pax_global_header00006660000000000000000000000064140450230120014501gustar00rootroot0000000000000052 comment=454e4778c26c49ea125deb9ce2b060330c68beb1 session_info-1.0.0/000077500000000000000000000000001404502301200141755ustar00rootroot00000000000000session_info-1.0.0/.gitattributes000066400000000000000000000000371404502301200170700ustar00rootroot00000000000000sinfo/_version.py export-subst session_info-1.0.0/.gitignore000066400000000000000000000002451404502301200161660ustar00rootroot00000000000000# single files/folder are searched for in any directory # paths are only from the top directory *.pyc build/ dist/ .cache/ .pytest_cache/ .coverage sinfo.egg-info/ session_info-1.0.0/CHANGELOG.md000066400000000000000000000041171404502301200160110ustar00rootroot00000000000000# Changelog All notable changes to this project will be documented in this file. The format is based on [Keep a Changelog](https://keepachangelog.com/en/1.0.0/). ## [1.0.0] - 2021-05-26 - This is a major release which breaks backwards compatibility since the package was renamed from `sinfo` to `session_info` and some defaults changed. ## Added - Clearer examples in the README. ## Changed - The package name was changed to `session_info` to make it more discoverable and self-explanatory. - The `sinfo` PyPI package will be kept around to avoid breaking old installs and you can downgrade to 0.3.2 if you want to use it without seeing this message. For the latest features and bug fixes, please install `session_info` instead. - The syntax for the default usage changed from `from sinfo import sinfo; sinfo()` to `import session_info; session_info.show()`. - The default is now to show the HTML version in notebooks and to not write a requirement text file unless explicitly asked for. - The CPU info is excluded by default. ## [0.3.4] - 2021-05-26 ### Added - Inform about package name change in the README. ## [0.3.3] - 2021-05-26 ### Added - Inform about package name change when called. ## [0.3.2] - 2021-05-06 ### Fixed - Do not print `None` for output fields that are not included in the output - Show only dependencies that are not already in the imported modules - Deal gracefully with version functions that do not return version strings - Use a single line for description in setup.py to avoid some installs breaking ## [0.3.1] - 2020-01-15 ### Changed - HTML defaults to False for output to show up on GitHub. ## [0.3.0] - 2019-12-14 ### Added - Support for tuples version attributes. - Print sinfo version by default. - Output as concealed HTML for notebooks. - Detect notebook name and prefix requirements file accordingly. - Docstring for requirements text file parameters. - Detect desirable behavior when parameters are set to `None`. - For html, jupyter, and requirements file. ### Changed - Parameters are no longer prefaced with `print_`. ### Fixed - Remove duplicate IPython output. session_info-1.0.0/CODE_OF_CONDUCT.md000066400000000000000000000076461404502301200170110ustar00rootroot00000000000000This is a compilation of what I consider the key points from the [Mozilla](https://www.mozilla.org/en-US/about/governance/policies/participation/), [Jupyter](https://github.com/jupyter/governance/blob/master/conduct/code_of_conduct.md), and [Ubuntu](https://www.ubuntu.com/community/code-of-conduct) community guidelines. This isn't an exhaustive list of things that you can't do. Rather, it aims to provide general guidelines for successfully conducting collaborative work in an exciting and fun environment. Please report unacceptable behavior by [opening a confidential issue](https://git.gutta.com/help/user/project/issues/confidential_issues.md). - **Be welcoming, friendly, and patient.** - We strive to be a community that welcomes and supports people of all backgrounds and identities. Remember that you can interact with people from all over the world and that you may be communicating with someone with a different primary language or cultural background. - **Be direct and respectful.** - We must be able to speak directly when we disagree and when we think we need to improve. We cannot withhold hard truths. Doing so respectfully is hard, doing so when others don’t seem to be listening is harder, and hearing such comments when one is the recipient can be even harder still. We need to be honest and direct, as well as respectful - **Understand and learn from disagreement and different perspectives.** - Our goal should not be to personally “win” every disagreement or argument. Value discussion and be open to ideas that make our own ideas better, while also making sure to speak up when and we disagree with an idea and explain why. Being unable to understand why someone holds a viewpoint doesn’t mean that they’re wrong. Don’t forget that it is human to err and blaming each other doesn’t get us anywhere, rather offer to help resolving issues and to help learn from mistakes. Have a dialectic, not a debate. Actual winning is when different perspectives make our work richer and stronger. - **Lead by example.** - By matching your actions with your words, you become a person others want to follow. Your actions influence others to behave and respond in ways that are valuable and appropriate for our organizational outcomes. Design your community and your work for inclusion. Hold yourself and others accountable for inclusive behaviors. - **Ask for help when unsure.** - Nobody is expected to be perfect. Asking questions early avoids many problems later, so questions are encouraged, though they may be directed to the appropriate forum. Those who are asked should be responsive and helpful. - **Give people the benefit of the doubt.** - Ask for clarification instead of jumping to conclusions. - **A simple apology can go a long way.** - It can often de-escalate a situation, and telling someone that you are sorry is an act of empathy that doesn’t automatically imply an admission of guilt. - **Be considerate in the words that you choose.** - Do not insult or put down other community members. Harassment and other exclusionary behavior are not acceptable. This includes, but is not limited to - Violent threats or violent language directed against another person - Discriminatory jokes and language - Posting sexually explicit or violent material - Posting (or threatening to post) other people's personally identifying information ("doxing") - Personal insults, especially those using racist or sexist terms - Unwelcome sexual attention - Advocating for, or encouraging, any of the above behavior - Repeated harassment of others. In general, if someone asks you to stop, then stop. This code of conduct is released under [CC BY-SA 3.0](https://creativecommons.org/licenses/by-sa/3.0/). session_info-1.0.0/CONTRIBUTING.md000066400000000000000000000005321404502301200164260ustar00rootroot00000000000000Thanks for your interest in helping to improve `session_info`! The best way to get in touch to discuss ideas is to [open a new issue](https://gitlab.com/joelostblom/session_info/issues). Remember to follow the [Code of conduct](https://gitlab.com/joelostblom/session_info/blob/master/CODE_OF_CONDUCT.md) when you participate in this project =) session_info-1.0.0/LICENSE000066400000000000000000000027501404502301200152060ustar00rootroot00000000000000BSD 3-Clause License Copyright (c) 2019, Joel Ostblom All rights reserved. Redistribution and use in source and binary forms, with or without modification, are permitted provided that the following conditions are met: * Redistributions of source code must retain the above copyright notice, this list of conditions and the following disclaimer. * Redistributions in binary form must reproduce the above copyright notice, this list of conditions and the following disclaimer in the documentation and/or other materials provided with the distribution. * Neither the name of the copyright holder nor the names of its contributors may be used to endorse or promote products derived from this software without specific prior written permission. THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. session_info-1.0.0/MANIFEST.in000066400000000000000000000000671404502301200157360ustar00rootroot00000000000000include versioneer.py include session_info/_version.py session_info-1.0.0/README.md000066400000000000000000000104251404502301200154560ustar00rootroot00000000000000# session_info `session_info` outputs version information for modules loaded in the current session, Python, the OS, and the CPU. It is designed as a minimum measure to increase reproducibility and provides similar information as `sessionInfo` and `devtools::session_info` in R. ## Motivation `session_info` is particularly useful when conducting exploratory data analysis in Jupyter notebooks. Listing the version numbers of all loaded modules after importing them is a simple way to ensure a minimum level of reproducibility while requiring little additional effort. This practice is useful both when revisiting notebooks and when sharing them with colleagues. `session_info` is meant to complement more robust practices such as frozen virtual environments, containers, and binder. ## Installation `session_info` can be installed via `pip install session_info`. It does not depend on a package manager to find version numbers since it fetches them from the module's version string. Its only dependency is `stdlib_list`, which is used to distinguish between standard library and third party modules. ## Usage `session_info` can be used from a script like so: ```python import math import natsort import pandas import session_info session_info.show() ``` Output: ``` Session information: ----- natsort 7.1.1 pandas 1.2.2 session_info 1.0.0 ----- IPython 7.23.0 jupyter_client 6.1.12 jupyter_core 4.7.1 ----- Python 3.9.2 | packaged by conda-forge | (default, Feb 21 2021, 05:02:46) [GCC 9.3.0] Linux-5.11.13-arch1-1-x86_64-with-glibc2.33 ----- Session information updated at 2021-05-06 09:59 ``` The default behavior is to only output modules not in the standard library, which is why the `math` module is omitted above (it can be included by specifying `std_lib=True`). To include not only the explicitly imported modules, but also any dependencies they import internally, specify `dependencies=True`. When `session_info` is invoked from a Jupyter Notebook, the output is concealed in `
` tags and will only show when clicked. Since this saves visual real estate, any modules imported indirectly as dependencies will be included by default and it looks like this:
Click to view session information 
-----
natsort             7.1.1
pandas              1.2.2
session_info        1.0.0
-----
Click to view modules imported as dependencies 
backcall            0.2.0
cython_runtime      NA
dateutil            2.8.1
decorator           5.0.7
ipykernel           5.5.3
ipython_genutils    0.2.0
jedi                0.18.0
numpy               1.20.2
parso               0.8.2
pexpect             4.8.0
pickleshare         0.7.5
prompt_toolkit      3.0.18
ptyprocess          0.7.0
pygments            2.8.1
pytz                2021.1
six                 1.15.0
storemagic          NA
tornado             6.1
traitlets           5.0.5
wcwidth             0.2.5
zmq                 22.0.3

