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54 lines
1.8 KiB
Python
54 lines
1.8 KiB
Python
from __future__ import absolute_import
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import datetime
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import calendar
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from django.utils.timezone import utc
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def is_timezone_aware(datetime_object):
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# type: (datetime.datetime) -> bool
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return datetime_object.tzinfo is not None
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def datetime_to_UTC(datetime_object):
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# type: (datetime.datetime) -> datetime.datetime
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if is_timezone_aware(datetime_object):
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return datetime_object.astimezone(utc)
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return datetime_object.replace(tzinfo=utc)
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def floor_to_hour(datetime_object):
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# type: (datetime.datetime) -> datetime.datetime
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return datetime.datetime(*datetime_object.timetuple()[:4]) \
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.replace(tzinfo=datetime_object.tzinfo)
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def floor_to_day(datetime_object):
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# type: (datetime.datetime) -> datetime.datetime
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return datetime.datetime(*datetime_object.timetuple()[:3]) \
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.replace(tzinfo=datetime_object.tzinfo)
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def ceiling_to_hour(datetime_object):
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# type: (datetime.datetime) -> datetime.datetime
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floor = floor_to_hour(datetime_object)
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if floor == datetime_object:
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return floor
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return floor + datetime.timedelta(hours=1)
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def ceiling_to_day(datetime_object):
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# type: (datetime.datetime) -> datetime.datetime
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floor = floor_to_day(datetime_object)
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if floor == datetime_object:
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return floor
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return floor + datetime.timedelta(days=1)
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def timestamp_to_datetime(timestamp):
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# type: (float) -> datetime.datetime
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return datetime.datetime.utcfromtimestamp(float(timestamp)).replace(tzinfo=utc)
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def datetime_to_timestamp(datetime_object):
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# type: (datetime.datetime) -> int
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return calendar.timegm(datetime_object.timetuple())
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def datetime_to_string(datetime_object):
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# type: (datetime.datetime) -> str
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assert is_timezone_aware(datetime_object)
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date_string = datetime_object.strftime('%Y-%m-%d %H:%M:%S%z')
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return date_string
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