572 lines
16 KiB
Python
572 lines
16 KiB
Python
|
# util/compat.py
|
||
|
|
# Copyright (C) 2005-2020 the SQLAlchemy authors and contributors
|
||
|
|
# <see AUTHORS file>
|
||
|
|
#
|
||
|
|
# This module is part of SQLAlchemy and is released under
|
||
|
|
# the MIT License: http://www.opensource.org/licenses/mit-license.php
|
||
|
|
|
||
|
|
"""Handle Python version/platform incompatibilities."""
|
||
|
|
|
||
|
|
import collections
|
||
|
|
import contextlib
|
||
|
|
import inspect
|
||
|
|
import operator
|
||
|
|
import sys
|
||
|
|
|
||
|
|
|
||
|
|
py36 = sys.version_info >= (3, 6)
|
||
|
|
py33 = sys.version_info >= (3, 3)
|
||
|
|
py35 = sys.version_info >= (3, 5)
|
||
|
|
py32 = sys.version_info >= (3, 2)
|
||
|
|
py3k = sys.version_info >= (3, 0)
|
||
|
|
py2k = sys.version_info < (3, 0)
|
||
|
|
py265 = sys.version_info >= (2, 6, 5)
|
||
|
|
jython = sys.platform.startswith("java")
|
||
|
|
pypy = hasattr(sys, "pypy_version_info")
|
||
|
|
|
||
|
|
win32 = sys.platform.startswith("win")
|
||
|
|
cpython = not pypy and not jython # TODO: something better for this ?
|
||
|
|
|
||
|
|
contextmanager = contextlib.contextmanager
|
||
|
|
dottedgetter = operator.attrgetter
|
||
|
|
namedtuple = collections.namedtuple
|
||
|
|
next = next # noqa
|
||
|
|
|
||
|
|
FullArgSpec = collections.namedtuple(
|
||
|
|
"FullArgSpec",
|
||
|
|
[
|
||
|
|
"args",
|
||
|
|
"varargs",
|
||
|
|
"varkw",
|
||
|
|
"defaults",
|
||
|
|
"kwonlyargs",
|
||
|
|
"kwonlydefaults",
|
||
|
|
"annotations",
|
||
|
|
],
|
||
|
|
)
|
||
|
|
|
||
|
|
try:
|
||
|
|
import threading
|
||
|
|
except ImportError:
|
||
|
|
import dummy_threading as threading # noqa
|
||
|
|
|
||
|
|
|
||
|
|
# work around http://bugs.python.org/issue2646
|
||
|
|
if py265:
|
||
|
|
safe_kwarg = lambda arg: arg # noqa
|
||
|
|
else:
|
||
|
|
safe_kwarg = str
|
||
|
|
|
||
|
|
|
||
|
|
def inspect_getfullargspec(func):
|
||
|
|
"""Fully vendored version of getfullargspec from Python 3.3."""
|
||
|
|
|
||
|
|
if inspect.ismethod(func):
|
||
|
|
func = func.__func__
|
||
|
|
if not inspect.isfunction(func):
|
||
|
|
raise TypeError("{!r} is not a Python function".format(func))
|
||
|
|
|
||
|
|
co = func.__code__
|
||
|
|
if not inspect.iscode(co):
|
||
|
|
raise TypeError("{!r} is not a code object".format(co))
|
||
|
|
|
||
|
|
nargs = co.co_argcount
|
||
|
|
names = co.co_varnames
|
||
|
|
nkwargs = co.co_kwonlyargcount if py3k else 0
|
||
|
|
args = list(names[:nargs])
|
||
|
|
kwonlyargs = list(names[nargs : nargs + nkwargs])
|
||
|
|
|
||
|
|
nargs += nkwargs
|
||
|
|
varargs = None
|
||
|
|
if co.co_flags & inspect.CO_VARARGS:
|
||
|
|
varargs = co.co_varnames[nargs]
|
||
|
|
nargs = nargs + 1
|
||
|
|