-----
IPython             7.23.0
jupyter_client      6.1.12
jupyter_core        4.7.1
-----
Python 3.9.2 | packaged by conda-forge | (default, Feb 21 2021, 05:02:46) [GCC 9.3.0]
Linux-5.11.13-arch1-1-x86_64-with-glibc2.33
-----
Session information updated at 2021-05-06 09:59
If you prefer to show the session information without the HTML tags, you can use `session_info.show(html=False)` in the notebook to get the same output as in the first example above. `session_info` can also write the module dependencies to a `requirements.txt` file, which is compatible with `pip install -r /path/to/requirements.txt`. [View the docstring for complete parameter information](https://gitlab.com/joelostblom/session_info/-/blob/master/sinfo/main.py#L73-118). ## Background `session_info` started as minor modifications of `py_session`, and as it grew it became convenient to create a new package. `session_info` was built with the help of information provided in stackoverflow answers and existing similar packages, including - https://github.com/fbrundu/py_session - https://github.com/jrjohansson/version_information - https://github.com/rasbt/watermark - https://stackoverflow.com/a/4858123/2166823 - https://stackoverflow.com/a/40690954/2166823 - https://stackoverflow.com/a/52187331/2166823 session_info-1.0.0/session_info/000077500000000000000000000000001404502301200166735ustar00rootroot00000000000000session_info-1.0.0/session_info/__init__.py000066400000000000000000000001651404502301200210060ustar00rootroot00000000000000from .main import show from ._version import get_versions __version__ = get_versions()['version'] del get_versions session_info-1.0.0/session_info/_version.py000066400000000000000000000443461404502301200211040ustar00rootroot00000000000000 # This file helps to compute a version number in source trees obtained from # git-archive tarball (such as those provided by githubs download-from-tag # feature). Distribution tarballs (built by setup.py sdist) and build # directories (produced by setup.py build) will contain a much shorter file # that just contains the computed version number. # This file is released into the public domain. Generated by # versioneer-0.19 (https://github.com/python-versioneer/python-versioneer) """Git implementation of _version.py.""" import errno import os import re import subprocess import sys def get_keywords(): """Get the keywords needed to look up the version information.""" # these strings will be replaced by git during git-archive. # setup.py/versioneer.py will grep for the variable names, so they must # each be defined on a line of their own. _version.py will just call # get_keywords(). git_refnames = "$Format:%d$" git_full = "$Format:%H$" git_date = "$Format:%ci$" keywords = {"refnames": git_refnames, "full": git_full, "date": git_date} return keywords class VersioneerConfig: """Container for Versioneer configuration parameters.""" def get_config(): """Create, populate and return the VersioneerConfig() object.""" # these strings are filled in when 'setup.py versioneer' creates # _version.py cfg = VersioneerConfig() cfg.VCS = "git" cfg.style = "pep440" cfg.tag_prefix = "" cfg.parentdir_prefix = "" cfg.versionfile_source = "session_info/_version.py" cfg.verbose = False return cfg class NotThisMethod(Exception): """Exception raised if a method is not valid for the current scenario.""" LONG_VERSION_PY = {} HANDLERS = {} def register_vcs_handler(vcs, method): # decorator """Create decorator to mark a method as the handler of a VCS.""" def decorate(f): """Store f in HANDLERS[vcs][method].""" if vcs not in HANDLERS: HANDLERS[vcs] = {} HANDLERS[vcs][method] = f return f return decorate def run_command(commands, args, cwd=None, verbose=False, hide_stderr=False, env=None): """Call the given command(s).""" assert isinstance(commands, list) p = None for c in commands: try: dispcmd = str([c] + args) # remember shell=False, so use git.cmd on windows, not just git p = subprocess.Popen([c] + args, cwd=cwd, env=env, stdout=subprocess.PIPE, stderr=(subprocess.PIPE if hide_stderr else None)) break except EnvironmentError: e = sys.exc_info()[1] if e.errno == errno.ENOENT: continue if verbose: print("unable to run %s" % dispcmd) print(e) return None, None else: if verbose: print("unable to find command, tried %s" % (commands,)) return None, None stdout = p.communicate()[0].strip().decode() if p.returncode != 0: if verbose: print("unable to run %s (error)" % dispcmd) print("stdout was %s" % stdout) return None, p.returncode return stdout, p.returncode def versions_from_parentdir(parentdir_prefix, root, verbose): """Try to determine the version from the parent directory name. Source tarballs conventionally unpack into a directory that includes both the project name and a version string. We will also support searching up two directory levels for an appropriately named parent directory """ rootdirs = [] for i in range(3): dirname = os.path.basename(root) if dirname.startswith(parentdir_prefix): return {"version": dirname[len(parentdir_prefix):], "full-revisionid": None, "dirty": False, "error": None, "date": None} else: rootdirs.append(root) root = os.path.dirname(root) # up a level if verbose: print("Tried directories %s but none started with prefix %s" % (str(rootdirs), parentdir_prefix)) raise NotThisMethod("rootdir doesn't start with parentdir_prefix") @register_vcs_handler("git", "get_keywords") def git_get_keywords(versionfile_abs): """Extract version information from the given file.""" # the code embedded in _version.py can just fetch the value of these # keywords. When used from setup.py, we don't want to import _version.py, # so we do it with a regexp instead. This function is not used from # _version.py. keywords = {} try: f = open(versionfile_abs, "r") for line in f.readlines(): if line.strip().startswith("git_refnames ="): mo = re.search(r'=\s*"(.*)"', line) if mo: keywords["refnames"] = mo.group(1) if line.strip().startswith("git_full ="): mo = re.search(r'=\s*"(.*)"', line) if mo: keywords["full"] = mo.group(1) if line.strip().startswith("git_date ="): mo = re.search(r'=\s*"(.*)"', line) if mo: keywords["date"] = mo.group(1) f.close() except EnvironmentError: pass return keywords @register_vcs_handler("git", "keywords") def git_versions_from_keywords(keywords, tag_prefix, verbose): """Get version information from git keywords.""" if not keywords: raise NotThisMethod("no keywords at all, weird") date = keywords.get("date") if date is not None: # Use only the last line. Previous lines may contain GPG signature # information. date = date.splitlines()[-1] # git-2.2.0 added "%cI", which expands to an ISO-8601 -compliant # datestamp. However we prefer "%ci" (which expands to an "ISO-8601 # -like" string, which we must then edit to make compliant), because # it's been around since git-1.5.3, and it's too difficult to # discover which version we're using, or to work around using an # older one. date = date.strip().replace(" ", "T", 1).replace(" ", "", 1) refnames = keywords["refnames"].strip() if refnames.startswith("$Format"): if verbose: print("keywords are unexpanded, not using") raise NotThisMethod("unexpanded keywords, not a git-archive tarball") refs = set([r.strip() for r in refnames.strip("()").split(",")]) # starting in git-1.8.3, tags are listed as "tag: foo-1.0" instead of # just "foo-1.0". If we see a "tag: " prefix, prefer those. TAG = "tag: " tags = set([r[len(TAG):] for r in refs if r.startswith(TAG)]) if not tags: # Either we're using git < 1.8.3, or there really are no tags. We use # a heuristic: assume all version tags have a digit. The old git %d # expansion behaves like git log --decorate=short and strips out the # refs/heads/ and refs/tags/ prefixes that would let us distinguish # between branches and tags. By ignoring refnames without digits, we # filter out many common branch names like "release" and # "stabilization", as well as "HEAD" and "master". tags = set([r for r in refs if re.search(r'\d', r)]) if verbose: print("discarding '%s', no digits" % ",".join(refs - tags)) if verbose: print("likely tags: %s" % ",".join(sorted(tags))) for ref in sorted(tags): # sorting will prefer e.g. "2.0" over "2.0rc1" if ref.startswith(tag_prefix): r = ref[len(tag_prefix):] if verbose: print("picking %s" % r) return {"version": r, "full-revisionid": keywords["full"].strip(), "dirty": False, "error": None, "date": date} # no suitable tags, so version is "0+unknown", but full hex is still there if verbose: print("no suitable tags, using unknown + full revision id") return {"version": "0+unknown", "full-revisionid": keywords["full"].strip(), "dirty": False, "error": "no suitable tags", "date": None} @register_vcs_handler("git", "pieces_from_vcs") def git_pieces_from_vcs(tag_prefix, root, verbose, run_command=run_command): """Get version from 'git describe' in the root of the source tree. This only gets called if the git-archive 'subst' keywords were *not* expanded, and _version.py hasn't already been rewritten with a short version string, meaning we're inside a checked out source tree. """ GITS = ["git"] if sys.platform == "win32": GITS = ["git.cmd", "git.exe"] out, rc = run_command(GITS, ["rev-parse", "--git-dir"], cwd=root, hide_stderr=True) if rc != 0: if verbose: print("Directory %s not under git control" % root) raise NotThisMethod("'git rev-parse --git-dir' returned error") # if there is a tag matching tag_prefix, this yields TAG-NUM-gHEX[-dirty] # if there isn't one, this yields HEX[-dirty] (no NUM) describe_out, rc = run_command(GITS, ["describe", "--tags", "--dirty", "--always", "--long", "--match", "%s*" % tag_prefix], cwd=root) # --long was added in git-1.5.5 if describe_out is None: raise NotThisMethod("'git describe' failed") describe_out = describe_out.strip() full_out, rc = run_command(GITS, ["rev-parse", "HEAD"], cwd=root) if full_out is None: raise NotThisMethod("'git rev-parse' failed") full_out = full_out.strip() pieces = {} pieces["long"] = full_out pieces["short"] = full_out[:7] # maybe improved later pieces["error"] = None # parse describe_out. It will be like TAG-NUM-gHEX[-dirty] or HEX[-dirty] # TAG might have hyphens. git_describe = describe_out # look for -dirty suffix dirty = git_describe.endswith("-dirty") pieces["dirty"] = dirty if dirty: git_describe = git_describe[:git_describe.rindex("-dirty")] # now we have TAG-NUM-gHEX or HEX if "-" in git_describe: # TAG-NUM-gHEX mo = re.search(r'^(.+)-(\d+)-g([0-9a-f]+)$', git_describe) if not mo: # unparseable. Maybe git-describe is misbehaving? pieces["error"] = ("unable to parse git-describe output: '%s'" % describe_out) return pieces # tag full_tag = mo.group(1) if not full_tag.startswith(tag_prefix): if verbose: fmt = "tag '%s' doesn't start with prefix '%s'" print(fmt % (full_tag, tag_prefix)) pieces["error"] = ("tag '%s' doesn't start with prefix '%s'" % (full_tag, tag_prefix)) return pieces pieces["closest-tag"] = full_tag[len(tag_prefix):] # distance: number of commits since tag pieces["distance"] = int(mo.group(2)) # commit: short hex revision ID pieces["short"] = mo.group(3) else: # HEX: no tags pieces["closest-tag"] = None count_out, rc = run_command(GITS, ["rev-list", "HEAD", "--count"], cwd=root) pieces["distance"] = int(count_out) # total number of commits # commit date: see ISO-8601 comment in git_versions_from_keywords() date = run_command(GITS, ["show", "-s", "--format=%ci", "HEAD"], cwd=root)[0].strip() # Use only the last line. Previous lines may contain GPG signature # information. date = date.splitlines()[-1] pieces["date"] = date.strip().replace(" ", "T", 1).replace(" ", "", 1) return pieces def plus_or_dot(pieces): """Return a + if we don't already have one, else return a .""" if "+" in pieces.get("closest-tag", ""): return "." return "+" def render_pep440(pieces): """Build up version string, with post-release "local version identifier". Our goal: TAG[+DISTANCE.gHEX[.dirty]] . Note that if you get a tagged build and then dirty it, you'll get TAG+0.gHEX.dirty Exceptions: 1: no tags. git_describe was just HEX. 0+untagged.DISTANCE.gHEX[.dirty] """ if pieces["closest-tag"]: rendered = pieces["closest-tag"] if pieces["distance"] or pieces["dirty"]: rendered += plus_or_dot(pieces) rendered += "%d.g%s" % (pieces["distance"], pieces["short"]) if pieces["dirty"]: rendered += ".dirty" else: # exception #1 rendered = "0+untagged.%d.g%s" % (pieces["distance"], pieces["short"]) if pieces["dirty"]: rendered += ".dirty" return rendered def render_pep440_pre(pieces): """TAG[.post0.devDISTANCE] -- No -dirty. Exceptions: 1: no tags. 0.post0.devDISTANCE """ if pieces["closest-tag"]: rendered = pieces["closest-tag"] if pieces["distance"]: rendered += ".post0.dev%d" % pieces["distance"] else: # exception #1 rendered = "0.post0.dev%d" % pieces["distance"] return rendered def render_pep440_post(pieces): """TAG[.postDISTANCE[.dev0]+gHEX] . The ".dev0" means dirty. Note that .dev0 sorts backwards (a dirty tree will appear "older" than the corresponding clean one), but you shouldn't be releasing software with -dirty anyways. Exceptions: 1: no tags. 0.postDISTANCE[.dev0] """ if pieces["closest-tag"]: rendered = pieces["closest-tag"] if pieces["distance"] or pieces["dirty"]: rendered += ".post%d" % pieces["distance"] if pieces["dirty"]: rendered += ".dev0" rendered += plus_or_dot(pieces) rendered += "g%s" % pieces["short"] else: # exception #1 rendered = "0.post%d" % pieces["distance"] if pieces["dirty"]: rendered += ".dev0" rendered += "+g%s" % pieces["short"] return rendered def render_pep440_old(pieces): """TAG[.postDISTANCE[.dev0]] . The ".dev0" means dirty. Exceptions: 1: no tags. 0.postDISTANCE[.dev0] """ if pieces["closest-tag"]: rendered = pieces["closest-tag"] if pieces["distance"] or pieces["dirty"]: rendered += ".post%d" % pieces["distance"] if pieces["dirty"]: rendered += ".dev0" else: # exception #1 rendered = "0.post%d" % pieces["distance"] if pieces["dirty"]: rendered += ".dev0" return rendered def render_git_describe(pieces): """TAG[-DISTANCE-gHEX][-dirty]. Like 'git describe --tags --dirty --always'. Exceptions: 1: no tags. HEX[-dirty] (note: no 'g' prefix) """ if pieces["closest-tag"]: rendered = pieces["closest-tag"] if pieces["distance"]: rendered += "-%d-g%s" % (pieces["distance"], pieces["short"]) else: # exception #1 rendered = pieces["short"] if pieces["dirty"]: rendered += "-dirty" return rendered def render_git_describe_long(pieces): """TAG-DISTANCE-gHEX[-dirty]. Like 'git describe --tags --dirty --always -long'. The distance/hash is unconditional. Exceptions: 1: no tags. HEX[-dirty] (note: no 'g' prefix) """ if pieces["closest-tag"]: rendered = pieces["closest-tag"] rendered += "-%d-g%s" % (pieces["distance"], pieces["short"]) else: # exception #1 rendered = pieces["short"] if pieces["dirty"]: rendered += "-dirty" return rendered def render(pieces, style): """Render the given version pieces into the requested style.""" if pieces["error"]: return {"version": "unknown", "full-revisionid": pieces.get("long"), "dirty": None, "error": pieces["error"], "date": None} if not style or style == "default": style = "pep440" # the default if style == "pep440": rendered = render_pep440(pieces) elif style == "pep440-pre": rendered = render_pep440_pre(pieces) elif style == "pep440-post": rendered = render_pep440_post(pieces) elif style == "pep440-old": rendered = render_pep440_old(pieces) elif style == "git-describe": rendered = render_git_describe(pieces) elif style == "git-describe-long": rendered = render_git_describe_long(pieces) else: raise ValueError("unknown style '%s'" % style) return {"version": rendered, "full-revisionid": pieces["long"], "dirty": pieces["dirty"], "error": None, "date": pieces.get("date")} def get_versions(): """Get version information or return default if unable to do so.""" # I am in _version.py, which lives at ROOT/VERSIONFILE_SOURCE. If we have # __file__, we can work backwards from there to the root. Some # py2exe/bbfreeze/non-CPython implementations don't do __file__, in which # case we can only use expanded keywords. cfg = get_config() verbose = cfg.verbose try: return git_versions_from_keywords(get_keywords(), cfg.tag_prefix, verbose) except NotThisMethod: pass try: root = os.path.realpath(__file__) # versionfile_source is the relative path from the top of the source # tree (where the .git directory might live) to this file. Invert # this to find the root from __file__. for i in cfg.versionfile_source.split('/'): root = os.path.dirname(root) except NameError: return {"version": "0+unknown", "full-revisionid": None, "dirty": None, "error": "unable to find root of source tree", "date": None} try: pieces = git_pieces_from_vcs(cfg.tag_prefix, root, verbose) return render(pieces, cfg.style) except NotThisMethod: pass try: if cfg.parentdir_prefix: return versions_from_parentdir(cfg.parentdir_prefix, root, verbose) except NotThisMethod: pass return {"version": "0+unknown", "full-revisionid": None, "dirty": None, "error": "unable to compute version", "date": None} session_info-1.0.0/session_info/main.py000066400000000000000000000326201404502301200201740ustar00rootroot00000000000000''' session_info finds and prints version information for loaded modules in the current session, Python, and the OS. ''' import sys import types import platform import inspect from datetime import datetime from importlib import import_module from inspect import cleandoc from multiprocessing import cpu_count from pathlib import Path from stdlib_list import stdlib_list def _imports(environ): '''Find modules in an environment.''' for name, val in environ: # If the module was directly imported if isinstance(val, types.ModuleType): yield val.__name__ # If something was imported from the module else: try: yield val.__module__.split('.')[0] except AttributeError: pass def _find_version(mod_version_attr): '''Find the version number of a module''' if (isinstance(mod_version_attr, str) or isinstance(mod_version_attr, int)): return mod_version_attr elif isinstance(mod_version_attr, tuple): joined_tuple = '.'.join([str(num) for num in mod_version_attr]) return joined_tuple elif callable(mod_version_attr): try: return mod_version_attr() # A module might have a function that does something else than return # the version number altough it is named "version" or similar, e.g. # https://gitlab.com/joelostblom/session_info/-/issues/8. In these cases it # will likely fail to call without arguments, we're raising the same # type of error as in the parent try/except clause to continue looking # for more possible version strings. except Exception: raise AttributeError else: # print(f'Does not support module version of type {type(mod_ver_attr)}') return 'NA' # From https://stackoverflow.com/a/52187331/2166823 # Slight modifications added def _notebook_basename(): """Returns the absolute path of the Notebook or None if it cannot be determined NOTE: works only when the security is token-based or there is also no password """ import ipykernel import json import urllib from notebook import notebookapp connection_file = Path(ipykernel.get_connection_file()).name kernel_id = connection_file.split('-', 1)[1].split('.')[0] for srv in notebookapp.list_running_servers(): if srv['token'] == '' and not srv['password']: # No token and no password req = urllib.request.urlopen(srv['url']+'api/sessions') else: req = urllib.request.urlopen(srv['url']+'api/sessions?token='+srv['token']) sessions = json.load(req) for sess in sessions: if sess['kernel']['id'] == kernel_id: return Path(sess['notebook']['path']).stem return None def _clean_modules(modules, private, excludes): # Keep module basename only. Filter duplicates and excluded modules. if private: clean_modules = set(module.split('.')[0] for module in modules if module.split('.')[0] not in excludes) else: # Also filter private modules clean_modules = set(module.split('.')[0] for module in modules if module.split('.')[0] not in excludes and not module.startswith('_')) return clean_modules def show(na=True, os=True, cpu=False, jupyter=None, dependencies=None, std_lib=False, private=False, write_req_file=False, req_file_name=None, html=None, excludes=['builtins', 'stdlib_list']): ''' Show version information for loaded modules in the current session, Python, and the OS. Parameters ---------- na : bool Show module name even when no version number is found. os : bool Show OS information. cpu : bool Show number of logical CPU cores and info string (if available). jupyter : bool Show information about the jupyter environment. If `None`, output jupyter info only if inside a Jupyter notebook. dependencies : bool Show information about modules imported by the Python interpreter on startup and depency modules imported via other modules. If `None`, dependency modules will be included in the HTML output under a
tag, and excluded from the printed output. Setting `na` to `False` could be helpful to reduce verboseness. std_lib : bool Show information for modules imported from the standard library. Tries to detect the Python version to compare with the corresponding standard libarary, falls back to Python 3.7 if the version cannot be detected. private : bool Show information for private modules. write_req_file: bool Create a pip-compatible text file that lists all the module versions. If `None`, write dependency files for Jupyter notebooks only. If the `notebook` module is installed, `session_info` can automatically find the notebook name use it as a prefix for the requirments file. Otherwise it falls back to `session_info-requirements.txt`. This only writes explicitly imported modules. req_file_name : str Change the name of the requirements file. html: bool Format the output as HTML and collapse it in a
tag. If `None`, HTML will be used only if a Jupyter notebook environment is detected. Note that this will not be visible in notebooks shared on GitHub since they seemingly do not support the
tag. Requires IPython. excludes : list Do not show version information for these modules. ''' # Exclude std lib packages if not std_lib: try: std_modules = stdlib_list(version=platform.python_version()[:-2]) except ValueError: # Use 3.7 if the Python version cannot be found std_modules = stdlib_list('3.7') excludes = excludes + std_modules # Include jupyter info in_notebook = 'jupyter_core' in sys.modules.keys() if in_notebook: if html is None: html = True if jupyter or (jupyter is None and in_notebook): jupyter = True jup_mod_names = ['IPython', 'jupyter_client', 'jupyter_core', 'jupyterlab', 'notebook'] jup_modules = [] for jup_mod_name in jup_mod_names: try: jup_modules.append(import_module(jup_mod_name)) except ModuleNotFoundError: pass # The length of `'jupyter_client'` is 14 # The spaces are added to create uniform whitespace in the output # f-strings, which is needed to clean them with inspect.cleandoc jup_mod_and_ver = [f' {module.__name__:14}\t{module.__version__}' for module in jup_modules] output_jupyter = '\n'.join(jup_mod_and_ver) else: output_jupyter = None # Get `globals()` from the enviroment where the function is executed caller_globals = dict( inspect.getmembers(inspect.stack()[1][0]))["f_globals"] # Find imported modules in the global namespace imported_modules = _clean_modules(set(_imports(caller_globals.items())), private, excludes) # Wether to include dependency module not explicitly imported all_modules = {'imported': imported_modules} if dependencies is not False: # Default with HTML is to include deps if html or dependencies: dependencies = True # HTML default, used later for output strings sys_modules = _clean_modules(set(sys.modules.keys()), private, excludes) depend_modules = sys_modules.difference(imported_modules) if depend_modules: all_modules['depend'] = depend_modules else: dependencies = False output_modules = {} for mod_type in all_modules: clean_modules = all_modules[mod_type] # Don't duplicate jupyter module output if jupyter or in_notebook: for jup_module in jup_modules: if jup_module.__name__ in clean_modules: clean_modules.remove(jup_module.__name__) # Find version number. Return NA if a version string can't be found. # This section is modified from the `py_session` package mod_and_ver = [] mod_names = [] mod_versions = [] for mod_name in clean_modules: mod_names.append(mod_name) mod = sys.modules[mod_name] # Since modules use different attribute names to store version info, # try the most common ones. try: mod_version = _find_version(mod.__version__) except AttributeError: try: mod_version = _find_version(mod.version) except AttributeError: try: mod_version = _find_version(mod.VERSION) except AttributeError: mod_version = 'NA' # print(f'Cannot find a version attribute for {mod}.') mod_versions.append(mod_version) max_name_len = max([len(mod_name) for mod_name in mod_names]) mod_and_ver = [f'{mod_name:{max_name_len}}\t{mod_version}' for mod_name, mod_version in zip(mod_names, mod_versions)] if not na: mod_and_ver = [x for x in mod_and_ver if not x[-2:] == 'NA'] mod_and_ver = sorted(mod_and_ver) output_modules[mod_type] = '\n '.join(mod_and_ver) # Write requirements file for notebooks only by default if write_req_file or (write_req_file is None and in_notebook): if req_file_name is None: # Only import notebook libraries if we are in the notebook # Otherwise, running this multiple times would set `in_notebook=True` if in_notebook: try: req_file_name = f'{_notebook_basename()}-requirements.txt' # If the notebook name cannot be found for, we want to fall # back to the default name. Usually this happens because the # notebook module is not found, but this is already mentioned # in the docstring so we're not differentiating between that # and other exceptions here. except Exception: req_file_name = 'session_info-requirements.txt' else: req_file_name = 'session_info-requirements.txt' # For NA modules, just include the latest, so no version number. mods_na_removed = [mod_ver.replace('\tNA', '') for mod_ver in output_modules['imported'].split('\n')] if jupyter: mods_req_file = mods_na_removed + jup_mod_and_ver else: mods_req_file = mods_na_removed clean_mods_req_file = [mod_ver.replace(' ', '').replace('\t', '==') for mod_ver in mods_req_file] with open(req_file_name, 'w') as f: for mod_to_req in clean_mods_req_file: f.write('{}\n'.format(mod_to_req)) # Sys info sys_output = 'Python ' + sys.version.replace('\n', '') os_output = platform.platform() if os else '' if cpu: if platform.processor() != '': cpu_output = f'{cpu_count()} logical CPU cores, {platform.processor()}' else: cpu_output = f'{cpu_count()} logical CPU cores' else: cpu_output = '' date_output = 'Session information updated at {}'.format( datetime.now().strftime('%Y-%m-%d %H:%M')) # Output # For proper formatting and exclusion of `-----` when `jupyter=False`. nl = '\n' output_jup_str = ('' if output_jupyter is None else f'{nl} -----{nl}{output_jupyter}') if html: from IPython.display import HTML if dependencies: # Must be dedented to line up with the returned HTML. # Otherwise `cleandoc()` does not work. output_depend_str = f""" -----
Click to view modules imported as dependencies 
            {output_modules['depend']}
            
