bpo-29707: Document that os.path.ismount() is not able to reliable de… · python/cpython@a4aade2 (original) (raw)

`` @@ -277,10 +277,11 @@ the :mod:glob module.)

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``` Return True if pathname *path* is a :dfn:mount point: a point in a


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` file system where a different file system has been mounted. On POSIX, the

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function checks whether *path*'s parent, :file:`path/..`, is on a different

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device than *path*, or whether :file:`path/..` and *path* point to the same

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function checks whether *path*'s parent, :file:`{path}/..`, is on a different

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device than *path*, or whether :file:`{path}/..` and *path* point to the same

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` i-node on the same device --- this should detect mount points for all Unix

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and POSIX variants. On Windows, a drive letter root and a share UNC are

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and POSIX variants. It is not able to reliably detect bind mounts on the

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same filesystem. On Windows, a drive letter root and a share UNC are

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```  always mount points, and for any other path ``GetVolumePathName`` is called

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` to see if it is different from the input path.

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