On Wed, 02 Mar 2011 23:46:31 +0000, Steven D'Aprano wrote: > For starters, how about giving an example of a built-in string, list or > dictionary where `if len(x) == 0` and `if x` give different results? Er, how embarrassment... of course I mean either len(x) != 0, or not x, take your pick. -- Steven