iso8601-0.1.12/0000755000076600000240000000000013136461560012760 5ustar mickstaff00000000000000iso8601-0.1.12/dev-requirements.txt0000644000076600000240000000012213136460264017013 0ustar mickstaff00000000000000devpi>=1.2.1 pytest>=2.5.2 Sphinx>=1.2.1 tox-pyenv>=1.0.3 tox>=1.7.0 wheel>=0.22.0iso8601-0.1.12/iso8601/0000755000076600000240000000000013136461560014071 5ustar mickstaff00000000000000iso8601-0.1.12/iso8601/__init__.py0000644000076600000240000000002713136457034016202 0ustar mickstaff00000000000000from .iso8601 import * iso8601-0.1.12/iso8601/iso8601.py0000644000076600000240000001501613136457034015560 0ustar mickstaff00000000000000"""ISO 8601 date time string parsing Basic usage: >>> import iso8601 >>> iso8601.parse_date("2007-01-25T12:00:00Z") datetime.datetime(2007, 1, 25, 12, 0, tzinfo=) >>> """ import datetime from decimal import Decimal import sys import re __all__ = ["parse_date", "ParseError", "UTC", "FixedOffset"] if sys.version_info >= (3, 0, 0): _basestring = str else: _basestring = basestring # Adapted from http://delete.me.uk/2005/03/iso8601.html ISO8601_REGEX = re.compile( r""" (?P[0-9]{4}) ( ( (-(?P[0-9]{1,2})) | (?P[0-9]{2}) (?!$) # Don't allow YYYYMM ) ( ( (-(?P[0-9]{1,2})) | (?P[0-9]{2}) ) ( ( (?P[ T]) (?P[0-9]{2}) (:{0,1}(?P[0-9]{2})){0,1} ( :{0,1}(?P[0-9]{1,2}) ([.,](?P[0-9]+)){0,1} ){0,1} (?P Z | ( (?P[-+]) (?P[0-9]{2}) :{0,1} (?P[0-9]{2}){0,1} ) ){0,1} ){0,1} ) ){0,1} # YYYY-MM ){0,1} # YYYY only $ """, re.VERBOSE ) class ParseError(Exception): """Raised when there is a problem parsing a date string""" if sys.version_info >= (3, 2, 0): UTC = datetime.timezone.utc def FixedOffset(offset_hours, offset_minutes, name): return datetime.timezone( datetime.timedelta( hours=offset_hours, minutes=offset_minutes), name) else: # Yoinked from python docs ZERO = datetime.timedelta(0) class Utc(datetime.tzinfo): """UTC Timezone """ def utcoffset(self, dt): return ZERO def tzname(self, dt): return "UTC" def dst(self, dt): return ZERO def __repr__(self): return "" UTC = Utc() class FixedOffset(datetime.tzinfo): """Fixed offset in hours and minutes from UTC """ def __init__(self, offset_hours, offset_minutes, name): self.__offset_hours = offset_hours # Keep for later __getinitargs__ self.__offset_minutes = offset_minutes # Keep for later __getinitargs__ self.__offset = datetime.timedelta( hours=offset_hours, minutes=offset_minutes) self.__name = name def __eq__(self, other): if isinstance(other, FixedOffset): return ( (other.__offset == self.__offset) and (other.__name == self.__name) ) return NotImplemented def __getinitargs__(self): return (self.__offset_hours, self.__offset_minutes, self.__name) def utcoffset(self, dt): return self.__offset def tzname(self, dt): return self.__name def dst(self, dt): return ZERO def __repr__(self): return "" % (self.__name, self.__offset) def to_int(d, key, default_to_zero=False, default=None, required=True): """Pull a value from the dict and convert to int :param default_to_zero: If the value is None or empty, treat it as zero :param default: If the value is missing in the dict use this default """ value = d.get(key) or default if (value in ["", None]) and default_to_zero: return 0 if value is None: if required: raise ParseError("Unable to read %s from %s" % (key, d)) else: return int(value) def parse_timezone(matches, default_timezone=UTC): """Parses ISO 8601 time zone specs into tzinfo offsets """ if matches["timezone"] == "Z": return UTC # This isn't strictly correct, but it's common to encounter dates without # timezones so I'll assume the default (which defaults to UTC). # Addresses issue 4. if matches["timezone"] is None: return default_timezone sign = matches["tz_sign"] hours = to_int(matches, "tz_hour") minutes = to_int(matches, "tz_minute", default_to_zero=True) description = "%s%02d:%02d" % (sign, hours, minutes) if sign == "-": hours = -hours minutes = -minutes return FixedOffset(hours, minutes, description) def parse_date(datestring, default_timezone=UTC): """Parses ISO 8601 dates into datetime objects The timezone is parsed from the date string. However it is quite common to have dates without a timezone (not strictly correct). In this case the default timezone specified in default_timezone is used. This is UTC by default. :param datestring: The date to parse as a string :param default_timezone: A datetime tzinfo instance to use when no timezone is specified in the datestring. If this is set to None then a naive datetime object is returned. :returns: A datetime.datetime instance :raises: ParseError when there is a problem parsing the date or constructing the datetime instance. """ if not isinstance(datestring, _basestring): raise ParseError("Expecting a string %r" % datestring) m = ISO8601_REGEX.match(datestring) if not m: raise ParseError("Unable to parse date string %r" % datestring) groups = m.groupdict() tz = parse_timezone(groups, default_timezone=default_timezone) groups["second_fraction"] = int(Decimal("0.