Phoenix: CustomTreeCtrl::SortChildren doesn't work
I'm just trying to port my wxPython applications to Phoenix and I got a couple of bugs in the CustomTreeCtrl::SortChildren method.
First, it uses six.sort method, that's undefinited in six module
Second, it uses a compare method (defaulting to CustomTreeCtrl.OnCompareItems) to sort children, instead of using a key function. This way, it will not work under python 3.x