paths.basename

Returns the basename (i.e., the file portion) of a path.

Note that if p ends with a slash, this function returns an empty string. This matches the behavior of Python's os.path.basename, but differs from the Unix basename command (which would return the path segment preceding the final slash).

Parameters

paths.dirname

Returns the dirname of a path.

The dirname is the portion of p up to but not including the file portion (i.e., the basename). Any slashes immediately preceding the basename are not included, unless omitting them would make the dirname empty.

Parameters

paths.is_absolute

Returns True if path is an absolute path.

Parameters

paths.join

Joins one or more path components intelligently.

This function mimics the behavior of Python's os.path.join function on POSIX platform. It returns the concatenation of path and any members of others, inserting directory separators before each component except the first. The separator is not inserted if the path up until that point is either empty or already ends in a separator.

If any component is an absolute path, all previous components are discarded.

Parameters

paths.normalize

Normalizes a path, eliminating double slashes and other redundant segments.

This function mimics the behavior of Python's os.path.normpath function on POSIX platforms; specifically:

• If the entire path is empty, “.” is returned.
• All “.” segments are removed, unless the path consists solely of a single “.” segment.
• Trailing slashes are removed, unless the path consists solely of slashes.
• “..” segments are removed as long as there are corresponding segments earlier in the path to remove; otherwise, they are retained as leading “..” segments.
• Single and double leading slashes are preserved, but three or more leading slashes are collapsed into a single leading slash.
• Multiple adjacent internal slashes are collapsed into a single slash.

Parameters

paths.relativize

Returns the portion of path that is relative to start.

Because we do not have access to the underlying file system, this implementation differs slightly from Python's os.path.relpath in that it will fail if path is not beneath start (rather than use parent segments to walk up to the common file system root).

Relativizing paths that start with parent directory references only works if the path both start with the same initial parent references.

Parameters

paths.replace_extension

Replaces the extension of the file at the end of a path.

If the path has no extension, the new extension is added to it.

Parameters

paths.split_extension

Splits the path p into a tuple containing the root and extension.

Leading periods on the basename are ignored, so path.split_extension(".bashrc") returns (".bashrc", "").

Parameters