Python datetime.datetime.astimezone() Examples

The following are 30 code examples of datetime.datetime.astimezone(). You can vote up the ones you like or vote down the ones you don't like, and go to the original project or source file by following the links above each example. You may also want to check out all available functions/classes of the module datetime.datetime , or try the search function .
Example #1
Source File: tzinfo.py    From pySINDy with MIT License 5 votes vote down vote up 
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)
Example #2
Source File: tzinfo.py    From bazarr with GNU General Public License v3.0 5 votes vote down vote up 
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)
Example #3
Source File: tzinfo.py    From Carnets with BSD 3-Clause "New" or "Revised" License 5 votes vote down vote up 
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)
Example #4
Source File: tzinfo.py    From script.tvguide.fullscreen with GNU General Public License v2.0 5 votes vote down vote up 
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)
Example #5
Source File: tzinfo.py    From auto-alt-text-lambda-api with MIT License 5 votes vote down vote up 
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)
Example #6
Source File: tz.py    From aws-builders-fair-projects with Apache License 2.0 5 votes vote down vote up 
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
Example #7
Source File: tzinfo.py    From faces with GNU General Public License v2.0 5 votes vote down vote up 
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)
Example #8
Source File: tz.py    From Mastering-Elasticsearch-7.0 with MIT License 5 votes vote down vote up 
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
Example #9
Source File: tz.py    From deepWordBug with Apache License 2.0 5 votes vote down vote up 
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
Example #10
Source File: tz.py    From pipenv with MIT License 5 votes vote down vote up 
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
Example #11
Source File: tzinfo.py    From pmatic with GNU General Public License v2.0 5 votes vote down vote up 
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)
Example #12
Source File: tzinfo.py    From komodo-wakatime with BSD 3-Clause "New" or "Revised" License 5 votes vote down vote up 
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)
Example #13
Source File: tz.py    From GraphicDesignPatternByPython with MIT License 5 votes vote down vote up 
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
Example #14
Source File: tzinfo.py    From predictive-maintenance-using-machine-learning with Apache License 2.0 5 votes vote down vote up 
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)
Example #15
Source File: tzinfo.py    From Splunking-Crime with GNU Affero General Public License v3.0 5 votes vote down vote up 
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)
Example #16
Source File: tzinfo.py    From elasticintel with GNU General Public License v3.0 5 votes vote down vote up 
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)
Example #17
Source File: dates.py    From pySINDy with MIT License 5 votes vote down vote up 
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
Example #18
Source File: dates.py    From pySINDy with MIT License 5 votes vote down vote up 
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
Example #19
Source File: tzinfo.py    From telegram-robot-rss with Mozilla Public License 2.0 5 votes vote down vote up 
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)
Example #20
Source File: tzinfo.py    From python2017 with MIT License 5 votes vote down vote up 
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)
Example #21
Source File: tz.py    From bash-lambda-layer with MIT License 5 votes vote down vote up 
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
Example #22
Source File: tzinfo.py    From Hands-On-Application-Development-with-PyCharm with MIT License 5 votes vote down vote up 
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)
Example #23
Source File: tzinfo.py    From ImageFusion with MIT License 5 votes vote down vote up 
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)
Example #24
Source File: tzinfo.py    From python with Apache License 2.0 5 votes vote down vote up 
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)
Example #25
Source File: models.py    From opentaps_seas with GNU Lesser General Public License v3.0 5 votes vote down vote up 
def datetime_to_string(datetime, tz=None):
    if not datetime:
        return None
    if tz:
        datetime = datetime.astimezone(tz)
    return datetime.strftime(DATETIME_FORMAT)
Example #26
Source File: tz.py    From AWS-Transit-Gateway-Demo-MultiAccount with MIT License 5 votes vote down vote up 
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
Example #27
Source File: models.py    From opentaps_seas with GNU Lesser General Public License v3.0 5 votes vote down vote up 
def date_to_string(datetime, tz=None):
    if not datetime:
        return None
    if tz:
        datetime = datetime.astimezone(tz)
    return datetime.strftime(DATE_FORMAT)
Example #28
Source File: tz.py    From AWS-Transit-Gateway-Demo-MultiAccount with MIT License 5 votes vote down vote up 
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
Example #29
Source File: tz.py    From aws-extender with MIT License 5 votes vote down vote up 
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
Example #30
Source File: tzinfo.py    From pyRevit with GNU General Public License v3.0 5 votes vote down vote up 
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)