[docs] [issue25461] Unclear language (the word ineffective) in the documentation for os.walk

[Bernt Røskar Brenna]

Bernt Røskar Brenna added the comment:

Yet another patch, this time including changes to os.walk()'s docstring as well.

Ignore the two other files.

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Added file: http://bugs.python.org/file40849/os_walk_doc.patch

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