Rename files in a directory by removing non-alphanumeric characters that shouldn't be in a filename.

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Rename files in a directory by removing non-alphanumeric characters that shouldn't be in a filename.

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Last edited Oct 31, 2014

Created on Oct 31, 2014

This example shows a Python script that recursively renames files and directories by replacing whitespace with underscores and stripping non-alphanumeric characters except periods, underscores, and hyphens. It walks the file system using `os.walk` and applies regular-expression substitutions via the `re` module, then moves each item with `shutil.move`. The script operates on user-specified directories or the current working directory, printing each rename action to standard error as it proceeds.

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