Slight typo - the sample replacement should read: def wat(*args) a, b, *args = args ..But I don't see how moving required arguments from the signature t

Slight typo - the sample replacement should read: def wat(*args) a, b, *args = args ..But I don't see how moving required arguments from the signature to the body (or turning a TypeError into a ValueError) might be useful, or how it differs from the presentation's first advanced unpacking example.