xtquant.xtbson.bson36.tz_util

Timezone related utilities for BSON.

View Source

 1# Copyright 2010-2015 MongoDB, Inc.
 2#
 3# Licensed under the Apache License, Version 2.0 (the "License");
 4# you may not use this file except in compliance with the License.
 5# You may obtain a copy of the License at
 6#
 7# http://www.apache.org/licenses/LICENSE-2.0
 8#
 9# Unless required by applicable law or agreed to in writing, software
10# distributed under the License is distributed on an "AS IS" BASIS,
11# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
12# See the License for the specific language governing permissions and
13# limitations under the License.
14
15"""Timezone related utilities for BSON."""
16
17from datetime import timedelta, tzinfo
18
19ZERO = timedelta(0)
20
21
22class FixedOffset(tzinfo):
23    """Fixed offset timezone, in minutes east from UTC.
24
25    Implementation based from the Python `standard library documentation
26    <http://docs.python.org/library/datetime.html#tzinfo-objects>`_.
27    Defining __getinitargs__ enables pickling / copying.
28    """
29
30    def __init__(self, offset, name):
31        if isinstance(offset, timedelta):
32            self.__offset = offset
33        else:
34            self.__offset = timedelta(minutes=offset)
35        self.__name = name
36
37    def __getinitargs__(self):
38        return self.__offset, self.__name
39
40    def utcoffset(self, dt):
41        return self.__offset
42
43    def tzname(self, dt):
44        return self.__name
45
46    def dst(self, dt):
47        return ZERO
48
49
50utc = FixedOffset(0, "UTC")
51"""Fixed offset timezone representing UTC."""

ZERO = datetime.timedelta(0)

class FixedOffset(datetime.tzinfo): View Source

23class FixedOffset(tzinfo):
24    """Fixed offset timezone, in minutes east from UTC.
25
26    Implementation based from the Python `standard library documentation
27    <http://docs.python.org/library/datetime.html#tzinfo-objects>`_.
28    Defining __getinitargs__ enables pickling / copying.
29    """
30
31    def __init__(self, offset, name):
32        if isinstance(offset, timedelta):
33            self.__offset = offset
34        else:
35            self.__offset = timedelta(minutes=offset)
36        self.__name = name
37
38    def __getinitargs__(self):
39        return self.__offset, self.__name
40
41    def utcoffset(self, dt):
42        return self.__offset
43
44    def tzname(self, dt):
45        return self.__name
46
47    def dst(self, dt):
48        return ZERO

Fixed offset timezone, in minutes east from UTC.

Implementation based from the Python standard library documentation . Defining __getinitargs__ enables pickling / copying.

FixedOffset(offset, name) View Source

31    def __init__(self, offset, name):
32        if isinstance(offset, timedelta):
33            self.__offset = offset
34        else:
35            self.__offset = timedelta(minutes=offset)
36        self.__name = name

def utcoffset(self, dt): View Source

41    def utcoffset(self, dt):
42        return self.__offset

datetime -> timedelta showing offset from UTC, negative values indicating West of UTC

def tzname(self, dt): View Source

44    def tzname(self, dt):
45        return self.__name

datetime -> string name of time zone.

def dst(self, dt): View Source

47    def dst(self, dt):
48        return ZERO

datetime -> DST offset as timedelta positive east of UTC.

Inherited Members

datetime.tzinfo: fromutc

utc = <xtquant.xtbson.bson36.tz_util.FixedOffset object>

Fixed offset timezone representing UTC.