%s" % (groups["second_fraction"] or 0)) * Decimal("1000000.0")) try: return datetime.datetime( year=to_int(groups, "year"), month=to_int(groups, "month", default=to_int(groups, "monthdash", required=False, default=1)), day=to_int(groups, "day", default=to_int(groups, "daydash", required=False, default=1)), hour=to_int(groups, "hour", default_to_zero=True), minute=to_int(groups, "minute", default_to_zero=True), second=to_int(groups, "second", default_to_zero=True), microsecond=groups["second_fraction"], tzinfo=tz, ) except Exception as e: raise ParseError(e) iso8601-0.1.12/iso8601/test_iso8601.py0000644000076600000240000001717213136457034016624 0ustar mickstaff00000000000000# coding=UTF-8 from __future__ import absolute_import import copy import datetime import pickle import pytest from iso8601 import iso8601 def test_iso8601_regex(): assert iso8601.ISO8601_REGEX.match("2006-10-11T00:14:33Z") def test_fixedoffset_eq(): # See https://bitbucket.org/micktwomey/pyiso8601/issues/19 datetime.tzinfo() == iso8601.FixedOffset(2, 0, '+2:00') def test_parse_no_timezone_different_default(): tz = iso8601.FixedOffset(2, 0, "test offset") d = iso8601.parse_date("2007-01-01T08:00:00", default_timezone=tz) assert d == datetime.datetime(2007, 1, 1, 8, 0, 0, 0, tz) assert d.tzinfo == tz def test_parse_utc_different_default(): """Z should mean 'UTC', not 'default'. """ tz = iso8601.FixedOffset(2, 0, "test offset") d = iso8601.parse_date("2007-01-01T08:00:00Z", default_timezone=tz) assert d == datetime.datetime(2007, 1, 1, 8, 0, 0, 0, iso8601.UTC) @pytest.mark.parametrize("invalid_date, error_string", [ ("2013-10-", "Unable to parse date string"), ("2013-", "Unable to parse date string"), ("", "Unable to parse date string"), (None, "Expecting a string"), ("wibble", "Unable to parse date string"), ("23", "Unable to parse date string"), ("131015T142533Z", "Unable to parse date string"), ("131015", "Unable to parse date string"), ("20141", "Unable to parse date string"), ("201402", "Unable to parse date string"), ("2007-06-23X06:40:34.00Z", "Unable to parse date string"), # https://code.google.com/p/pyiso8601/issues/detail?id=14 ("2007-06-23 06:40:34.00Zrubbish", "Unable to parse date string"), # https://code.google.com/p/pyiso8601/issues/detail?id=14 ("20114-01-03T01:45:49", "Unable to parse date string"), ]) def test_parse_invalid_date(invalid_date, error_string): assert isinstance(invalid_date, str) or invalid_date is None # Why? 'cos I've screwed up the parametrize before :) with pytest.raises(iso8601.ParseError) as exc: iso8601.parse_date(invalid_date) assert exc.errisinstance(iso8601.ParseError) assert str(exc.value).startswith(error_string) @pytest.mark.parametrize("valid_date,expected_datetime,isoformat", [ ("2007-06-23 06:40:34.00Z", datetime.datetime(2007, 6, 23, 6, 40, 34, 0, iso8601.UTC), "2007-06-23T06:40:34+00:00"), # Handle a separator other than T ("1997-07-16T19:20+01:00", datetime.datetime(1997, 7, 16, 19, 20, 0, 0, iso8601.FixedOffset(1, 0, "+01:00")), "1997-07-16T19:20:00+01:00"), # Parse with no seconds ("2007-01-01T08:00:00", datetime.datetime(2007, 1, 1, 8, 0, 0, 0, iso8601.UTC), "2007-01-01T08:00:00+00:00"), # Handle timezone-less dates. Assumes UTC. http://code.google.com/p/pyiso8601/issues/detail?id=4 ("2006-10-20T15:34:56.123+02:30", datetime.datetime(2006, 10, 20, 15, 34, 56, 123000, iso8601.FixedOffset(2, 30, "+02:30")), None), ("2006-10-20T15:34:56Z", datetime.datetime(2006, 10, 20, 15, 34, 56, 0, iso8601.UTC), "2006-10-20T15:34:56+00:00"), ("2007-5-7T11:43:55.328Z", datetime.datetime(2007, 5, 7, 11, 43, 55, 328000, iso8601.UTC), "2007-05-07T11:43:55.328000+00:00"), # http://code.google.com/p/pyiso8601/issues/detail?id=6 ("2006-10-20T15:34:56.123Z", datetime.datetime(2006, 10, 20, 15, 34, 56, 123000, iso8601.UTC), "2006-10-20T15:34:56.123000+00:00"), ("2013-10-15T18:30Z", datetime.datetime(2013, 10, 15, 18, 30, 0, 0, iso8601.UTC), "2013-10-15T18:30:00+00:00"), ("2013-10-15T22:30+04", datetime.datetime(2013, 10, 15, 22, 30, 0, 0, iso8601.FixedOffset(4, 0, "+04:00")), "2013-10-15T22:30:00+04:00"), #