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Helpers for normalization as expected in wheel/sdist/module file names
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    >>> safe_identifier("12abc")
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    '__editable___myns_pkg_78_9_3_local'
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    >>> safe_name("hello?world")
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    'hello_world'
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Convert an arbitrary string into a valid version string.
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    >>> safe_version("1988 12 25")
    '1988.12.25'
    >>> safe_version("v0.2.1")
    '0.2.1'
    >>> safe_version("v0.2?beta")
    '0.2b0'
    >>> safe_version("v0.2 beta")
    '0.2b0'
    >>> safe_version("ubuntu lts")
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    ...
    setuptools.extern.packaging.version.InvalidVersion: Invalid version: 'ubuntu.lts'
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    '0.2b0'
    >>> best_effort_version("ubuntu lts")
    '0.dev0+sanitized.ubuntu.lts'
    >>> best_effort_version("0.23ubuntu1")
    '0.23.dev0+sanitized.ubuntu1'
    >>> best_effort_version("0.23-")
    '0.23.dev0+sanitized'
    >>> best_effort_version("0.-_")
    '0.dev0+sanitized'
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    '42.dev0+sanitized.1'
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�B'B7�6B7�extrac�h�tjd|�jd�j�S)z�Normalize extra name according to PEP 685
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    'friendly-bard'
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    'friendly-bard'
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�filename_componentr3ns ���=�=��c�"�(�(��-�-rc�&�|jdd�S)a
    Produce the incorrect filename component for compatibility.

    See pypa/setuptools#4167 for detailed analysis.

    TODO: replace this with filename_component after pip 24 is
    nearly-ubiquitous.

    >>> filename_component_broken('foo_bar-baz')
    'foo-bar-baz'
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�filename_component_brokenr5ws���=�=��c�"�"rc�*�tt|��S)zBLike ``safe_name`` but can be used as filename component for wheel)r3rr2s r
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