annotate mercurial/typelib.py @ 50896:b2b8c25f9462

hgwebmod: use sysstr to check for attribute presence We do not need bytes here.
author Pierre-Yves David <pierre-yves.david@octobus.net>
date Wed, 30 Aug 2023 13:28:09 +0200
parents 8147abc05794
children f3b34386d3e0
Ignore whitespace changes - Everywhere: Within whitespace: At end of lines:
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1 # typelib.py - type hint aliases and support
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2 #
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3 # Copyright 2022 Matt Harbison <matt_harbison@yahoo.com>
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4 #
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5 # This software may be used and distributed according to the terms of the
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6 # GNU General Public License version 2 or any later version.
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7
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8 import typing
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9
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10 # Note: this is slightly different from pycompat.TYPE_CHECKING, as using
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11 # pycompat causes the BinaryIO_Proxy type to be resolved to ``object`` when
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12 # used as the base class during a pytype run.
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13 TYPE_CHECKING = typing.TYPE_CHECKING
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14
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15
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16 # The BinaryIO class provides empty methods, which at runtime means that
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17 # ``__getattr__`` on the proxy classes won't get called for the methods that
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18 # should delegate to the internal object. So to avoid runtime changes because
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19 # of the required typing inheritance, just use BinaryIO when typechecking, and
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20 # ``object`` otherwise.
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21 if TYPE_CHECKING:
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22 from typing import (
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23 BinaryIO,
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24 )
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25
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26 BinaryIO_Proxy = BinaryIO
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27 else:
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28 BinaryIO_Proxy = object