"""
        else:
            output_depend_str = ''
        return HTML(cleandoc(f"""
            

            Click to view session information
            
            -----
            {output_modules['imported']}{output_depend_str}{output_jup_str}
            -----
            {sys_output}
            {os_output}
            {cpu_output}
            -----
            {date_output}
            

            
""").replace('\n\n', '\n'))  # Clean empty output fields
    else:
        if dependencies:
            # Must be dedented to line up with the returned HTML.
            # Otherwise `cleandoc()` does not work.
            output_depend_str = f"""
            -----
            {output_modules['depend']}"""
        else:
            output_depend_str = ''
        print(cleandoc(f"""
            -----
            {output_modules['imported']}{output_depend_str}{output_jup_str}
            -----
            {sys_output}
            {os_output}
            {cpu_output}
            -----
            {date_output}""").replace('\n\n', '\n'))  # Clean empty output fields
session_info-1.0.0/setup.cfg000066400000000000000000000002411404502301200160130ustar00rootroot00000000000000[versioneer]
VCS = git
style = pep440
versionfile_source = session_info/_version.py
versionfile_build = session_info/_version.py
tag_prefix =
parentdir_prefix =
session_info-1.0.0/setup.py000066400000000000000000000017061404502301200157130ustar00rootroot00000000000000from os import path
from setuptools import setup, find_packages
import versioneer


# Read the contents of the README file
this_directory = path.abspath(path.dirname(__file__))
with open(path.join(this_directory, 'README.md'), encoding='utf-8') as f:
    long_description = f.read()

setup(
    name='session_info',
    url='https://gitlab.com/joelostblom/session_info',
    author='Joel Ostblom',
    author_email='joel.ostblom@protonmail.com',
    packages=find_packages(),
    install_requires=['stdlib_list'],
    python_requires='>=3.6',
    # Automatic version number
    version=versioneer.get_version(),
    cmdclass=versioneer.get_cmdclass(),
    license='BSD-3',
    description='session_info outputs version information for modules loaded in the current session, Python, and the OS.',
    # Include readme in markdown format, GFM markdown style by default
    long_description=open('README.md').read(),
    long_description_content_type='text/markdown'
)
session_info-1.0.0/versioneer.py000066400000000000000000002110001404502301200167220ustar00rootroot00000000000000
# Version: 0.19

"""The Versioneer - like a rocketeer, but for versions.

The Versioneer
==============

* like a rocketeer, but for versions!
* https://github.com/python-versioneer/python-versioneer
* Brian Warner
* License: Public Domain
* Compatible with: Python 3.6, 3.7, 3.8, 3.9 and pypy3
* [![Latest Version][pypi-image]][pypi-url]
* [![Build Status][travis-image]][travis-url]

This is a tool for managing a recorded version number in distutils-based
python projects. The goal is to remove the tedious and error-prone "update
the embedded version string" step from your release process. Making a new
release should be as easy as recording a new tag in your version-control
system, and maybe making new tarballs.


