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annotate cutils/util/cm.py @ 344:0a58948df713

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Move the computation of the special tag string marker for special files into a property
author Franz Glasner <fzglas.hg@dom66.de>
date Tue, 01 Apr 2025 12:45:56 +0200
parents 48430941c18c
children
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1 # -*- coding: utf-8 -*-
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2 # :-
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3 # SPDX-FileCopyrightText: © 2024-2025 Franz Glasner
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4 # SPDX-License-Identifier: BSD-3-Clause
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5 # :-
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6 r"""Context manager extensions and compatibility.
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7
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8 """
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9
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10 from __future__ import print_function, absolute_import
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13 __all__ = ["nullcontext"]
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16 try:
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17 from contextlib import nullcontext
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18 except ImportError:
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19 class nullcontext(object):
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21 """Compatibility implementation for systems that are missing yet
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22 a standard :class:`contextlib.nullcontext`.
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24 """
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26 __slots__ = ("thing", )
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28 def __init__(self, thing=None):
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29 self.thing = thing
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31 def __enter__(self):
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32 return self.thing
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34 def __exit__(self, *args, **kwds):
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35 pass