本文整理匯總了Python中datetime.datetime.astimezone方法的典型用法代碼示例。如果您正苦於以下問題:Python datetime.astimezone方法的具體用法?Python datetime.astimezone怎麽用?Python datetime.astimezone使用的例子?那麽, 這裏精選的方法代碼示例或許可以為您提供幫助。您也可以進一步了解該方法所在類datetime.datetime
的用法示例。
在下文中一共展示了datetime.astimezone方法的6個代碼示例,這些例子默認根據受歡迎程度排序。您可以為喜歡或者感覺有用的代碼點讚,您的評價將有助於係統推薦出更棒的Python代碼示例。
示例1: _get_time
# 需要導入模塊: from datetime import datetime [as 別名]
# 或者: from datetime.datetime import astimezone [as 別名]
def _get_time(time, tzinfo=None):
"""
Get a timezoned time from a given instant.
.. warning:: The return values of this function may depend on the system clock.
:param time: time, datetime or None
:rtype: time
"""
if time is None:
time = datetime.utcnow()
elif isinstance(time, number_types):
time = datetime.utcfromtimestamp(time)
if time.tzinfo is None:
time = time.replace(tzinfo=UTC)
if isinstance(time, datetime):
if tzinfo is not None:
time = time.astimezone(tzinfo)
if hasattr(tzinfo, 'normalize'): # pytz
time = tzinfo.normalize(time)
time = time.timetz()
elif tzinfo is not None:
time = time.replace(tzinfo=tzinfo)
return time
示例2: datetime_exists
# 需要導入模塊: from datetime import datetime [as 別名]
# 或者: from datetime.datetime import astimezone [as 別名]
def datetime_exists(dt, tz=None):
"""
Given a datetime and a time zone, determine whether or not a given datetime
would fall in a gap.
:param dt:
A :class:`datetime.datetime` (whose time zone will be ignored if ``tz``
is provided.)
:param tz:
A :class:`datetime.tzinfo` with support for the ``fold`` attribute. If
``None`` or not provided, the datetime's own time zone will be used.
:return:
Returns a boolean value whether or not the "wall time" exists in
``tz``.
.. versionadded:: 2.7.0
"""
if tz is None:
if dt.tzinfo is None:
raise ValueError('Datetime is naive and no time zone provided.')
tz = dt.tzinfo
dt = dt.replace(tzinfo=None)
# This is essentially a test of whether or not the datetime can survive
# a round trip to UTC.
dt_rt = dt.replace(tzinfo=tz).astimezone(tzutc()).astimezone(tz)
dt_rt = dt_rt.replace(tzinfo=None)
return dt == dt_rt
示例3: normalize
# 需要導入模塊: from datetime import datetime [as 別名]
# 或者: from datetime.datetime import astimezone [as 別名]
def normalize(self, dt, is_dst=False):
'''Correct the timezone information on the given datetime.
This is normally a no-op, as StaticTzInfo timezones never have
ambiguous cases to correct:
>>> from pytz import timezone
>>> gmt = timezone('GMT')
>>> isinstance(gmt, StaticTzInfo)
True
>>> dt = datetime(2011, 5, 8, 1, 2, 3, tzinfo=gmt)
>>> gmt.normalize(dt) is dt
True
The supported method of converting between timezones is to use
datetime.astimezone(). Currently normalize() also works:
>>> la = timezone('America/Los_Angeles')
>>> dt = la.localize(datetime(2011, 5, 7, 1, 2, 3))
>>> fmt = '%Y-%m-%d %H:%M:%S %Z (%z)'
>>> gmt.normalize(dt).strftime(fmt)
'2011-05-07 08:02:03 GMT (+0000)'
'''
if dt.tzinfo is self:
return dt
if dt.tzinfo is None:
raise ValueError('Naive time - no tzinfo set')
return dt.astimezone(self)
示例4: datetime_exists
# 需要導入模塊: from datetime import datetime [as 別名]
# 或者: from datetime.datetime import astimezone [as 別名]
def datetime_exists(dt, tz=None):
"""
Given a datetime and a time zone, determine whether or not a given datetime
would fall in a gap.
:param dt:
A :class:`datetime.datetime` (whose time zone will be ignored if ``tz``
is provided.)
:param tz:
A :class:`datetime.tzinfo` with support for the ``fold`` attribute. If
``None`` or not provided, the datetime's own time zone will be used.
:return:
Returns a boolean value whether or not the "wall time" exists in
``tz``.
.. versionadded:: 2.7.0
"""
if tz is None:
if dt.tzinfo is None:
raise ValueError('Datetime is naive and no time zone provided.')
tz = dt.tzinfo
dt = dt.replace(tzinfo=None)
# This is essentially a test of whether or not the datetime can survive
# a round trip to UTC.
dt_rt = dt.replace(tzinfo=tz).astimezone(UTC).astimezone(tz)
dt_rt = dt_rt.replace(tzinfo=None)
return dt == dt_rt
示例5: _ensure_datetime_tzinfo
# 需要導入模塊: from datetime import datetime [as 別名]
# 或者: from datetime.datetime import astimezone [as 別名]
def _ensure_datetime_tzinfo(datetime, tzinfo=None):
"""
Ensure the datetime passed has an attached tzinfo.
If the datetime is tz-naive to begin with, UTC is attached.
If a tzinfo is passed in, the datetime is normalized to that timezone.
>>> _ensure_datetime_tzinfo(datetime(2015, 1, 1)).tzinfo.zone
'UTC'
>>> tz = get_timezone("Europe/Stockholm")
>>> _ensure_datetime_tzinfo(datetime(2015, 1, 1, 13, 15, tzinfo=UTC), tzinfo=tz).hour
14
:param datetime: Datetime to augment.
:param tzinfo: Optional tznfo.
:return: datetime with tzinfo
:rtype: datetime
"""
if datetime.tzinfo is None:
datetime = datetime.replace(tzinfo=UTC)
if tzinfo is not None:
datetime = datetime.astimezone(get_timezone(tzinfo))
if hasattr(tzinfo, 'normalize'): # pytz
datetime = tzinfo.normalize(datetime)
return datetime
示例6: date_to_string
# 需要導入模塊: from datetime import datetime [as 別名]
# 或者: from datetime.datetime import astimezone [as 別名]
def date_to_string(datetime, tz=None):
if not datetime:
return None
if tz:
datetime = datetime.astimezone(tz)
return datetime.strftime(DATE_FORMAT)