[New-bugs-announce] [issue32557] allow shutil.disk_usage to take a file path

[Eryk Sun]

New submission from Eryk Sun <eryksun at gmail.com>:

Issue 26330 was resolved by documenting that shutil.disk_usage requires a directory. However, the shutil module is in a position to harmonize cross-platform behavior in ways that aren't normally possible or recommended in the low-level os module. To that end, the Windows implementation could retry calling nt._getdiskusage on the resolved parent directory in case of NotADirectoryError. For example:

    def disk_usage(path):
        try:
            total, free = nt._getdiskusage(path)
        except NotADirectoryError:
            path = os.path.dirname(nt._getfinalpathname(path))
            total, free = nt._getdiskusage(path)
        used = total - free
        return _ntuple_diskusage(total, used, free)

Alternatively, this could be addressed in the implementation of nt._getdiskusage itself.

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components: Library (Lib), Windows
messages: 309992
nosy: eryksun, paul.moore, steve.dower, tim.golden, zach.ware
priority: normal
severity: normal
stage: needs patch
status: open
title: allow shutil.disk_usage to take a file path
type: enhancement
versions: Python 3.8

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Python tracker <report at bugs.python.org>
<https://bugs.python.org/issue32557>
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