varkw = None
|
||
|
|
if co.co_flags & inspect.CO_VARKEYWORDS:
|
||
|
|
varkw = co.co_varnames[nargs]
|
||
|
|
|
||
|
|
return FullArgSpec(
|
||
|
|
args,
|
||
|
|
varargs,
|
||
|
|
varkw,
|
||
|
|
func.__defaults__,
|
||
|
|
kwonlyargs,
|
||
|
|
func.__kwdefaults__ if py3k else None,
|
||
|
|
func.__annotations__ if py3k else {},
|
||
|
|
)
|
||
|
|
|
||
|
|
|
||
|
|
if py3k:
|
||
|
|
import base64
|
||
|
|
import builtins
|
||
|
|
import configparser
|
||
|
|
import itertools
|
||
|
|
import pickle
|
||
|
|
|
||
|
|
from functools import reduce
|
||
|
|
from io import BytesIO as byte_buffer
|
||
|
|
from io import StringIO
|
||
|
|
from itertools import zip_longest
|
||
|
|
from urllib.parse import (
|
||
|
|
quote_plus,
|
||
|
|
unquote_plus,
|
||
|
|
parse_qsl,
|
||
|
|
quote,
|
||
|
|
unquote,
|
||
|
|
)
|
||
|
|
|
||
|
|
string_types = (str,)
|
||
|
|
binary_types = (bytes,)
|
||
|
|
binary_type = bytes
|
||
|
|
text_type = str
|
||
|
|
int_types = (int,)
|
||
|
|
iterbytes = iter
|
||
|
|
|
||
|
|
itertools_filterfalse = itertools.filterfalse
|
||
|
|
itertools_filter = filter
|
||
|
|
itertools_imap = map
|
||
|
|
|
||
|
|
exec_ = getattr(builtins, "exec")
|
||
|
|
import_ = getattr(builtins, "__import__")
|
||
|
|
print_ = getattr(builtins, "print")
|
||
|
|
|
||
|
|
def b(s):
|
||
|
|
return s.encode("latin-1")
|
||
|
|
|
||
|
|
def b64decode(x):
|
||
|
|
return base64.b64decode(x.encode("ascii"))
|
||
|
|
|
||
|
|
def b64encode(x):
|
||
|
|
return base64.b64encode(x).decode("ascii")
|
||
|
|
|
||
|
|
def decode_backslashreplace(text, encoding):
|
||
|
|
return text.decode(encoding, errors="backslashreplace")
|
||
|
|
|
||
|
|
def cmp(a, b):
|
||
|
|
return (a > b) - (a < b)
|
||
|
|
|
||
|
|
def raise_(
|
||
|
|
exception, with_traceback=None, replace_context=None, from_=False
|
||
|
|
):
|
||
|
|
r"""implement "raise" with cause support.
|
||
|
|
|
||
|
|
:param exception: exception to raise
|
||
|
|
:param with_traceback: will call exception.with_traceback()
|
||
|
|
:param replace_context: an as-yet-unsupported feature. This is
|
||
|
|
an exception object which we are "replacing", e.g., it's our
|
||
|
|
"cause" but we don't want it printed. Basically just what
|
||
|
|
``__suppress_context__`` does but we don't want to suppress
|
||
|
|
the enclosing context, if any. So for now we make it the
|
||
|
|
cause.
|
||
|
|
:param from\_: the cause. this actually sets the cause and doesn't
|
||
|
|
hope to hide it someday.
|
||
|
|
|
||
|
|
"""
|
||
|
|
if with_traceback is not None:
|
||
|
|
exception = exception.with_traceback(with_traceback)
|
||
|
|
|
||
|
|
if from_ is not False:
|
||
|
|
exception.__cause__ = from_
|
||
|
|
elif replace_context is not None:
