Function split

Lib/ntpath.py:222–235

Split a pathname. Return tuple (head, tail) where tail is everything after the final slash. Either part may be empty.

(p, /)

# The resulting head won't end in '/' unless it is the root.

def split(p, /):
    """Split a pathname.

    Return tuple (head, tail) where tail is everything after the final slash.
    Either part may be empty."""
    p = os.fspath(p)
    seps = _get_bothseps(p)
    d, r, p = splitroot(p)
    # set i to index beyond p's last slash
    i = len(p)
    while i and p[i-1] not in seps:
        i -= 1
    head, tail = p[:i], p[i:]  # now tail has no slashes
    return d + r + head.rstrip(seps), tail


# Split a path in root and extension.