Ezio Melotti <ezio.melotti@gmail.com> added the comment: Maybe with a different name is less confusing: lambda return_value=each: return_value This copies the value of 'each' in a variable called 'return_value' that is local to the lambda. Since the copy happens when the lambdas are defined, 'return_value' has then the right value. ---------- _______________________________________ Python tracker <report@bugs.python.org> <http://bugs.python.org/issue13094> _______________________________________