## Quick Install

* `pip install versioneer` to somewhere in your $PATH
* add a `[versioneer]` section to your setup.cfg (see [Install](INSTALL.md))
* run `versioneer install` in your source tree, commit the results
* Verify version information with `python setup.py version`

## Version Identifiers

Source trees come from a variety of places:

* a version-control system checkout (mostly used by developers)
* a nightly tarball, produced by build automation
* a snapshot tarball, produced by a web-based VCS browser, like github's
  "tarball from tag" feature
* a release tarball, produced by "setup.py sdist", distributed through PyPI

Within each source tree, the version identifier (either a string or a number,
this tool is format-agnostic) can come from a variety of places:

* ask the VCS tool itself, e.g. "git describe" (for checkouts), which knows
  about recent "tags" and an absolute revision-id
* the name of the directory into which the tarball was unpacked
* an expanded VCS keyword ($Id$, etc)
* a `_version.py` created by some earlier build step

For released software, the version identifier is closely related to a VCS
tag. Some projects use tag names that include more than just the version
string (e.g. "myproject-1.2" instead of just "1.2"), in which case the tool
needs to strip the tag prefix to extract the version identifier. For
unreleased software (between tags), the version identifier should provide
enough information to help developers recreate the same tree, while also
giving them an idea of roughly how old the tree is (after version 1.2, before
version 1.3). Many VCS systems can report a description that captures this,
for example `git describe --tags --dirty --always` reports things like
"0.7-1-g574ab98-dirty" to indicate that the checkout is one revision past the
0.7 tag, has a unique revision id of "574ab98", and is "dirty" (it has
uncommitted changes).

The version identifier is used for multiple purposes:

* to allow the module to self-identify its version: `myproject.__version__`
* to choose a name and prefix for a 'setup.py sdist' tarball

## Theory of Operation

Versioneer works by adding a special `_version.py` file into your source
tree, where your `__init__.py` can import it. This `_version.py` knows how to
dynamically ask the VCS tool for version information at import time.

`_version.py` also contains `$Revision$` markers, and the installation
process marks `_version.py` to have this marker rewritten with a tag name
during the `git archive` command. As a result, generated tarballs will
contain enough information to get the proper version.

To allow `setup.py` to compute a version too, a `versioneer.py` is added to
the top level of your source tree, next to `setup.py` and the `setup.cfg`
that configures it. This overrides several distutils/setuptools commands to
compute the version when invoked, and changes `setup.py build` and `setup.py
sdist` to replace `_version.py` with a small static file that contains just
the generated version data.

## Installation

See [INSTALL.md](./INSTALL.md) for detailed installation instructions.

## Version-String Flavors

Code which uses Versioneer can learn about its version string at runtime by
importing `_version` from your main `__init__.py` file and running the
`get_versions()` function. From the "outside" (e.g. in `setup.py`), you can
import the top-level `versioneer.py` and run `get_versions()`.

Both functions return a dictionary with different flavors of version
information:

* `['version']`: A condensed version string, rendered using the selected
  style. This is the most commonly used value for the project's version
  string. The default "pep440" style yields strings like `0.11`,
  `0.11+2.g1076c97`, or `0.11+2.g1076c97.dirty`. See the "Styles" section
  below for alternative styles.

* `['full-revisionid']`: detailed revision identifier. For Git, this is the
  full SHA1 commit id, e.g. "1076c978a8d3cfc70f408fe5974aa6c092c949ac".

* `['date']`: Date and time of the latest `HEAD` commit. For Git, it is the
  commit date in ISO 8601 format. This will be None if the date is not
  available.

* `['dirty']`: a boolean, True if the tree has uncommitted changes. Note that
  this is only accurate if run in a VCS checkout, otherwise it is likely to
  be False or None

* `['error']`: if the version string could not be computed, this will be set
  to a string describing the problem, otherwise it will be None. It may be
  useful to throw an exception in setup.py if this is set, to avoid e.g.
  creating tarballs with a version string of "unknown".

Some variants are more useful than others. Including `full-revisionid` in a
bug report should allow developers to reconstruct the exact code being tested
(or indicate the presence of local changes that should be shared with the
developers). `version` is suitable for display in an "about" box or a CLI
`--version` output: it can be easily compared against release notes and lists
of bugs fixed in various releases.

The installer adds the following text to your `__init__.py` to place a basic
version in `YOURPROJECT.__version__`:

    from ._version import get_versions
    __version__ = get_versions()['version']
    del get_versions

## Styles

The setup.cfg `style=` configuration controls how the VCS information is
rendered into a version string.

The default style, "pep440", produces a PEP440-compliant string, equal to the
un-prefixed tag name for actual releases, and containing an additional "local
version" section with more detail for in-between builds. For Git, this is
TAG[+DISTANCE.gHEX[.dirty]] , using information from `git describe --tags
--dirty --always`. For example "0.11+2.g1076c97.dirty" indicates that the
tree is like the "1076c97" commit but has uncommitted changes (".dirty"), and
that this commit is two revisions ("+2") beyond the "0.11" tag. For released
software (exactly equal to a known tag), the identifier will only contain the
stripped tag, e.g. "0.11".

Other styles are available. See [details.md](details.md) in the Versioneer
source tree for descriptions.

## Debugging

Versioneer tries to avoid fatal errors: if something goes wrong, it will tend
to return a version of "0+unknown". To investigate the problem, run `setup.py
version`, which will run the version-lookup code in a verbose mode, and will
display the full contents of `get_versions()` (including the `error` string,
which may help identify what went wrong).

## Known Limitations

Some situations are known to cause problems for Versioneer. This details the
most significant ones. More can be found on Github
[issues page](https://github.com/python-versioneer/python-versioneer/issues).

### Subprojects

Versioneer has limited support for source trees in which `setup.py` is not in
the root directory (e.g. `setup.py` and `.git/` are *not* siblings). The are
two common reasons why `setup.py` might not be in the root:

* Source trees which contain multiple subprojects, such as
  [Buildbot](https://github.com/buildbot/buildbot), which contains both
  "master" and "slave" subprojects, each with their own `setup.py`,
  `setup.cfg`, and `tox.ini`. Projects like these produce multiple PyPI
  distributions (and upload multiple independently-installable tarballs).
* Source trees whose main purpose is to contain a C library, but which also
  provide bindings to Python (and perhaps other languages) in subdirectories.

Versioneer will look for `.git` in parent directories, and most operations
should get the right version string. However `pip` and `setuptools` have bugs
and implementation details which frequently cause `pip install .` from a
subproject directory to fail to find a correct version string (so it usually
defaults to `0+unknown`).

`pip install --editable .` should work correctly. `setup.py install` might
work too.

Pip-8.1.1 is known to have this problem, but hopefully it will get fixed in
some later version.

[Bug #38](https://github.com/python-versioneer/python-versioneer/issues/38) is tracking
this issue. The discussion in
[PR #61](https://github.com/python-versioneer/python-versioneer/pull/61) describes the
issue from the Versioneer side in more detail.
[pip PR#3176](https://github.com/pypa/pip/pull/3176) and
[pip PR#3615](https://github.com/pypa/pip/pull/3615) contain work to improve
pip to let Versioneer work correctly.

Versioneer-0.16 and earlier only looked for a `.git` directory next to the
`setup.cfg`, so subprojects were completely unsupported with those releases.

### Editable installs with setuptools <= 18.5

`setup.py develop` and `pip install --editable .` allow you to install a
project into a virtualenv once, then continue editing the source code (and
test) without re-installing after every change.

"Entry-point scripts" (`setup(entry_points={"console_scripts": ..})`) are a
convenient way to specify executable scripts that should be installed along
with the python package.

These both work as expected when using modern setuptools. When using
setuptools-18.5 or earlier, however, certain operations will cause
`pkg_resources.DistributionNotFound` errors when running the entrypoint
script, which must be resolved by re-installing the package. This happens
when the install happens with one version, then the egg_info data is
regenerated while a different version is checked out. Many setup.py commands
cause egg_info to be rebuilt (including `sdist`, `wheel`, and installing into
a different virtualenv), so this can be surprising.

[Bug #83](https://github.com/python-versioneer/python-versioneer/issues/83) describes
this one, but upgrading to a newer version of setuptools should probably
resolve it.


## Updating Versioneer

To upgrade your project to a new release of Versioneer, do the following:

* install the new Versioneer (`pip install -U versioneer` or equivalent)
* edit `setup.cfg`, if necessary, to include any new configuration settings
  indicated by the release notes. See [UPGRADING](./UPGRADING.md) for details.
* re-run `versioneer install` in your source tree, to replace
  `SRC/_version.py`
* commit any changed files

## Future Directions

This tool is designed to make it easily extended to other version-control
systems: all VCS-specific components are in separate directories like
src/git/ . The top-level `versioneer.py` script is assembled from these
components by running make-versioneer.py . In the future, make-versioneer.py
will take a VCS name as an argument, and will construct a version of
`versioneer.py` that is specific to the given VCS. It might also take the
configuration arguments that are currently provided manually during
installation by editing setup.py . Alternatively, it might go the other
direction and include code from all supported VCS systems, reducing the
number of intermediate scripts.

## Similar projects

* [setuptools_scm](https://github.com/pypa/setuptools_scm/) - a non-vendored build-time
  dependency
* [minver](https://github.com/jbweston/miniver) - a lightweight reimplementation of
  versioneer

## License

To make Versioneer easier to embed, all its code is dedicated to the public
domain. The `_version.py` that it creates is also in the public domain.
Specifically, both are released under the Creative Commons "Public Domain
Dedication" license (CC0-1.0), as described in
https://creativecommons.org/publicdomain/zero/1.0/ .

[pypi-image]: https://img.shields.io/pypi/v/versioneer.svg
[pypi-url]: https://pypi.python.org/pypi/versioneer/
[travis-image]:
https://img.shields.io/travis/com/python-versioneer/python-versioneer.svg
[travis-url]: https://travis-ci.com/github/python-versioneer/python-versioneer

"""

import configparser
import errno
import json
import os
import re
import subprocess
import sys


class VersioneerConfig:
    """Container for Versioneer configuration parameters."""


def get_root():
    """Get the project root directory.

    We require that all commands are run from the project root, i.e. the
    directory that contains setup.py, setup.cfg, and versioneer.py .
    """
    root = os.path.realpath(os.path.abspath(os.getcwd()))
    setup_py = os.path.join(root, "setup.py")
    versioneer_py = os.path.join(root, "versioneer.py")
    if not (os.path.exists(setup_py) or os.path.exists(versioneer_py)):
        # allow 'python path/to/setup.py COMMAND'
        root = os.path.dirname(os.path.realpath(os.path.abspath(sys.argv[0])))
        setup_py = os.path.join(root, "setup.py")
        versioneer_py = os.path.join(root, "versioneer.py")
    if not (os.path.exists(setup_py) or os.path.exists(versioneer_py)):
        err = ("Versioneer was unable to run the project root directory. "
               "Versioneer requires setup.py to be executed from "
               "its immediate directory (like 'python setup.py COMMAND'), "
               "or in a way that lets it use sys.argv[0] to find the root "
               "(like 'python path/to/setup.py COMMAND').")
        raise VersioneerBadRootError(err)
    try:
        # Certain runtime workflows (setup.py install/develop in a setuptools
        # tree) execute all dependencies in a single python process, so
        # "versioneer" may be imported multiple times, and python's shared
        # module-import table will cache the first one. So we can't use
        # os.path.dirname(__file__), as that will find whichever
        # versioneer.py was first imported, even in later projects.
        me = os.path.realpath(os.path.abspath(__file__))
        me_dir = os.path.normcase(os.path.splitext(me)[0])
        vsr_dir = os.path.normcase(os.path.splitext(versioneer_py)[0])
        if me_dir != vsr_dir:
            print("Warning: build in %s is using versioneer.py from %s"
                  % (os.path.dirname(me), versioneer_py))
    except NameError:
        pass
    return root


def get_config_from_root(root):
    """Read the project setup.cfg file to determine Versioneer config."""
    # This might raise EnvironmentError (if setup.cfg is missing), or
    # configparser.NoSectionError (if it lacks a [versioneer] section), or
    # configparser.NoOptionError (if it lacks "VCS="). See the docstring at
    # the top of versioneer.py for instructions on writing your setup.cfg .
    setup_cfg = os.path.join(root, "setup.cfg")
    parser = configparser.ConfigParser()
    with open(setup_cfg, "r") as f:
        parser.read_file(f)
    VCS = parser.get("versioneer", "VCS")  # mandatory

    def get(parser, name):
        if parser.has_option("versioneer", name):
            return parser.get("versioneer", name)
        return None
    cfg = VersioneerConfig()
    cfg.VCS = VCS
    cfg.style = get(parser, "style") or ""
    cfg.versionfile_source = get(parser, "versionfile_source")
    cfg.versionfile_build = get(parser, "versionfile_build")
    cfg.tag_prefix = get(parser, "tag_prefix")
    if cfg.tag_prefix in ("''", '""'):
        cfg.tag_prefix = ""
    cfg.parentdir_prefix = get(parser, "parentdir_prefix")
    cfg.verbose = get(parser, "verbose")
    return cfg


class NotThisMethod(Exception):
    """Exception raised if a method is not valid for the current scenario."""


