gh-124825: Adding PurePath.erase_parents() to pathlib #135406
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The `PurePath.erase_parents()` method remove path components referring to parent directories ('..'). Unlike `Pure.resolve()`, this occurs without an attempt to verify the existence or structure of any path components. See discussion in python#124825 for use cases, involving lexical normalization and simplification of paths without reference to any particular underlying filesystem. Issue: - pythongh-124825 
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The
PurePath.erase_parents()method remove path components referring to parent directories ('..').Unlike
Pure.resolve(), this occurs without an attempt to verify the existence or structure of any path components.See discussion in gh-124825 for use cases, involving lexical normalization and simplification of paths without reference to any particular underlying filesystem.
Issue:
pathlib#124825