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lines changed Original file line number Diff line number Diff line change @@ -449,8 +449,9 @@ Directory and files operations
449449 *mode * is a permission mask passed to :func: `os.access `, by default
450450 determining if the file exists and executable.
451451
452- When no *path * is specified, the results of :func: `os.environ ` are used,
453- returning either the "PATH" value or a fallback of :data: `os.defpath `.
452+ *path * is a "``PATH `` string" specifying the lookup directory list. When no
453+ *path * is specified, the results of :func: `os.environ ` are used, returning
454+ either the "PATH" value or a fallback of :data: `os.defpath `.
454455
455456 On Windows, the current directory is prepended to the *path * if *mode * does
456457 not include ``os.X_OK ``. When the *mode * does include ``os.X_OK ``, the
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