# these dictionaries contain VCS-specific tools
LONG_VERSION_PY = {}
HANDLERS = {}


def register_vcs_handler(vcs, method):  # decorator
    """Create decorator to mark a method as the handler of a VCS."""
    def decorate(f):
        """Store f in HANDLERS[vcs][method]."""
        if vcs not in HANDLERS:
            HANDLERS[vcs] = {}
        HANDLERS[vcs][method] = f
        return f
    return decorate


def run_command(commands, args, cwd=None, verbose=False, hide_stderr=False,
                env=None):
    """Call the given command(s)."""
    assert isinstance(commands, list)
    p = None
    for c in commands:
        try:
            dispcmd = str([c] + args)
            # remember shell=False, so use git.cmd on windows, not just git
            p = subprocess.Popen([c] + args, cwd=cwd, env=env,
                                 stdout=subprocess.PIPE,
                                 stderr=(subprocess.PIPE if hide_stderr
                                         else None))
            break
        except EnvironmentError:
            e = sys.exc_info()[1]
            if e.errno == errno.ENOENT:
                continue
            if verbose:
                print("unable to run %s" % dispcmd)
                print(e)
            return None, None
    else:
        if verbose:
            print("unable to find command, tried %s" % (commands,))
        return None, None
    stdout = p.communicate()[0].strip().decode()
    if p.returncode != 0:
        if verbose:
            print("unable to run %s (error)" % dispcmd)
            print("stdout was %s" % stdout)
        return None, p.returncode
    return stdout, p.returncode


LONG_VERSION_PY['git'] = r'''
# This file helps to compute a version number in source trees obtained from
# git-archive tarball (such as those provided by githubs download-from-tag
# feature). Distribution tarballs (built by setup.py sdist) and build
# directories (produced by setup.py build) will contain a much shorter file
# that just contains the computed version number.

# This file is released into the public domain. Generated by
# versioneer-0.19 (https://github.com/python-versioneer/python-versioneer)

"""Git implementation of _version.py."""

import errno
import os
import re
import subprocess
import sys


def get_keywords():
    """Get the keywords needed to look up the version information."""
    # these strings will be replaced by git during git-archive.
    # setup.py/versioneer.py will grep for the variable names, so they must
    # each be defined on a line of their own. _version.py will just call
    # get_keywords().
    git_refnames = "%(DOLLAR)sFormat:%%d%(DOLLAR)s"
    git_full = "%(DOLLAR)sFormat:%%H%(DOLLAR)s"
    git_date = "%(DOLLAR)sFormat:%%ci%(DOLLAR)s"
    keywords = {"refnames": git_refnames, "full": git_full, "date": git_date}
    return keywords


class VersioneerConfig:
    """Container for Versioneer configuration parameters."""


def get_config():
    """Create, populate and return the VersioneerConfig() object."""
    # these strings are filled in when 'setup.py versioneer' creates
    # _version.py
    cfg = VersioneerConfig()
    cfg.VCS = "git"
    cfg.style = "%(STYLE)s"
    cfg.tag_prefix = "%(TAG_PREFIX)s"
    cfg.parentdir_prefix = "%(PARENTDIR_PREFIX)s"
    cfg.versionfile_source = "%(VERSIONFILE_SOURCE)s"
    cfg.verbose = False
    return cfg


class NotThisMethod(Exception):
    """Exception raised if a method is not valid for the current scenario."""


LONG_VERSION_PY = {}
HANDLERS = {}


def register_vcs_handler(vcs, method):  # decorator
    """Create decorator to mark a method as the handler of a VCS."""
    def decorate(f):
        """Store f in HANDLERS[vcs][method]."""
        if vcs not in HANDLERS:
            HANDLERS[vcs] = {}
        HANDLERS[vcs][method] = f
        return f
    return decorate


def run_command(commands, args, cwd=None, verbose=False, hide_stderr=False,
                env=None):
    """Call the given command(s)."""
    assert isinstance(commands, list)
    p = None
    for c in commands:
        try:
            dispcmd = str([c] + args)
            # remember shell=False, so use git.cmd on windows, not just git
            p = subprocess.Popen([c] + args, cwd=cwd, env=env,
                                 stdout=subprocess.PIPE,
                                 stderr=(subprocess.PIPE if hide_stderr
                                         else None))
            break
        except EnvironmentError:
            e = sys.exc_info()[1]
            if e.errno == errno.ENOENT:
                continue
            if verbose:
                print("unable to run %%s" %% dispcmd)
                print(e)
            return None, None
    else:
        if verbose:
            print("unable to find command, tried %%s" %% (commands,))
        return None, None
    stdout = p.communicate()[0].strip().decode()
    if p.returncode != 0:
        if verbose:
            print("unable to run %%s (error)" %% dispcmd)
            print("stdout was %%s" %% stdout)
        return None, p.returncode
    return stdout, p.returncode


def versions_from_parentdir(parentdir_prefix, root, verbose):
    """Try to determine the version from the parent directory name.

    Source tarballs conventionally unpack into a directory that includes both
    the project name and a version string. We will also support searching up
    two directory levels for an appropriately named parent directory
    """
    rootdirs = []

    for i in range(3):
        dirname = os.path.basename(root)
        if dirname.startswith(parentdir_prefix):
            return {"version": dirname[len(parentdir_prefix):],
                    "full-revisionid": None,
                    "dirty": False, "error": None, "date": None}
        else:
            rootdirs.append(root)
            root = os.path.dirname(root)  # up a level

    if verbose:
        print("Tried directories %%s but none started with prefix %%s" %%
              (str(rootdirs), parentdir_prefix))
    raise NotThisMethod("rootdir doesn't start with parentdir_prefix")


@register_vcs_handler("git", "get_keywords")
def git_get_keywords(versionfile_abs):
    """Extract version information from the given file."""
    # the code embedded in _version.py can just fetch the value of these
    # keywords. When used from setup.py, we don't want to import _version.py,
    # so we do it with a regexp instead. This function is not used from
    # _version.py.
    keywords = {}
    try:
        f = open(versionfile_abs, "r")
        for line in f.readlines():
            if line.strip().startswith("git_refnames ="):
                mo = re.search(r'=\s*"(.*)"', line)
                if mo:
                    keywords["refnames"] = mo.group(1)
            if line.strip().startswith("git_full ="):
                mo = re.search(r'=\s*"(.*)"', line)
                if mo:
                    keywords["full"] = mo.group(1)
            if line.strip().startswith("git_date ="):
                mo = re.search(r'=\s*"(.*)"', line)
                if mo:
                    keywords["date"] = mo.group(1)
        f.close()
    except EnvironmentError:
        pass
    return keywords


@register_vcs_handler("git", "keywords")
def git_versions_from_keywords(keywords, tag_prefix, verbose):
    """Get version information from git keywords."""
    if not keywords:
        raise NotThisMethod("no keywords at all, weird")
    date = keywords.get("date")
    if date is not None:
        # Use only the last line.  Previous lines may contain GPG signature
        # information.
        date = date.splitlines()[-1]

        # git-2.2.0 added "%%cI", which expands to an ISO-8601 -compliant
        # datestamp. However we prefer "%%ci" (which expands to an "ISO-8601
        # -like" string, which we must then edit to make compliant), because
        # it's been around since git-1.5.3, and it's too difficult to
        # discover which version we're using, or to work around using an
        # older one.
        date = date.strip().replace(" ", "T", 1).replace(" ", "", 1)
    refnames = keywords["refnames"].strip()
    if refnames.startswith("$Format"):
        if verbose:
            print("keywords are unexpanded, not using")
        raise NotThisMethod("unexpanded keywords, not a git-archive tarball")
    refs = set([r.strip() for r in refnames.strip("()").split(",")])
    # starting in git-1.8.3, tags are listed as "tag: foo-1.0" instead of
    # just "foo-1.0". If we see a "tag: " prefix, prefer those.
    TAG = "tag: "
    tags = set([r[len(TAG):] for r in refs if r.startswith(TAG)])
    if not tags:
        # Either we're using git < 1.8.3, or there really are no tags. We use
        # a heuristic: assume all version tags have a digit. The old git %%d
        # expansion behaves like git log --decorate=short and strips out the
        # refs/heads/ and refs/tags/ prefixes that would let us distinguish
        # between branches and tags. By ignoring refnames without digits, we
        # filter out many common branch names like "release" and
        # "stabilization", as well as "HEAD" and "master".
        tags = set([r for r in refs if re.search(r'\d', r)])
        if verbose:
            print("discarding '%%s', no digits" %% ",".join(refs - tags))
    if verbose:
        print("likely tags: %%s" %% ",".join(sorted(tags)))
    for ref in sorted(tags):
        # sorting will prefer e.g. "2.0" over "2.0rc1"
        if ref.startswith(tag_prefix):
            r = ref[len(tag_prefix):]
            if verbose:
                print("picking %%s" %% r)
            return {"version": r,
                    "full-revisionid": keywords["full"].strip(),
                    "dirty": False, "error": None,
                    "date": date}
    # no suitable tags, so version is "0+unknown", but full hex is still there
    if verbose:
        print("no suitable tags, using unknown + full revision id")
    return {"version": "0+unknown",
            "full-revisionid": keywords["full"].strip(),
            "dirty": False, "error": "no suitable tags", "date": None}


@register_vcs_handler("git", "pieces_from_vcs")
def git_pieces_from_vcs(tag_prefix, root, verbose, run_command=run_command):
    """Get version from 'git describe' in the root of the source tree.

    This only gets called if the git-archive 'subst' keywords were *not*
    expanded, and _version.py hasn't already been rewritten with a short
    version string, meaning we're inside a checked out source tree.
    """
    GITS = ["git"]
    if sys.platform == "win32":
        GITS = ["git.cmd", "git.exe"]

    out, rc = run_command(GITS, ["rev-parse", "--git-dir"], cwd=root,
                          hide_stderr=True)
    if rc != 0:
        if verbose:
            print("Directory %%s not under git control" %% root)
        raise NotThisMethod("'git rev-parse --git-dir' returned error")

    # if there is a tag matching tag_prefix, this yields TAG-NUM-gHEX[-dirty]
    # if there isn't one, this yields HEX[-dirty] (no NUM)
    describe_out, rc = run_command(GITS, ["describe", "--tags", "--dirty",
                                          "--always", "--long",
                                          "--match", "%%s*" %% tag_prefix],
                                   cwd=root)
    # --long was added in git-1.5.5
    if describe_out is None:
        raise NotThisMethod("'git describe' failed")
    describe_out = describe_out.strip()
    full_out, rc = run_command(GITS, ["rev-parse", "HEAD"], cwd=root)
    if full_out is None:
        raise NotThisMethod("'git rev-parse' failed")
    full_out = full_out.strip()

    pieces = {}
    pieces["long"] = full_out
    pieces["short"] = full_out[:7]  # maybe improved later
    pieces["error"] = None

    # parse describe_out. It will be like TAG-NUM-gHEX[-dirty] or HEX[-dirty]
    # TAG might have hyphens.
    git_describe = describe_out

    # look for -dirty suffix
    dirty = git_describe.endswith("-dirty")
    pieces["dirty"] = dirty
    if dirty:
        git_describe = git_describe[:git_describe.rindex("-dirty")]

    # now we have TAG-NUM-gHEX or HEX

    if "-" in git_describe:
        # TAG-NUM-gHEX
        mo = re.search(r'^(.+)-(\d+)-g([0-9a-f]+)$', git_describe)
        if not mo:
            # unparseable. Maybe git-describe is misbehaving?
            pieces["error"] = ("unable to parse git-describe output: '%%s'"
                               %% describe_out)
            return pieces

        # tag
        full_tag = mo.group(1)
        if not full_tag.startswith(tag_prefix):
            if verbose:
                fmt = "tag '%%s' doesn't start with prefix '%%s'"
                print(fmt %% (full_tag, tag_prefix))
            pieces["error"] = ("tag '%%s' doesn't start with prefix '%%s'"
                               %% (full_tag, tag_prefix))
            return pieces
        pieces["closest-tag"] = full_tag[len(tag_prefix):]

        # distance: number of commits since tag
        pieces["distance"] = int(mo.group(2))

        # commit: short hex revision ID
        pieces["short"] = mo.group(3)

    else:
        # HEX: no tags
        pieces["closest-tag"] = None
        count_out, rc = run_command(GITS, ["rev-list", "HEAD", "--count"],
                                    cwd=root)
        pieces["distance"] = int(count_out)  # total number of commits

    # commit date: see ISO-8601 comment in git_versions_from_keywords()
    date = run_command(GITS, ["show", "-s", "--format=%%ci", "HEAD"],
                       cwd=root)[0].strip()
    # Use only the last line.  Previous lines may contain GPG signature
    # information.
    date = date.splitlines()[-1]
    pieces["date"] = date.strip().replace(" ", "T", 1).replace(" ", "", 1)

    return pieces


def plus_or_dot(pieces):
    """Return a + if we don't already have one, else return a ."""
    if "+" in pieces.get("closest-tag", ""):
        return "."
    return "+"


def render_pep440(pieces):
    """Build up version string, with post-release "local version identifier".

