47 lines
1.1 KiB
Python
47 lines
1.1 KiB
Python
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# Copyright (c) 2014, Menno Smits
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# Released subject to the New BSD License
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# Please see http://en.wikipedia.org/wiki/BSD_licenses
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from __future__ import unicode_literals
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import time
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from datetime import tzinfo, timedelta
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ZERO = timedelta(0)
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class FixedOffset(tzinfo):
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"""
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This class describes fixed timezone offsets in hours and minutes
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east from UTC
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"""
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def __init__(self, minutes):
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self.__offset = timedelta(minutes=minutes)
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sign = '+'
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if minutes < 0:
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sign = '-'
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hours, remaining_mins = divmod(abs(minutes), 60)
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self.__name = '%s%02d%02d' % (sign, hours, remaining_mins)
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def utcoffset(self, _):
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return self.__offset
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def tzname(self, _):
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return self.__name
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def dst(self, _):
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return ZERO
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@classmethod
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def for_system(klass):
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"""Return a FixedOffset instance for the current working timezone and
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DST conditions.
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"""
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if time.localtime().tm_isdst and time.daylight:
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offset = time.altzone
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else:
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offset = time.timezone
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return klass(-offset // 60)
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