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Name	Size	Perms	Modified	Actions
[ .. / .. ]
__about__.py	736 B	-rw-r--r--	2022-02-22 16:12:56	Edit Del
__init__.py	562 B	-rw-r--r--	2022-02-22 16:12:56	Edit Del
__pycache__	-	drwxr-xr-x	2022-02-22 16:12:56	Del
_compat.py	1.1 KB	-rw-r--r--	2022-02-22 16:12:56	Edit Del
_structures.py	1.97 KB	-rw-r--r--	2022-02-22 16:12:56	Edit Del
_typing.py	1.77 KB	-rw-r--r--	2022-02-22 16:12:56	Edit Del
markers.py	9.29 KB	-rw-r--r--	2022-02-22 16:12:56	Edit Del
requirements.py	4.8 KB	-rw-r--r--	2022-02-22 16:12:56	Edit Del
specifiers.py	31.2 KB	-rw-r--r--	2022-02-22 16:12:56	Edit Del
tags.py	23.5 KB	-rw-r--r--	2022-02-22 16:12:56	Edit Del
utils.py	1.77 KB	-rw-r--r--	2022-02-22 16:12:56	Edit Del
version.py	15.11 KB	-rw-r--r--	2022-02-22 16:12:56	Edit Del

Editing: _compat.py (1.1 KB)

# This file is dual licensed under the terms of the Apache License, Version
# 2.0, and the BSD License. See the LICENSE file in the root of this repository
# for complete details.
from __future__ import absolute_import, division, print_function

import sys

from ._typing import TYPE_CHECKING

if TYPE_CHECKING:  # pragma: no cover
    from typing import Any, Dict, Tuple, Type


PY2 = sys.version_info[0] == 2
PY3 = sys.version_info[0] == 3

# flake8: noqa

if PY3:
    string_types = (str,)
else:
    string_types = (basestring,)


def with_metaclass(meta, *bases):
    # type: (Type[Any], Tuple[Type[Any], ...]) -> Any
    """
    Create a base class with a metaclass.
    """
    # This requires a bit of explanation: the basic idea is to make a dummy
    # metaclass for one level of class instantiation that replaces itself with
    # the actual metaclass.
    class metaclass(meta):  # type: ignore
        def __new__(cls, name, this_bases, d):
            # type: (Type[Any], str, Tuple[Any], Dict[Any, Any]) -> Any
            return meta(name, bases, d)

    return type.__new__(metaclass, "temporary_class", (), {})