    Our goal: TAG[+DISTANCE.gHEX[.dirty]] . Note that if you
    get a tagged build and then dirty it, you'll get TAG+0.gHEX.dirty

    Exceptions:
    1: no tags. git_describe was just HEX. 0+untagged.DISTANCE.gHEX[.dirty]
    """
    if pieces["closest-tag"]:
        rendered = pieces["closest-tag"]
        if pieces["distance"] or pieces["dirty"]:
            rendered += plus_or_dot(pieces)
            rendered += "%%d.g%%s" %% (pieces["distance"], pieces["short"])
            if pieces["dirty"]:
                rendered += ".dirty"
    else:
        # exception #1
        rendered = "0+untagged.%%d.g%%s" %% (pieces["distance"],
                                          pieces["short"])
        if pieces["dirty"]:
            rendered += ".dirty"
    return rendered


def render_pep440_pre(pieces):
    """TAG[.post0.devDISTANCE] -- No -dirty.

    Exceptions:
    1: no tags. 0.post0.devDISTANCE
    """
    if pieces["closest-tag"]:
        rendered = pieces["closest-tag"]
        if pieces["distance"]:
            rendered += ".post0.dev%%d" %% pieces["distance"]
    else:
        # exception #1
        rendered = "0.post0.dev%%d" %% pieces["distance"]
    return rendered


def render_pep440_post(pieces):
    """TAG[.postDISTANCE[.dev0]+gHEX] .

    The ".dev0" means dirty. Note that .dev0 sorts backwards
    (a dirty tree will appear "older" than the corresponding clean one),
    but you shouldn't be releasing software with -dirty anyways.

    Exceptions:
    1: no tags. 0.postDISTANCE[.dev0]
    """
    if pieces["closest-tag"]:
        rendered = pieces["closest-tag"]
        if pieces["distance"] or pieces["dirty"]:
            rendered += ".post%%d" %% pieces["distance"]
            if pieces["dirty"]:
                rendered += ".dev0"
            rendered += plus_or_dot(pieces)
            rendered += "g%%s" %% pieces["short"]
    else:
        # exception #1
        rendered = "0.post%%d" %% pieces["distance"]
        if pieces["dirty"]:
            rendered += ".dev0"
        rendered += "+g%%s" %% pieces["short"]
    return rendered


def render_pep440_old(pieces):
    """TAG[.postDISTANCE[.dev0]] .

    The ".dev0" means dirty.

    Exceptions:
    1: no tags. 0.postDISTANCE[.dev0]
    """
    if pieces["closest-tag"]:
        rendered = pieces["closest-tag"]
        if pieces["distance"] or pieces["dirty"]:
            rendered += ".post%%d" %% pieces["distance"]
            if pieces["dirty"]:
                rendered += ".dev0"
    else:
        # exception #1
        rendered = "0.post%%d" %% pieces["distance"]
        if pieces["dirty"]:
            rendered += ".dev0"
    return rendered


def render_git_describe(pieces):
    """TAG[-DISTANCE-gHEX][-dirty].

    Like 'git describe --tags --dirty --always'.

    Exceptions:
    1: no tags. HEX[-dirty]  (note: no 'g' prefix)
    """
    if pieces["closest-tag"]:
        rendered = pieces["closest-tag"]
        if pieces["distance"]:
            rendered += "-%%d-g%%s" %% (pieces["distance"], pieces["short"])
    else:
        # exception #1
        rendered = pieces["short"]
    if pieces["dirty"]:
        rendered += "-dirty"
    return rendered


def render_git_describe_long(pieces):
    """TAG-DISTANCE-gHEX[-dirty].

    Like 'git describe --tags --dirty --always -long'.
    The distance/hash is unconditional.

    Exceptions:
    1: no tags. HEX[-dirty]  (note: no 'g' prefix)
    """
    if pieces["closest-tag"]:
        rendered = pieces["closest-tag"]
        rendered += "-%%d-g%%s" %% (pieces["distance"], pieces["short"])
    else:
        # exception #1
        rendered = pieces["short"]
    if pieces["dirty"]:
        rendered += "-dirty"
    return rendered


def render(pieces, style):
    """Render the given version pieces into the requested style."""
    if pieces["error"]:
        return {"version": "unknown",
                "full-revisionid": pieces.get("long"),
                "dirty": None,
                "error": pieces["error"],
                "date": None}

    if not style or style == "default":
        style = "pep440"  # the default

    if style == "pep440":
        rendered = render_pep440(pieces)
    elif style == "pep440-pre":
        rendered = render_pep440_pre(pieces)
    elif style == "pep440-post":
        rendered = render_pep440_post(pieces)
    elif style == "pep440-old":
        rendered = render_pep440_old(pieces)
    elif style == "git-describe":
        rendered = render_git_describe(pieces)
    elif style == "git-describe-long":
        rendered = render_git_describe_long(pieces)
    else:
        raise ValueError("unknown style '%%s'" %% style)

    return {"version": rendered, "full-revisionid": pieces["long"],
            "dirty": pieces["dirty"], "error": None,
            "date": pieces.get("date")}


def get_versions():
    """Get version information or return default if unable to do so."""
    # I am in _version.py, which lives at ROOT/VERSIONFILE_SOURCE. If we have
    # __file__, we can work backwards from there to the root. Some
    # py2exe/bbfreeze/non-CPython implementations don't do __file__, in which
    # case we can only use expanded keywords.

    cfg = get_config()
    verbose = cfg.verbose

    try:
        return git_versions_from_keywords(get_keywords(), cfg.tag_prefix,
                                          verbose)
    except NotThisMethod:
        pass

    try:
        root = os.path.realpath(__file__)
        # versionfile_source is the relative path from the top of the source
        # tree (where the .git directory might live) to this file. Invert
        # this to find the root from __file__.
        for i in cfg.versionfile_source.split('/'):
            root = os.path.dirname(root)
    except NameError:
        return {"version": "0+unknown", "full-revisionid": None,
                "dirty": None,
                "error": "unable to find root of source tree",
                "date": None}

    try:
        pieces = git_pieces_from_vcs(cfg.tag_prefix, root, verbose)
        return render(pieces, cfg.style)
    except NotThisMethod:
        pass

    try:
        if cfg.parentdir_prefix:
            return versions_from_parentdir(cfg.parentdir_prefix, root, verbose)
    except NotThisMethod:
        pass

    return {"version": "0+unknown", "full-revisionid": None,
            "dirty": None,
            "error": "unable to compute version", "date": None}
'''


@register_vcs_handler("git", "get_keywords")
def git_get_keywords(versionfile_abs):
    """Extract version information from the given file."""
    # the code embedded in _version.py can just fetch the value of these
    # keywords. When used from setup.py, we don't want to import _version.py,
    # so we do it with a regexp instead. This function is not used from
    # _version.py.
    keywords = {}
    try:
        f = open(versionfile_abs, "r")
        for line in f.readlines():
            if line.strip().startswith("git_refnames ="):
                mo = re.search(r'=\s*"(.*)"', line)
                if mo:
                    keywords["refnames"] = mo.group(1)
            if line.strip().startswith("git_full ="):
                mo = re.search(r'=\s*"(.*)"', line)
                if mo:
                    keywords["full"] = mo.group(1)
            if line.strip().startswith("git_date ="):
                mo = re.search(r'=\s*"(.*)"', line)
                if mo:
                    keywords["date"] = mo.group(1)
        f.close()
    except EnvironmentError:
        pass
    return keywords


@register_vcs_handler("git", "keywords")
def git_versions_from_keywords(keywords, tag_prefix, verbose):
    """Get version information from git keywords."""
    if not keywords:
        raise NotThisMethod("no keywords at all, weird")
    date = keywords.get("date")
    if date is not None:
        # Use only the last line.  Previous lines may contain GPG signature
        # information.
        date = date.splitlines()[-1]

        # git-2.2.0 added "%cI", which expands to an ISO-8601 -compliant
        # datestamp. However we prefer "%ci" (which expands to an "ISO-8601
        # -like" string, which we must then edit to make compliant), because
        # it's been around since git-1.5.3, and it's too difficult to
        # discover which version we're using, or to work around using an
        # older one.
        date = date.strip().replace(" ", "T", 1).replace(" ", "", 1)
    refnames = keywords["refnames"].strip()
    if refnames.startswith("$Format"):
        if verbose:
            print("keywords are unexpanded, not using")
        raise NotThisMethod("unexpanded keywords, not a git-archive tarball")
    refs = set([r.strip() for r in refnames.strip("()").split(",")])
    # starting in git-1.8.3, tags are listed as "tag: foo-1.0" instead of
    # just "foo-1.0". If we see a "tag: " prefix, prefer those.
    TAG = "tag: "
    tags = set([r[len(TAG):] for r in refs if r.startswith(TAG)])
    if not tags:
        # Either we're using git < 1.8.3, or there really are no tags. We use
        # a heuristic: assume all version tags have a digit. The old git %d
        # expansion behaves like git log --decorate=short and strips out the
        # refs/heads/ and refs/tags/ prefixes that would let us distinguish
        # between branches and tags. By ignoring refnames without digits, we
        # filter out many common branch names like "release" and
        # "stabilization", as well as "HEAD" and "master".
        tags = set([r for r in refs if re.search(r'\d', r)])
        if verbose:
            print("discarding '%s', no digits" % ",".join(refs - tags))
    if verbose:
        print("likely tags: %s" % ",".join(sorted(tags)))
    for ref in sorted(tags):
        # sorting will prefer e.g. "2.0" over "2.0rc1"
        if ref.startswith(tag_prefix):
            r = ref[len(tag_prefix):]
            if verbose:
                print("picking %s" % r)
            return {"version": r,
                    "full-revisionid": keywords["full"].strip(),
                    "dirty": False, "error": None,
                    "date": date}
    # no suitable tags, so version is "0+unknown", but full hex is still there
    if verbose:
        print("no suitable tags, using unknown + full revision id")
    return {"version": "0+unknown",
            "full-revisionid": keywords["full"].strip(),
            "dirty": False, "error": "no suitable tags", "date": None}


@register_vcs_handler("git", "pieces_from_vcs")
def git_pieces_from_vcs(tag_prefix, root, verbose, run_command=run_command):
    """Get version from 'git describe' in the root of the source tree.

    This only gets called if the git-archive 'subst' keywords were *not*
    expanded, and _version.py hasn't already been rewritten with a short
    version string, meaning we're inside a checked out source tree.
    """
    GITS = ["git"]
    if sys.platform == "win32":
        GITS = ["git.cmd", "git.exe"]

    out, rc = run_command(GITS, ["rev-parse", "--git-dir"], cwd=root,
                          hide_stderr=True)
    if rc != 0:
        if verbose:
            print("Directory %s not under git control" % root)
        raise NotThisMethod("'git rev-parse --git-dir' returned error")

    # if there is a tag matching tag_prefix, this yields TAG-NUM-gHEX[-dirty]
    # if there isn't one, this yields HEX[-dirty] (no NUM)
    describe_out, rc = run_command(GITS, ["describe", "--tags", "--dirty",
                                          "--always", "--long",
                                          "--match", "%s*" % tag_prefix],
                                   cwd=root)
    # --long was added in git-1.5.5
    if describe_out is None:
        raise NotThisMethod("'git describe' failed")
    describe_out = describe_out.strip()
    full_out, rc = run_command(GITS, ["rev-parse", "HEAD"], cwd=root)
    if full_out is None:
        raise NotThisMethod("'git rev-parse' failed")
    full_out = full_out.strip()

    pieces = {}
    pieces["long"] = full_out
    pieces["short"] = full_out[:7]  # maybe improved later
    pieces["error"] = None

    # parse describe_out. It will be like TAG-NUM-gHEX[-dirty] or HEX[-dirty]
    # TAG might have hyphens.
    git_describe = describe_out

    # look for -dirty suffix
    dirty = git_describe.endswith("-dirty")
    pieces["dirty"] = dirty
    if dirty:
        git_describe = git_describe[:git_describe.rindex("-dirty")]

    # now we have TAG-NUM-gHEX or HEX

    if "-" in git_describe:
        # TAG-NUM-gHEX
        mo = re.search(r'^(.+)-(\d+)-g([0-9a-f]+)$', git_describe)
        if not mo:
            # unparseable. Maybe git-describe is misbehaving?
            pieces["error"] = ("unable to parse git-describe output: '%s'"
                               % describe_out)
            return pieces

        # tag
        full_tag = mo.group(1)
        if not full_tag.startswith(tag_prefix):
            if verbose:
                fmt = "tag '%s' doesn't start with prefix '%s'"
                print(fmt % (full_tag, tag_prefix))
            pieces["error"] = ("tag '%s' doesn't start with prefix '%s'"
                               % (full_tag, tag_prefix))
            return pieces
        pieces["closest-tag"] = full_tag[len(tag_prefix):]

        # distance: number of commits since tag
        pieces["distance"] = int(mo.group(2))

        # commit: short hex revision ID
        pieces["short"] = mo.group(3)

    else:
        # HEX: no tags
        pieces["closest-tag"] = None
        count_out, rc = run_command(GITS, ["rev-list", "HEAD", "--count"],
                                    cwd=root)
        pieces["distance"] = int(count_out)  # total number of commits

    # commit date: see ISO-8601 comment in git_versions_from_keywords()
    date = run_command(GITS, ["show", "-s", "--format=%ci", "HEAD"],
                       cwd=root)[0].strip()
    # Use only the last line.  Previous lines may contain GPG signature
    # information.
    date = date.splitlines()[-1]
    pieces["date"] = date.strip().replace(" ", "T", 1).replace(" ", "", 1)

    return pieces


def do_vcs_install(manifest_in, versionfile_source, ipy):
    """Git-specific installation logic for Versioneer.