|
||
|
|
# no good solution here, we would like to have the exception
|
||
|
|
# have only the context of replace_context.__context__ so that the
|
||
|
|
# intermediary exception does not change, but we can't figure
|
||
|
|
# that out.
|
||
|
|
exception.__cause__ = replace_context
|
||
|
|
|
||
|
|
try:
|
||
|
|
raise exception
|
||
|
|
finally:
|
||
|
|
# credit to
|
||
|
|
# https://cosmicpercolator.com/2016/01/13/exception-leaks-in-python-2-and-3/
|
||
|
|
# as the __traceback__ object creates a cycle
|
||
|
|
del exception, replace_context, from_, with_traceback
|
||
|
|
|
||
|
|
def u(s):
|
||
|
|
return s
|
||
|
|
|
||
|
|
def ue(s):
|
||
|
|
return s
|
||
|
|
|
||
|
|
if py32:
|
||
|
|
callable = callable # noqa
|
||
|
|
else:
|
||
|
|
|
||
|
|
def callable(fn): # noqa
|
||
|
|
return hasattr(fn, "__call__")
|
||
|
|
|
||
|
|
|
||
|
|
else:
|
||
|
|
import base64
|
||
|
|
import ConfigParser as configparser # noqa
|
||
|
|
import itertools
|
||
|
|
|
||
|
|
from StringIO import StringIO # noqa
|
||
|
|
from cStringIO import StringIO as byte_buffer # noqa
|
||
|
|
from itertools import izip_longest as zip_longest # noqa
|
||
|
|
from urllib import quote # noqa
|
||
|
|
from urllib import quote_plus # noqa
|
||
|
|
from urllib import unquote # noqa
|
||
|
|
from urllib import unquote_plus # noqa
|
||
|
|
from urlparse import parse_qsl # noqa
|
||
|
|
|
||
|
|
try:
|
||
|
|
import cPickle as pickle
|
||
|
|
except ImportError:
|
||
|
|
import pickle # noqa
|
||
|
|
|
||
|
|
string_types = (basestring,) # noqa
|
||
|
|
binary_types = (bytes,)
|
||
|
|
binary_type = str
|
||
|
|
text_type = unicode # noqa
|
||
|
|
int_types = int, long # noqa
|
||
|
|
|
||
|
|
callable = callable # noqa
|
||
|
|
cmp = cmp # noqa
|
||
|
|
reduce = reduce # noqa
|
||
|
|
|
||
|
|
b64encode = base64.b64encode
|
||
|
|
b64decode = base64.b64decode
|
||
|
|
|
||
|
|
itertools_filterfalse = itertools.ifilterfalse
|
||
|
|
itertools_filter = itertools.ifilter
|
||
|
|
itertools_imap = itertools.imap
|
||
|
|
|
||
|
|
def b(s):
|
||
|
|
return s
|
||
|
|
|
||
|
|
def exec_(func_text, globals_, lcl=None):
|
||
|
|
if lcl is None:
|
||
|
|
exec("exec func_text in globals_")
|
||
|
|
else:
|
||
|
|
exec("exec func_text in globals_, lcl")
|
||
|
|
|
||
|
|
def iterbytes(buf):
|
||
|
|
return (ord(byte) for byte in buf)
|
||
|
|
|
||
|
|
def import_(*args):
|
||
|
|
if len(args) == 4:
|
||
|
|
args = args[0:3] + ([str(arg) for arg in args[3]],)
|
||
|
|
return __import__(*args)
|
||
|
|
|
||
|
|
def print_(*args, **kwargs):
|
||
|
|
fp = kwargs.pop("file", sys.stdout)
|
||
|
|
if fp is None:
|
||
|
|
return
|
||
|
|
for arg in enumerate(args):
|
||
|
|
if not isinstance(arg, basestring): # noqa
|
||
|
|
arg = str(arg)
|
||
|
|
fp.write(arg)
|
||
|
|
|
||
|
|
def u(s):
