Guido had mentioned awhile ago about possibly adding pychecker to Tools. If people want it in, what needs to be done? There are 2 differences between the last released version of pychecker and the current CVS. 1 is a bug fix for inconsistent return types and the other is a new warning for local variables which shadow globals. I will run the current pychecker on the std library soon and report any problems. I have been running purify and all of the "major" problems have bugs reports. These "major" problems are memory leaks, the biggest is about 5k from test_parser which leaks when doing recursion in build_node_children() parsermodule.c:728. Neal