    For Git, this means creating/changing .gitattributes to mark _version.py
    for export-subst keyword substitution.
    """
    GITS = ["git"]
    if sys.platform == "win32":
        GITS = ["git.cmd", "git.exe"]
    files = [manifest_in, versionfile_source]
    if ipy:
        files.append(ipy)
    try:
        me = __file__
        if me.endswith(".pyc") or me.endswith(".pyo"):
            me = os.path.splitext(me)[0] + ".py"
        versioneer_file = os.path.relpath(me)
    except NameError:
        versioneer_file = "versioneer.py"
    files.append(versioneer_file)
    present = False
    try:
        f = open(".gitattributes", "r")
        for line in f.readlines():
            if line.strip().startswith(versionfile_source):
                if "export-subst" in line.strip().split()[1:]:
                    present = True
        f.close()
    except EnvironmentError:
        pass
    if not present:
        f = open(".gitattributes", "a+")
        f.write("%s export-subst\n" % versionfile_source)
        f.close()
        files.append(".gitattributes")
    run_command(GITS, ["add", "--"] + files)


def versions_from_parentdir(parentdir_prefix, root, verbose):
    """Try to determine the version from the parent directory name.

    Source tarballs conventionally unpack into a directory that includes both
    the project name and a version string. We will also support searching up
    two directory levels for an appropriately named parent directory
    """
    rootdirs = []

    for i in range(3):
        dirname = os.path.basename(root)
        if dirname.startswith(parentdir_prefix):
            return {"version": dirname[len(parentdir_prefix):],
                    "full-revisionid": None,
                    "dirty": False, "error": None, "date": None}
        else:
            rootdirs.append(root)
            root = os.path.dirname(root)  # up a level

    if verbose:
        print("Tried directories %s but none started with prefix %s" %
              (str(rootdirs), parentdir_prefix))
    raise NotThisMethod("rootdir doesn't start with parentdir_prefix")


SHORT_VERSION_PY = """
# This file was generated by 'versioneer.py' (0.19) from
# revision-control system data, or from the parent directory name of an
# unpacked source archive. Distribution tarballs contain a pre-generated copy
# of this file.

import json

version_json = '''
%s
'''  # END VERSION_JSON


def get_versions():
    return json.loads(version_json)
"""


def versions_from_file(filename):
    """Try to determine the version from _version.py if present."""
    try:
        with open(filename) as f:
            contents = f.read()
    except EnvironmentError:
        raise NotThisMethod("unable to read _version.py")
    mo = re.search(r"version_json = '''\n(.*)'''  # END VERSION_JSON",
                   contents, re.M | re.S)
    if not mo:
        mo = re.search(r"version_json = '''\r\n(.*)'''  # END VERSION_JSON",
                       contents, re.M | re.S)
    if not mo:
        raise NotThisMethod("no version_json in _version.py")
    return json.loads(mo.group(1))


def write_to_version_file(filename, versions):
    """Write the given version number to the given _version.py file."""
    os.unlink(filename)
    contents = json.dumps(versions, sort_keys=True,
                          indent=1, separators=(",", ": "))
    with open(filename, "w") as f:
        f.write(SHORT_VERSION_PY % contents)

    print("set %s to '%s'" % (filename, versions["version"]))


def plus_or_dot(pieces):
    """Return a + if we don't already have one, else return a ."""
    if "+" in pieces.get("closest-tag", ""):
        return "."
    return "+"


def render_pep440(pieces):
    """Build up version string, with post-release "local version identifier".

    Our goal: TAG[+DISTANCE.gHEX[.dirty]] . Note that if you
    get a tagged build and then dirty it, you'll get TAG+0.gHEX.dirty

    Exceptions:
    1: no tags. git_describe was just HEX. 0+untagged.DISTANCE.gHEX[.dirty]
    """
    if pieces["closest-tag"]:
        rendered = pieces["closest-tag"]
        if pieces["distance"] or pieces["dirty"]:
            rendered += plus_or_dot(pieces)
            rendered += "%d.g%s" % (pieces["distance"], pieces["short"])
            if pieces["dirty"]:
                rendered += ".dirty"
    else:
        # exception #1
        rendered = "0+untagged.%d.g%s" % (pieces["distance"],
                                          pieces["short"])
        if pieces["dirty"]:
            rendered += ".dirty"
    return rendered


def render_pep440_pre(pieces):
    """TAG[.post0.devDISTANCE] -- No -dirty.

    Exceptions:
    1: no tags. 0.post0.devDISTANCE
    """
    if pieces["closest-tag"]:
        rendered = pieces["closest-tag"]
        if pieces["distance"]:
            rendered += ".post0.dev%d" % pieces["distance"]
    else:
        # exception #1
        rendered = "0.post0.dev%d" % pieces["distance"]
    return rendered


def render_pep440_post(pieces):
    """TAG[.postDISTANCE[.dev0]+gHEX] .

    The ".dev0" means dirty. Note that .dev0 sorts backwards
    (a dirty tree will appear "older" than the corresponding clean one),
    but you shouldn't be releasing software with -dirty anyways.

    Exceptions:
    1: no tags. 0.postDISTANCE[.dev0]
    """
    if pieces["closest-tag"]:
        rendered = pieces["closest-tag"]
        if pieces["distance"] or pieces["dirty"]:
            rendered += ".post%d" % pieces["distance"]
            if pieces["dirty"]:
                rendered += ".dev0"
            rendered += plus_or_dot(pieces)
            rendered += "g%s" % pieces["short"]
    else:
        # exception #1
        rendered = "0.post%d" % pieces["distance"]
        if pieces["dirty"]:
            rendered += ".dev0"
        rendered += "+g%s" % pieces["short"]
    return rendered


def render_pep440_old(pieces):
    """TAG[.postDISTANCE[.dev0]] .

    The ".dev0" means dirty.

    Exceptions:
    1: no tags. 0.postDISTANCE[.dev0]
    """
    if pieces["closest-tag"]:
        rendered = pieces["closest-tag"]
        if pieces["distance"] or pieces["dirty"]:
            rendered += ".post%d" % pieces["distance"]
            if pieces["dirty"]:
                rendered += ".dev0"
    else:
        # exception #1
        rendered = "0.post%d" % pieces["distance"]
        if pieces["dirty"]:
            rendered += ".dev0"
    return rendered


def render_git_describe(pieces):
    """TAG[-DISTANCE-gHEX][-dirty].

    Like 'git describe --tags --dirty --always'.

    Exceptions:
    1: no tags. HEX[-dirty]  (note: no 'g' prefix)
    """
    if pieces["closest-tag"]:
        rendered = pieces["closest-tag"]
        if pieces["distance"]:
            rendered += "-%d-g%s" % (pieces["distance"], pieces["short"])
    else:
        # exception #1
        rendered = pieces["short"]
    if pieces["dirty"]:
        rendered += "-dirty"
    return rendered


def render_git_describe_long(pieces):
    """TAG-DISTANCE-gHEX[-dirty].

    Like 'git describe --tags --dirty --always -long'.
    The distance/hash is unconditional.

    Exceptions:
    1: no tags. HEX[-dirty]  (note: no 'g' prefix)
    """
    if pieces["closest-tag"]:
        rendered = pieces["closest-tag"]
        rendered += "-%d-g%s" % (pieces["distance"], pieces["short"])
    else:
        # exception #1
        rendered = pieces["short"]
    if pieces["dirty"]:
        rendered += "-dirty"
    return rendered


def render(pieces, style):
    """Render the given version pieces into the requested style."""
    if pieces["error"]:
        return {"version": "unknown",
                "full-revisionid": pieces.get("long"),
                "dirty": None,
                "error": pieces["error"],
                "date": None}

    if not style or style == "default":
        style = "pep440"  # the default

    if style == "pep440":
        rendered = render_pep440(pieces)
    elif style == "pep440-pre":
        rendered = render_pep440_pre(pieces)
    elif style == "pep440-post":
        rendered = render_pep440_post(pieces)
    elif style == "pep440-old":
        rendered = render_pep440_old(pieces)
    elif style == "git-describe":
        rendered = render_git_describe(pieces)
    elif style == "git-describe-long":
        rendered = render_git_describe_long(pieces)
    else:
        raise ValueError("unknown style '%s'" % style)

    return {"version": rendered, "full-revisionid": pieces["long"],
            "dirty": pieces["dirty"], "error": None,
            "date": pieces.get("date")}


class VersioneerBadRootError(Exception):
    """The project root directory is unknown or missing key files."""


def get_versions(verbose=False):
    """Get the project version from whatever source is available.

    Returns dict with two keys: 'version' and 'full'.
    """
    if "versioneer" in sys.modules:
        # see the discussion in cmdclass.py:get_cmdclass()
        del sys.modules["versioneer"]

    root = get_root()
    cfg = get_config_from_root(root)

    assert cfg.VCS is not None, "please set [versioneer]VCS= in setup.cfg"
    handlers = HANDLERS.get(cfg.VCS)
    assert handlers, "unrecognized VCS '%s'" % cfg.VCS
    verbose = verbose or cfg.verbose
    assert cfg.versionfile_source is not None, \
        "please set versioneer.versionfile_source"
    assert cfg.tag_prefix is not None, "please set versioneer.tag_prefix"

    versionfile_abs = os.path.join(root, cfg.versionfile_source)

    # extract version from first of: _version.py, VCS command (e.g. 'git
    # describe'), parentdir. This is meant to work for developers using a
    # source checkout, for users of a tarball created by 'setup.py sdist',
    # and for users of a tarball/zipball created by 'git archive' or github's
    # download-from-tag feature or the equivalent in other VCSes.

    get_keywords_f = handlers.get("get_keywords")
    from_keywords_f = handlers.get("keywords")
    if get_keywords_f and from_keywords_f:
        try:
            keywords = get_keywords_f(versionfile_abs)
            ver = from_keywords_f(keywords, cfg.tag_prefix, verbose)
            if verbose:
                print("got version from expanded keyword %s" % ver)
            return ver
        except NotThisMethod:
            pass

    try:
        ver = versions_from_file(versionfile_abs)
        if verbose:
            print("got version from file %s %s" % (versionfile_abs, ver))
        return ver
    except NotThisMethod:
        pass

    from_vcs_f = handlers.get("pieces_from_vcs")
    if from_vcs_f:
        try:
            pieces = from_vcs_f(cfg.tag_prefix, root, verbose)
            ver = render(pieces, cfg.style)
            if verbose:
                print("got version from VCS %s" % ver)
            return ver
        except NotThisMethod:
            pass

    try:
        if cfg.parentdir_prefix:
            ver = versions_from_parentdir(cfg.parentdir_prefix, root, verbose)
            if verbose:
                print("got version from parentdir %s" % ver)
            return ver
    except NotThisMethod:
        pass

    if verbose:
        print("unable to compute version")

    return {"version": "0+unknown", "full-revisionid": None,
            "dirty": None, "error": "unable to compute version",
            "date": None}


def get_version():
    """Get the short version string for this project."""
    return get_versions()["version"]


def get_cmdclass(cmdclass=None):
    """Get the custom setuptools/distutils subclasses used by Versioneer.

