Ken Seehart

Here's my workaround: ```python import traceback class MyUI: def __init__(self, canvas, model): self.canvas = canvas self.model = model canvas.on_mouse_down(self.mouse_down) def mouse_down(self, x, y): try: do_some_stuff() except: self.print_traceback() def print_traceback(self): self.canvas.fill_style...

Looks like the CallbackDispatcher is consuming stdin and stdout for some reason. It's not about exceptions per se. Probably the exception is be handled in the normal way, but when...

I'm working on a patch....

I'm running into the same problem. In my use case, my refactoring code can modify or remove lines, but, as it turns out, it will never (intentionally) change the indentation...