Python LocalTimezone.utcoffset方法代码示例

# 需要导入模块: from django.utils.tzinfo import LocalTimezone [as 别名]
# 或者: from django.utils.tzinfo.LocalTimezone import utcoffset [as 别名]
def new_date(old_date, reverse=False):
    if old_date is None:
        return None
    tz = LocalTimezone(old_date)
    offset = tz.utcoffset(old_date)
    if reverse:
        offset = -offset
    return old_date - offset

# 需要导入模块: from django.utils.tzinfo import LocalTimezone [as 别名]
# 或者: from django.utils.tzinfo.LocalTimezone import utcoffset [as 别名]

#.........这里部分代码省略.........
        return MONTHS_AP[self.data.month]

    def O(self):
        "Difference to Greenwich time in hours; e.g. '+0200'"
        seconds = self.Z()
        return u"%+03d%02d" % (seconds // 3600, (seconds // 60) % 60)

    def r(self):
        "RFC 2822 formatted date; e.g. 'Thu, 21 Dec 2000 16:01:07 +0200'"
        timestamp = time.mktime(self.data.timetuple())
        return formatdate(timestamp, True)

    def S(self):
        "English ordinal suffix for the day of the month, 2 characters; i.e. 'st', 'nd', 'rd' or 'th'"
        if self.data.day in (11, 12, 13): # Special case
            return u'th'
        last = self.data.day % 10
        if last == 1:
            return u'st'
        if last == 2:
            return u'nd'
        if last == 3:
            return u'rd'
        return u'th'

    def t(self):
        "Number of days in the given month; i.e. '28' to '31'"
        return u'%02d' % calendar.monthrange(self.data.year, self.data.month)[1]

    def T(self):
        "Time zone of this machine; e.g. 'EST' or 'MDT'"
        name = self.timezone and self.timezone.tzname(self.data) or None
        if name is None:
            name = self.format('O')
        return unicode(name)

    def U(self):
        "Seconds since the Unix epoch (January 1 1970 00:00:00 GMT)"
        if getattr(self.data, 'tzinfo', None):
            return int(calendar.timegm(self.data.utctimetuple()))
        else:
            return int(time.mktime(self.data.timetuple()))

    def w(self):
        "Day of the week, numeric, i.e. '0' (Sunday) to '6' (Saturday)"
        return (self.data.weekday() + 1) % 7

    def W(self):
        "ISO-8601 week number of year, weeks starting on Monday"
        # Algorithm from http://www.personal.ecu.edu/mccartyr/ISOwdALG.txt
        week_number = None
        jan1_weekday = self.data.replace(month=1, day=1).weekday() + 1
        weekday = self.data.weekday() + 1
        day_of_year = self.z()
        if day_of_year <= (8 - jan1_weekday) and jan1_weekday > 4:
            if jan1_weekday == 5 or (jan1_weekday == 6 and calendar.isleap(self.data.year-1)):
                week_number = 53
            else:
                week_number = 52
        else:
            if calendar.isleap(self.data.year):
                i = 366
            else:
                i = 365
            if (i - day_of_year) < (4 - weekday):
                week_number = 1
            else:
                j = day_of_year + (7 - weekday) + (jan1_weekday - 1)
                week_number = j // 7
                if jan1_weekday > 4:
                    week_number -= 1
        return week_number

    def y(self):
        "Year, 2 digits; e.g. '99'"
        return unicode(self.data.year)[2:]

    def Y(self):
        "Year, 4 digits; e.g. '1999'"
        return self.data.year

    def z(self):
        "Day of the year; i.e. '0' to '365'"
        doy = self.year_days[self.data.month] + self.data.day
        if self.L() and self.data.month > 2:
            doy += 1
        return doy

    def Z(self):
        """
        Time zone offset in seconds (i.e. '-43200' to '43200'). The offset for
        timezones west of UTC is always negative, and for those east of UTC is
        always positive.
        """
        if not self.timezone:
            return 0
        offset = self.timezone.utcoffset(self.data)
        # Only days can be negative, so negative offsets have days=-1 and
        # seconds positive. Positive offsets have days=0
        return offset.days * 86400 + offset.seconds

# 需要导入模块: from django.utils.tzinfo import LocalTimezone [as 别名]
# 或者: from django.utils.tzinfo.LocalTimezone import utcoffset [as 别名]

#.........这里部分代码省略.........
        "Difference to Greenwich time in hours; e.g. '+0200', '-0430'"
        seconds = self.Z()
        sign = '-' if seconds < 0 else '+'
        seconds = abs(seconds)
        return u"%s%02d%02d" % (sign, seconds // 3600, (seconds // 60) % 60)

    def r(self):
        "RFC 2822 formatted date; e.g. 'Thu, 21 Dec 2000 16:01:07 +0200'"
        return self.format('D, j M Y H:i:s O')

    def S(self):
        "English ordinal suffix for the day of the month, 2 characters; i.e. 'st', 'nd', 'rd' or 'th'"
        if self.data.day in (11, 12, 13): # Special case
            return u'th'
        last = self.data.day % 10
        if last == 1:
            return u'st'
        if last == 2:
            return u'nd'
        if last == 3:
            return u'rd'
        return u'th'

    def t(self):
        "Number of days in the given month; i.e. '28' to '31'"
        return u'%02d' % calendar.monthrange(self.data.year, self.data.month)[1]

    def T(self):
        "Time zone of this machine; e.g. 'EST' or 'MDT'"
        name = self.timezone and self.timezone.tzname(self.data) or None
        if name is None:
            name = self.format('O')
        return unicode(name)