|
||
|
|
# this differs from what six does, which doesn't support non-ASCII
|
||
|
|
# strings - we only use u() with
|
||
|
|
# literal source strings, and all our source files with non-ascii
|
||
|
|
# in them (all are tests) are utf-8 encoded.
|
||
|
|
return unicode(s, "utf-8") # noqa
|
||
|
|
|
||
|
|
def ue(s):
|
||
|
|
return unicode(s, "unicode_escape") # noqa
|
||
|
|
|
||
|
|
def decode_backslashreplace(text, encoding):
|
||
|
|
try:
|
||
|
|
return text.decode(encoding)
|
||
|
|
except UnicodeDecodeError:
|
||
|
|
# regular "backslashreplace" for an incompatible encoding raises:
|
||
|
|
# "TypeError: don't know how to handle UnicodeDecodeError in
|
||
|
|
# error callback"
|
||
|
|
return repr(text)[1:-1].decode()
|
||
|
|
|
||
|
|
def safe_bytestring(text):
|
||
|
|
# py2k only
|
||
|
|
if not isinstance(text, string_types):
|
||
|
|
return unicode(text).encode("ascii", errors="backslashreplace")
|
||
|
|
elif isinstance(text, unicode):
|
||
|
|
return text.encode("ascii", errors="backslashreplace")
|
||
|
|
else:
|
||
|
|
return text
|
||
|
|
|
||
|
|
exec(
|
||
|
|
"def raise_(exception, with_traceback=None, replace_context=None, "
|
||
|
|
"from_=False):\n"
|
||
|
|
" if with_traceback:\n"
|
||
|
|
" raise type(exception), exception, with_traceback\n"
|
||
|
|
" else:\n"
|
||
|
|
" raise exception\n"
|
||
|
|
)
|
||
|
|
|
||
|
|
|
||
|
|
if py35:
|
||
|
|
|
||
|
|
def _formatannotation(annotation, base_module=None):
|
||
|
|
"""vendored from python 3.7
|
||
|
|
"""
|
||
|
|
|
||
|
|
if getattr(annotation, "__module__", None) == "typing":
|
||
|
|
return repr(annotation).replace("typing.", "")
|
||
|
|
if isinstance(annotation, type):
|
||
|
|
if annotation.__module__ in ("builtins", base_module):
|
||
|
|
return annotation.__qualname__
|
||
|
|
return annotation.__module__ + "." + annotation.__qualname__
|
||
|
|
return repr(annotation)
|
||
|
|
|
||
|
|
def inspect_formatargspec(
|
||
|
|
args,
|
||
|
|
varargs=None,
|
||
|
|
varkw=None,
|
||
|
|
defaults=None,
|
||
|
|
kwonlyargs=(),
|
||
|
|
kwonlydefaults={},
|
||
|
|
annotations={},
|
||
|
|
formatarg=str,
|
||
|
|
formatvarargs=lambda name: "*" + name,
|
||
|
|
formatvarkw=lambda name: "**" + name,
|
||
|
|
formatvalue=lambda value: "=" + repr(value),
|
||
|
|
formatreturns=lambda text: " -> " + text,
|
||
|
|
formatannotation=_formatannotation,
|
||
|
|
):
|
||
|
|
"""Copy formatargspec from python 3.7 standard library.
|
||
|
|
|
||
|
|
Python 3 has deprecated formatargspec and requested that Signature
|
||
|
|
be used instead, however this requires a full reimplementation
|
||
|
|
of formatargspec() in terms of creating Parameter objects and such.
|
||
|
|
Instead of introducing all the object-creation overhead and having
|
||
|
|
to reinvent from scratch, just copy their compatibility routine.
|
||
|
|
|
||
|
|
Utimately we would need to rewrite our "decorator" routine completely
|
||
|
|
which is not really worth it right now, until all Python 2.x support
|
||
|
|
is dropped.
|
||
|
|
|
||
|
|
"""
|
||
|
|
|
||
|
|
def formatargandannotation(arg):
|
||
|
|
result = formatarg(arg)
|
||
|
|
if arg in annotations:
|
||
|
|
result += ": " + formatannotation(annotations[arg])
|
||
|
|
return result
|
||
|
|
|
||
|
|
specs = []
|
||
|
|
if defaults:
|
||
|
|
firstdefault = len(args) - len(defaults)
|
||
|
|
for i, arg in enumerate(args):
|
||
|
|
spec = formatargandannotation(arg)
|
||
|
|
if defaults and i >= firstdefault:
|
||
|
|
spec = spec + formatvalue(defaults[i - firstdefault])
|
||
|
|
specs.append(spec)
|
||
|
|
|
||
|
|
if varargs is not None:
|
||
|
|
specs.append(formatvarargs(formatargandannotation(varargs)))
|
||
|
|
else:
|
||
|
|
if kwonlyargs:
|
||
|
|
specs.append("*")
|
||
|
|
|
||
|
|
if kwonlyargs:
|
||
|
|
for kwonlyarg in kwonlyargs:
|
||
|
|
spec = formatargandannotation(kwonlyarg)
|
||
|
|
if kwonlydefaults and kwonlyarg in kwonlydefaults:
|
||
|
|
spec += formatvalue(kwonlydefaults[kwonlyarg])
|
||
|
|
specs.append(spec)
|
||
|
|
|
||
|
|
if varkw is not None:
|
||
|
|
specs.append(formatvarkw(formatargandannotation(varkw)))
|
||
|
|
|
||
|
|
result = "(" + ", ".join(specs) + ")"
|
||
|
|
if "return" in annotations:
|
||
|
|
result += formatreturns(formatannotation(annotations["return"]))
|
||
|
|
return result
|
||
|
|
|
||
|
|
|
||
|
|
elif py2k:
|
||
|
|
from inspect import formatargspec as _inspect_formatargspec
|
||
|
|
|
||
|
|
def inspect_formatargspec(*spec, **kw):
|
||
|
|
# convert for a potential FullArgSpec from compat.getfullargspec()
|
||
|
|
return _inspect_formatargspec(*spec[0:4], **kw) # noqa
|
||
|
|
|
||
|
|
|
||
|
|
else:
|
||
|
|
from inspect import formatargspec as inspect_formatargspec # noqa
|
||
|
|
|
||
|
|
|
||
|
|
# Fix deprecation of accessing ABCs straight from collections module
|
||
|
|
# (which will stop working in 3.8).
|
||
|
|
if py33:
|
||
|
|
import collections.abc as collections_abc
|
||
|
|
else:
|
||
|
|
import collections as collections_abc # noqa
|
||
|
|
|
||
|
|
|
||
|
|
@contextlib.contextmanager
|
||
|
|
def nested(*managers):
|
||
|
|
"""Implement contextlib.nested, mostly for unit tests.
|
||
|
|
|
||
|
|
As tests still need to run on py2.6 we can't use multiple-with yet.
|
||
|
|
|
||
|
|
Function is removed in py3k but also emits deprecation warning in 2.7
|
||
|
|
so just roll it here for everyone.
|
||
|
|
|
||
|
|
"""
|
||
|
|
|
||
|
|
exits = []
|
||
|
|
vars_ = []
|
||
|
|
exc = (None, None, None)
|
||
|
|
try:
|
||
|
|
for mgr in managers:
|
||
|
|
exit_ = mgr.__exit__
|
||
|
|
enter = mgr.__enter__
|
||
|
|
vars_.append(enter())
|
||
|
|
exits.append(exit_)
|
||
|
|
yield vars_
|
||
|
|
except:
|
||
|
|
exc = sys.exc_info()
|
||
|
|
finally:
|
||
|
|
while exits:
|
||
|
|
exit_ = exits.pop() # noqa
|
||
|
|
try:
|
||
|
|
if exit_(*exc):
|
||
|
|
exc = (None, None, None)
|
||
|
|
except:
|
||
|
|
exc = sys.exc_info()
|
||
|
|
if exc != (None, None, None):
|
||
|
|
reraise(exc[0], exc[1], exc[2])
|
||
|
|
|
||
|
|
|
||
|
|
def raise_from_cause(exception, exc_info=None):
|
||
|
|
r"""legacy. use raise\_()"""
|
||
|
|
|
||
|
|
if exc_info is None:
|
||
|
|
exc_info = sys.exc_info()
|
||
|
|
exc_type, exc_value, exc_tb = exc_info
|
||
|
|
cause = exc_value if exc_value is not exception else None
|
||
|
|
reraise(type(exception), exception, tb=exc_tb, cause=cause)
|
||
|
|
|
||
|
|
|
||
|
|
def reraise(tp, value, tb=None, cause=None):
|
||
|
|
r"""legacy. use raise\_()"""
|
||
|
|
|
||
|
|
raise_(value, with_traceback=tb, from_=cause)
|
||
|
|
|
||
|
|
|
||
|
|
def with_metaclass(meta, *bases):
|
||
|
|
"""Create a base class with a metaclass.
|
||
|
|
|
||
|
|
Drops the middle class upon creation.
|
||
|
|
|
||
|
|
Source: http://lucumr.pocoo.org/2013/5/21/porting-to-python-3-redux/
|
||
|
|
|
||
|
|
"""
|
||
|
|
|
||
|
|
class metaclass(meta):
|
||
|
|
__call__ = type.__call__
|
||
|
|
__init__ = type.__init__
|
||
|
|
|
||
|
|
def __new__(cls, name, this_bases, d):
|
||
|
|
if this_bases is None:
|
||
|
|
return type.__new__(cls, name, (), d)
|
||
|
|
return meta(name, bases, d)
|
||
|
|
|
||
|
|
return metaclass("temporary_class", None, {})
|
||
|
|
|
||
|
|
|
||
|
|
if py3k:
|
||
|
|
from datetime import timezone
|
||
|
|
else:
|
||
|
|
from datetime import datetime
|
||
|
|
from datetime import timedelta
|
||
|
|
from datetime import tzinfo
|
||
|
|
|
||
|
|
class timezone(tzinfo):
|
||
|
|
"""Minimal port of python 3 timezone object"""
|
||
|
|
|
||
|
|
__slots__ = "_offset"
|
||
|
|
|
||
|
|
def __init__(self, offset):
|
||
|
|
if not isinstance(offset, timedelta):
|
||
|
|
raise TypeError("offset must be a timedelta")
|
||
|
|
if not self._minoffset <= offset <= self._maxoffset:
|
||
|
|
raise ValueError(
|
||
|
|
"offset must be a timedelta "
|
||
|
|
"strictly between -timedelta(hours=24) and "
|
||
|
|
"timedelta(hours=24)."
