tych0/xcffib — pull request #14 by flacjacket (2014-07-08 23:03:23+00:00)
Title: Check `thing` is a class before checking `issubclass(...)`

Needed when `thing` is a string, like `"c"` or `"I"`(as in the generated `xcffib/randr.py` class `GetScreenResolutionReply`)