    def U(self):
        "Seconds since the Unix epoch (January 1 1970 00:00:00 GMT)"
        if isinstance(self.data, datetime.datetime) and is_aware(self.data):
            return int(calendar.timegm(self.data.utctimetuple()))
        else:
            return int(time.mktime(self.data.timetuple()))

    def w(self):
        "Day of the week, numeric, i.e. '0' (Sunday) to '6' (Saturday)"
        return (self.data.weekday() + 1) % 7

    def W(self):
        "ISO-8601 week number of year, weeks starting on Monday"
        # Algorithm from http://www.personal.ecu.edu/mccartyr/ISOwdALG.txt
        week_number = None
        jan1_weekday = self.data.replace(month=1, day=1).weekday() + 1
        weekday = self.data.weekday() + 1
        day_of_year = self.z()
        if day_of_year <= (8 - jan1_weekday) and jan1_weekday > 4:
            if jan1_weekday == 5 or (jan1_weekday == 6 and calendar.isleap(self.data.year-1)):
                week_number = 53
            else:
                week_number = 52
        else:
            if calendar.isleap(self.data.year):
                i = 366
            else:
                i = 365
            if (i - day_of_year) < (4 - weekday):
                week_number = 1
            else:
                j = day_of_year + (7 - weekday) + (jan1_weekday - 1)
                week_number = j // 7
                if jan1_weekday > 4:
                    week_number -= 1
        return week_number

    def y(self):
        "Year, 2 digits; e.g. '99'"
        return unicode(self.data.year)[2:]

    def Y(self):
        "Year, 4 digits; e.g. '1999'"
        return self.data.year

    def z(self):
        "Day of the year; i.e. '0' to '365'"
        doy = self.year_days[self.data.month] + self.data.day
        if self.L() and self.data.month > 2:
            doy += 1
        return doy

    def Z(self):
        """
        Time zone offset in seconds (i.e. '-43200' to '43200'). The offset for
        timezones west of UTC is always negative, and for those east of UTC is
        always positive.
        """
        if not self.timezone:
            return 0
        offset = self.timezone.utcoffset(self.data)
        # `offset` is a datetime.timedelta. For negative values (to the west of
        # UTC) only days can be negative (days=-1) and seconds are always
        # positive. e.g. UTC-1 -> timedelta(days=-1, seconds=82800, microseconds=0)
        # Positive offsets have days=0
        return offset.days * 86400 + offset.seconds

# 需要导入模块: from django.utils.tzinfo import LocalTimezone [as 别名]
# 或者: from django.utils.tzinfo.LocalTimezone import utcoffset [as 别名]

#.........这里部分代码省略.........
        Examples: '1', '1:30', '2:05', '2'
        Proprietary extension.
        """
        if self.data.minute == 0:
            return self.g()
        return "%s:%s" % (self.g(), self.i())

    def g(self):
        "Hour, 12-hour format without leading zeros; i.e. '1' to '12'"
        if self.data.hour == 0:
            return 12
        if self.data.hour > 12:
            return self.data.hour - 12
        return self.data.hour

    def G(self):
        "Hour, 24-hour format without leading zeros; i.e. '0' to '23'"
        return self.data.hour

    def h(self):
        "Hour, 12-hour format; i.e. '01' to '12'"
        return "%02d" % self.g()

    def H(self):
        "Hour, 24-hour format; i.e. '00' to '23'"
        return "%02d" % self.G()

    def i(self):
        "Minutes; i.e. '00' to '59'"
        return "%02d" % self.data.minute

    def O(self):
        """
        Difference to Greenwich time in hours; e.g. '+0200', '-0430'.

        If timezone information is not available, this method returns
        an empty string.
        """
        if not self.timezone:
            return ""

        seconds = self.Z()
        sign = "-" if seconds < 0 else "+"
        seconds = abs(seconds)
        return "%s%02d%02d" % (sign, seconds // 3600, (seconds // 60) % 60)

    def P(self):
        """
        Time, in 12-hour hours, minutes and 'a.m.'/'p.m.', with minutes left off
        if they're zero and the strings 'midnight' and 'noon' if appropriate.
        Examples: '1 a.m.', '1:30 p.m.', 'midnight', 'noon', '12:30 p.m.'
        Proprietary extension.
        """
        if self.data.minute == 0 and self.data.hour == 0:
            return _("midnight")
        if self.data.minute == 0 and self.data.hour == 12:
            return _("noon")
        return "%s %s" % (self.f(), self.a())

    def s(self):
        "Seconds; i.e. '00' to '59'"
        return "%02d" % self.data.second

    def T(self):
        """
        Time zone of this machine; e.g. 'EST' or 'MDT'.

        If timezone information is not available, this method returns
        an empty string.
        """
        if not self.timezone:
            return ""

        name = self.timezone.tzname(self.data) if self.timezone else None
        if name is None:
            name = self.format("O")
        return six.text_type(name)

    def u(self):
        "Microseconds; i.e. '000000' to '999999'"
        return "%06d" % self.data.microsecond

    def Z(self):
        """
        Time zone offset in seconds (i.e. '-43200' to '43200'). The offset for
        timezones west of UTC is always negative, and for those east of UTC is
        always positive.

        If timezone information is not available, this method returns
        an empty string.
        """
        if not self.timezone:
            return ""

        offset = self.timezone.utcoffset(self.data)
        # `offset` is a datetime.timedelta. For negative values (to the west of
        # UTC) only days can be negative (days=-1) and seconds are always
        # positive. e.g. UTC-1 -> timedelta(days=-1, seconds=82800, microseconds=0)
        # Positive offsets have days=0
        return offset.days * 86400 + offset.seconds