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58 lines
1.9 KiB
58 lines
1.9 KiB
# Copyright 2020 Camptocamp SA
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# License AGPL-3.0 or later (https://www.gnu.org/licenses/agpl)
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from datetime import date, datetime
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import pytz
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UTC_TZ = pytz.timezone("UTC")
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def tz_to_tz_naive_datetime(from_tz, to_tz, date_time):
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"""
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Convert tz-naive datetime from a specifc tz to a tz-naive datetime of a specific tz
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:param from_tz: pytz.timezone object or tz selection value
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:param to_tz: pytz.timezone object or tz selection value
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:param date_time: tz-naive datetime.datetime object
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:return: tz-naive datetime.datetime object
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"""
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if isinstance(from_tz, str):
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from_tz = pytz.timezone(from_tz)
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if isinstance(to_tz, str):
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to_tz = pytz.timezone(to_tz)
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return from_tz.localize(date_time).astimezone(to_tz).replace(tzinfo=None)
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def tz_to_utc_naive_datetime(from_tz, date_time):
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return tz_to_tz_naive_datetime(from_tz, UTC_TZ, date_time)
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def utc_to_tz_naive_datetime(to_tz, date_time):
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return tz_to_tz_naive_datetime(UTC_TZ, to_tz, date_time)
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def tz_to_tz_time(from_tz, to_tz, time, base_date=None):
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"""
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Convert datetime.time from a specific tz to a datetime.time of a specific tz
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:param from_tz: pytz.timezone object or tz selection value
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:param to_tz: pytz.timezone object or tz selection value
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:param time: datetime.time object
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:param base_date: OPTIONAL datetime.date or datetime.datetime object to use
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for the conversion
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:return: datetime.time object
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"""
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# Combine time with a date
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if base_date is None:
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base_date = date.today()
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date_time = datetime.combine(base_date, time)
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new_date_time = tz_to_tz_naive_datetime(from_tz, to_tz, date_time)
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return new_date_time.time()
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def tz_to_utc_time(from_tz, time, base_date=None):
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return tz_to_tz_time(from_tz, UTC_TZ, time, base_date=base_date)
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def utc_to_tz_time(to_tz, time, base_date=None):
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return tz_to_tz_time(UTC_TZ, to_tz, time, base_date=base_date)
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