|
||
|
|
)
|
||
|
|
self._offset = offset
|
||
|
|
|
||
|
|
def __eq__(self, other):
|
||
|
|
if type(other) != timezone:
|
||
|
|
return False
|
||
|
|
return self._offset == other._offset
|
||
|
|
|
||
|
|
def __hash__(self):
|
||
|
|
return hash(self._offset)
|
||
|
|
|
||
|
|
def __repr__(self):
|
||
|
|
return "sqlalchemy.util.%s(%r)" % (
|
||
|
|
self.__class__.__name__,
|
||
|
|
self._offset,
|
||
|
|
)
|
||
|
|
|
||
|
|
def __str__(self):
|
||
|
|
return self.tzname(None)
|
||
|
|
|
||
|
|
def utcoffset(self, dt):
|
||
|
|
return self._offset
|
||
|
|
|
||
|
|
def tzname(self, dt):
|
||
|
|
return self._name_from_offset(self._offset)
|
||
|
|
|
||
|
|
def dst(self, dt):
|
||
|
|
return None
|
||
|
|
|
||
|
|
def fromutc(self, dt):
|
||
|
|
if isinstance(dt, datetime):
|
||
|
|
if dt.tzinfo is not self:
|
||
|
|
raise ValueError("fromutc: dt.tzinfo " "is not self")
|
||
|
|
return dt + self._offset
|
||
|
|
raise TypeError(
|
||
|
|
"fromutc() argument must be a datetime instance" " or None"
|
||
|
|
)
|
||
|
|
|
||
|
|
@staticmethod
|
||
|
|
def _timedelta_to_microseconds(timedelta):
|
||
|
|
"""backport of timedelta._to_microseconds()"""
|
||
|
|
return (
|
||
|
|
timedelta.days * (24 * 3600) + timedelta.seconds
|
||
|
|
) * 1000000 + timedelta.microseconds
|
||
|
|
|
||
|
|
@staticmethod
|
||
|
|
def _divmod_timedeltas(a, b):
|
||
|
|
"""backport of timedelta.__divmod__"""
|
||
|
|
|
||
|
|
q, r = divmod(
|
||
|
|
timezone._timedelta_to_microseconds(a),
|
||
|
|
timezone._timedelta_to_microseconds(b),
|
||
|
|
)
|
||
|
|
return q, timedelta(0, 0, r)
|
||
|
|
|
||
|
|
@staticmethod
|
||
|
|
def _name_from_offset(delta):
|
||
|
|
if not delta:
|
||
|
|
return "UTC"
|
||
|
|
if delta < timedelta(0):
|
||
|
|
sign = "-"
|
||
|
|
delta = -delta
|
||
|
|
else:
|
||
|
|
sign = "+"
|
||
|
|
hours, rest = timezone._divmod_timedeltas(
|
||
|
|
delta, timedelta(hours=1)
|
||
|
|
)
|
||
|
|
minutes, rest = timezone._divmod_timedeltas(
|
||
|
|
rest, timedelta(minutes=1)
|
||
|
|
)
|
||
|
|
result = "UTC%s%02d:%02d" % (sign, hours, minutes)
|
||
|
|
if rest.seconds:
|
||
|
|
result += ":%02d" % (rest.seconds,)
|
||
|
|
if rest.microseconds:
|
||
|
|
result += ".%06d" % (rest.microseconds,)
|
||
|
|
return result
|
||
|
|
|
||
|
|
_maxoffset = timedelta(hours=23, minutes=59)
|
||
|
|
_minoffset = -_maxoffset
|
||
|
|
|
||
|
|
timezone.utc = timezone(timedelta(0))
|