# Source code for PIL._util

    import os
    from pathlib import Path

    def isPath(f):
        return isinstance(f, (bytes, str, Path))

    # Checks if an object is a string, and that it points to a directory.
    def isDirectory(f):
        return isPath(f) and os.path.isdir(f)

    class deferred_error:
        def __init__(self, ex):
            self.ex = ex

        def __getattr__(self, elt):
            raise self.ex