51 lines
1.8 KiB
Python
51 lines
1.8 KiB
Python
"""
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The _compat module is used for code which requires branching between different
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Python environments. It is excluded from the code coverage checks.
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"""
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import asyncio
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import ssl
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import sys
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import typing
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if typing.TYPE_CHECKING: # pragma: no cover
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import typing_extensions
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# Brotli support is optional
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# The C bindings in `brotli` are recommended for CPython.
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# The CFFI bindings in `brotlicffi` are recommended for PyPy and everything else.
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try:
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import brotlicffi as brotli
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except ImportError: # pragma: nocover
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try:
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import brotli
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except ImportError:
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brotli = None
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if sys.version_info >= (3, 10) or (
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sys.version_info >= (3, 7) and ssl.OPENSSL_VERSION_INFO >= (1, 1, 0, 7)
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):
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def set_minimum_tls_version_1_2(context: ssl.SSLContext) -> None:
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# The OP_NO_SSL* and OP_NO_TLS* become deprecated in favor of
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# 'SSLContext.minimum_version' from Python 3.7 onwards, however
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# this attribute is not available unless the ssl module is compiled
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# with OpenSSL 1.1.0g or newer.
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# https://docs.python.org/3.10/library/ssl.html#ssl.SSLContext.minimum_version
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# https://docs.python.org/3.7/library/ssl.html#ssl.SSLContext.minimum_version
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context.minimum_version = ssl.TLSVersion.TLSv1_2
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else:
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def set_minimum_tls_version_1_2(context: ssl.SSLContext) -> None:
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# If 'minimum_version' isn't available, we configure these options with
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# the older deprecated variants.
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context.options |= ssl.OP_NO_SSLv2
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context.options |= ssl.OP_NO_SSLv3
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context.options |= ssl.OP_NO_TLSv1
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context.options |= ssl.OP_NO_TLSv1_1
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def iscoroutine(coro: object) -> "typing_extensions.TypeGuard[typing.Coroutine]":
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# Drop when this is resolved: https://github.com/python/typeshed/pull/8104
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return asyncio.iscoroutine(coro)
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