8000 Copy backport of isolated_modules from importlib_resources. · python/importlib_metadata@07d894d · GitHub
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jaracojaraco
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Copy backport of isolated_modules from importlib_resources.
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‎tests/compat/py312.py

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import contextlib
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from .py39 import import_helper
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@contextlib.contextmanager
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def isolated_modules():
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"""
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Save modules on entry and cleanup on exit.
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"""
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(saved,) = import_helper.modules_setup()
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try:
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yield
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finally:
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import_helper.modules_cleanup(saved)
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vars(import_helper).setdefault('isolated_modules', isolated_modules)

‎tests/compat/py39.py

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os_helper = try_import('os_helper') or from_test_support(
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'FS_NONASCII', 'skip_unless_symlink'
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)
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import_helper = try_import('import_helper') or from_test_support()

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