On Tue, 29 Oct 2019 08:31:22 +0800 Changbin Du <changbin.du@xxxxxxxxx> wrote: > Here python is different from C. Both empty string and None are False in python. > Note such condition is common in python. Treating both as a False value is reasonably common. Treating them elsewhere in the same code block as separate values is less so; that's the part I would prefer to avoid. Thanks, jon