69 lines
2.9 KiB
Python
69 lines
2.9 KiB
Python
##############################################################################
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# Copyright 2009, Gerhard Weis
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# All rights reserved.
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#
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# Redistribution and use in source and binary forms, with or without
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# modification, are permitted provided that the following conditions are met:
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#
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# * Redistributions of source code must retain the above copyright notice,
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# this list of conditions and the following disclaimer.
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# * Redistributions in binary form must reproduce the above copyright notice,
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# this list of conditions and the following disclaimer in the documentation
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# and/or other materials provided with the distribution.
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# * Neither the name of the authors nor the names of its contributors
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# may be used to endorse or promote products derived from this software
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# without specific prior written permission.
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#
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# THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
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# AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
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# IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
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# ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR CONTRIBUTORS BE
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# LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
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# CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
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# SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
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# INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
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# CONTRACT, STRICT LIABILITY, OR TORT
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##############################################################################
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'''
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This module defines a method to parse an ISO 8601:2004 date time string.
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For this job it uses the parse_date and parse_time methods defined in date
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and time module.
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'''
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from datetime import datetime
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from isodate.isostrf import strftime
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from isodate.isostrf import DATE_EXT_COMPLETE, TIME_EXT_COMPLETE, TZ_EXT
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from isodate.isodates import parse_date
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from isodate.isoerror import ISO8601Error
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from isodate.isotime import parse_time
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def parse_datetime(datetimestring):
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'''
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Parses ISO 8601 date-times into datetime.datetime objects.
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This function uses parse_date and parse_time to do the job, so it allows
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more combinations of date and time representations, than the actual
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ISO 8601:2004 standard allows.
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'''
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try:
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datestring, timestring = datetimestring.split('T')
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except ValueError:
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raise ISO8601Error("ISO 8601 time designator 'T' missing. Unable to"
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" parse datetime string %r" % datetimestring)
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tmpdate = parse_date(datestring)
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tmptime = parse_time(timestring)
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return datetime.combine(tmpdate, tmptime)
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def datetime_isoformat(tdt, format=DATE_EXT_COMPLETE + 'T' +
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TIME_EXT_COMPLETE + TZ_EXT):
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'''
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Format datetime strings.
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This method is just a wrapper around isodate.isostrf.strftime and uses
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Extended-Complete as default format.
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'''
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return strftime(tdt, format)
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