    If the package uses a different cmdclass (e.g. one from numpy), it
    should be provide as an argument.
    """
    if "versioneer" in sys.modules:
        del sys.modules["versioneer"]
        # this fixes the "python setup.py develop" case (also 'install' and
        # 'easy_install .'), in which subdependencies of the main project are
        # built (using setup.py bdist_egg) in the same python process. Assume
        # a main project A and a dependency B, which use different versions
        # of Versioneer. A's setup.py imports A's Versioneer, leaving it in
        # sys.modules by the time B's setup.py is executed, causing B to run
        # with the wrong versioneer. Setuptools wraps the sub-dep builds in a
        # sandbox that restores sys.modules to it's pre-build state, so the
        # parent is protected against the child's "import versioneer". By
        # removing ourselves from sys.modules here, before the child build
        # happens, we protect the child from the parent's versioneer too.
        # Also see https://github.com/python-versioneer/python-versioneer/issues/52

    cmds = {} if cmdclass is None else cmdclass.copy()

    # we add "version" to both distutils and setuptools
    from distutils.core import Command

    class cmd_version(Command):
        description = "report generated version string"
        user_options = []
        boolean_options = []

        def initialize_options(self):
            pass

        def finalize_options(self):
            pass

        def run(self):
            vers = get_versions(verbose=True)
            print("Version: %s" % vers["version"])
            print(" full-revisionid: %s" % vers.get("full-revisionid"))
            print(" dirty: %s" % vers.get("dirty"))
            print(" date: %s" % vers.get("date"))
            if vers["error"]:
                print(" error: %s" % vers["error"])
    cmds["version"] = cmd_version

    # we override "build_py" in both distutils and setuptools
    #
    # most invocation pathways end up running build_py:
    #  distutils/build -> build_py
    #  distutils/install -> distutils/build ->..
    #  setuptools/bdist_wheel -> distutils/install ->..
    #  setuptools/bdist_egg -> distutils/install_lib -> build_py
    #  setuptools/install -> bdist_egg ->..
    #  setuptools/develop -> ?
    #  pip install:
    #   copies source tree to a tempdir before running egg_info/etc
    #   if .git isn't copied too, 'git describe' will fail
    #   then does setup.py bdist_wheel, or sometimes setup.py install
    #  setup.py egg_info -> ?

    # we override different "build_py" commands for both environments
    if 'build_py' in cmds:
        _build_py = cmds['build_py']
    elif "setuptools" in sys.modules:
        from setuptools.command.build_py import build_py as _build_py
    else:
        from distutils.command.build_py import build_py as _build_py

    class cmd_build_py(_build_py):
        def run(self):
            root = get_root()
            cfg = get_config_from_root(root)
            versions = get_versions()
            _build_py.run(self)
            # now locate _version.py in the new build/ directory and replace
            # it with an updated value
            if cfg.versionfile_build:
                target_versionfile = os.path.join(self.build_lib,
                                                  cfg.versionfile_build)
                print("UPDATING %s" % target_versionfile)
                write_to_version_file(target_versionfile, versions)
    cmds["build_py"] = cmd_build_py

    if "setuptools" in sys.modules:
        from setuptools.command.build_ext import build_ext as _build_ext
    else:
        from distutils.command.build_ext import build_ext as _build_ext

    class cmd_build_ext(_build_ext):
        def run(self):
            root = get_root()
            cfg = get_config_from_root(root)
            versions = get_versions()
            _build_ext.run(self)
            if self.inplace:
                # build_ext --inplace will only build extensions in
                # build/lib<..> dir with no _version.py to write to.
                # As in place builds will already have a _version.py
                # in the module dir, we do not need to write one.
                return
            # now locate _version.py in the new build/ directory and replace
            # it with an updated value
            target_versionfile = os.path.join(self.build_lib,
                                              cfg.versionfile_source)
            print("UPDATING %s" % target_versionfile)
            write_to_version_file(target_versionfile, versions)
    cmds["build_ext"] = cmd_build_ext

    if "cx_Freeze" in sys.modules:  # cx_freeze enabled?
        from cx_Freeze.dist import build_exe as _build_exe
        # nczeczulin reports that py2exe won't like the pep440-style string
        # as FILEVERSION, but it can be used for PRODUCTVERSION, e.g.
        # setup(console=[{
        #   "version": versioneer.get_version().split("+", 1)[0], # FILEVERSION
        #   "product_version": versioneer.get_version(),
        #   ...

        class cmd_build_exe(_build_exe):
            def run(self):
                root = get_root()
                cfg = get_config_from_root(root)
                versions = get_versions()
                target_versionfile = cfg.versionfile_source
                print("UPDATING %s" % target_versionfile)
                write_to_version_file(target_versionfile, versions)

                _build_exe.run(self)
                os.unlink(target_versionfile)
                with open(cfg.versionfile_source, "w") as f:
                    LONG = LONG_VERSION_PY[cfg.VCS]
                    f.write(LONG %
                            {"DOLLAR": "$",
                             "STYLE": cfg.style,
                             "TAG_PREFIX": cfg.tag_prefix,
                             "PARENTDIR_PREFIX": cfg.parentdir_prefix,
                             "VERSIONFILE_SOURCE": cfg.versionfile_source,
                             })
        cmds["build_exe"] = cmd_build_exe
        del cmds["build_py"]

    if 'py2exe' in sys.modules:  # py2exe enabled?
        from py2exe.distutils_buildexe import py2exe as _py2exe

        class cmd_py2exe(_py2exe):
            def run(self):
                root = get_root()
                cfg = get_config_from_root(root)
                versions = get_versions()
                target_versionfile = cfg.versionfile_source
                print("UPDATING %s" % target_versionfile)
                write_to_version_file(target_versionfile, versions)

                _py2exe.run(self)
                os.unlink(target_versionfile)
                with open(cfg.versionfile_source, "w") as f:
                    LONG = LONG_VERSION_PY[cfg.VCS]
                    f.write(LONG %
                            {"DOLLAR": "$",
                             "STYLE": cfg.style,
                             "TAG_PREFIX": cfg.tag_prefix,
                             "PARENTDIR_PREFIX": cfg.parentdir_prefix,
                             "VERSIONFILE_SOURCE": cfg.versionfile_source,
                             })
        cmds["py2exe"] = cmd_py2exe

    # we override different "sdist" commands for both environments
    if 'sdist' in cmds:
        _sdist = cmds['sdist']
    elif "setuptools" in sys.modules:
        from setuptools.command.sdist import sdist as _sdist
    else:
        from distutils.command.sdist import sdist as _sdist

    class cmd_sdist(_sdist):
        def run(self):
            versions = get_versions()
            self._versioneer_generated_versions = versions
            # unless we update this, the command will keep using the old
            # version
            self.distribution.metadata.version = versions["version"]
            return _sdist.run(self)

        def make_release_tree(self, base_dir, files):
            root = get_root()
            cfg = get_config_from_root(root)
            _sdist.make_release_tree(self, base_dir, files)
            # now locate _version.py in the new base_dir directory
            # (remembering that it may be a hardlink) and replace it with an
            # updated value
            target_versionfile = os.path.join(base_dir, cfg.versionfile_source)
            print("UPDATING %s" % target_versionfile)
            write_to_version_file(target_versionfile,
                                  self._versioneer_generated_versions)
    cmds["sdist"] = cmd_sdist

    return cmds


CONFIG_ERROR = """
setup.cfg is missing the necessary Versioneer configuration. You need
a section like:

 [versioneer]
 VCS = git
 style = pep440
 versionfile_source = src/myproject/_version.py
 versionfile_build = myproject/_version.py
 tag_prefix =
 parentdir_prefix = myproject-

You will also need to edit your setup.py to use the results:

 import versioneer
 setup(version=versioneer.get_version(),
       cmdclass=versioneer.get_cmdclass(), ...)

Please read the docstring in ./versioneer.py for configuration instructions,
edit setup.cfg, and re-run the installer or 'python versioneer.py setup'.
"""

SAMPLE_CONFIG = """
# See the docstring in versioneer.py for instructions. Note that you must
# re-run 'versioneer.py setup' after changing this section, and commit the
# resulting files.

[versioneer]
#VCS = git
#style = pep440
#versionfile_source =
#versionfile_build =
#tag_prefix =
#parentdir_prefix =

"""

INIT_PY_SNIPPET = """
from ._version import get_versions
__version__ = get_versions()['version']
del get_versions
"""


def do_setup():
    """Do main VCS-independent setup function for installing Versioneer."""
    root = get_root()
    try:
        cfg = get_config_from_root(root)
    except (EnvironmentError, configparser.NoSectionError,
            configparser.NoOptionError) as e:
        if isinstance(e, (EnvironmentError, configparser.NoSectionError)):
            print("Adding sample versioneer config to setup.cfg",
                  file=sys.stderr)
            with open(os.path.join(root, "setup.cfg"), "a") as f:
                f.write(SAMPLE_CONFIG)
        print(CONFIG_ERROR, file=sys.stderr)
        return 1

    print(" creating %s" % cfg.versionfile_source)
    with open(cfg.versionfile_source, "w") as f:
        LONG = LONG_VERSION_PY[cfg.VCS]
        f.write(LONG % {"DOLLAR": "$",
                        "STYLE": cfg.style,
                        "TAG_PREFIX": cfg.tag_prefix,
                        "PARENTDIR_PREFIX": cfg.parentdir_prefix,
                        "VERSIONFILE_SOURCE": cfg.versionfile_source,
                        })

    ipy = os.path.join(os.path.dirname(cfg.versionfile_source),
                       "__init__.py")
    if os.path.exists(ipy):
        try:
            with open(ipy, "r") as f:
                old = f.read()
        except EnvironmentError:
            old = ""
        if INIT_PY_SNIPPET not in old:
            print(" appending to %s" % ipy)
            with open(ipy, "a") as f:
                f.write(INIT_PY_SNIPPET)
        else:
            print(" %s unmodified" % ipy)
    else:
        print(" %s doesn't exist, ok" % ipy)
        ipy = None

    # Make sure both the top-level "versioneer.py" and versionfile_source
    # (PKG/_version.py, used by runtime code) are in MANIFEST.in, so
    # they'll be copied into source distributions. Pip won't be able to
    # install the package without this.
    manifest_in = os.path.join(root, "MANIFEST.in")
    simple_includes = set()
    try:
        with open(manifest_in, "r") as f:
            for line in f:
                if line.startswith("include "):
                    for include in line.split()[1:]:
                        simple_includes.add(include)
    except EnvironmentError:
        pass
    # That doesn't cover everything MANIFEST.in can do
    # (http://docs.python.org/2/distutils/sourcedist.html#commands), so
    # it might give some false negatives. Appending redundant 'include'
    # lines is safe, though.
    if "versioneer.py" not in simple_includes:
        print(" appending 'versioneer.py' to MANIFEST.in")
        with open(manifest_in, "a") as f:
            f.write("include versioneer.py\n")
    else:
        print(" 'versioneer.py' already in MANIFEST.in")
    if cfg.versionfile_source not in simple_includes:
        print(" appending versionfile_source ('%s') to MANIFEST.in" %
              cfg.versionfile_source)
        with open(manifest_in, "a") as f:
            f.write("include %s\n" % cfg.versionfile_source)
    else:
        print(" versionfile_source already in MANIFEST.in")

    # Make VCS-specific changes. For git, this means creating/changing
    # .gitattributes to mark _version.py for export-subst keyword
    # substitution.
    do_vcs_install(manifest_in, cfg.versionfile_source, ipy)
    return 0


def scan_setup_py():
    """Validate the contents of setup.py against Versioneer's expectations."""
    found = set()
    setters = False
    errors = 0
    with open("setup.py", "r") as f:
        for line in f.readlines():
            if "import versioneer" in line:
                found.add("import")
            if "versioneer.get_cmdclass()" in line:
                found.add("cmdclass")
            if "versioneer.get_version()" in line:
                found.add("get_version")
            if "versioneer.VCS" in line:
                setters = True
            if "versioneer.versionfile_source" in line:
                setters = True
    if len(found) != 3:
        print("")
        print("Your setup.py appears to be missing some important items")
        print("(but I might be wrong). Please make sure it has something")
        print("roughly like the following:")
        print("")
        print(" import versioneer")
        print(" setup( version=versioneer.get_version(),")
        print("        cmdclass=versioneer.get_cmdclass(),  ...)")
        print("")
        errors += 1
    if setters:
        print("You should remove lines like 'versioneer.VCS = ' and")
        print("'versioneer.versionfile_source = ' . This configuration")
        print("now lives in setup.cfg, and should be removed from setup.py")
        print("")
        errors += 1
    return errors


if __name__ == "__main__":
    cmd = sys.argv[1]
    if cmd == "setup":
        errors = do_setup()
        errors += scan_setup_py()
        if errors:
            sys.exit(1)