title: tkinter python: catching exceptions
body: <p>Starting to program in python I felt at home with its error reporting. Now that I'm programming with Tkinter instead, I'm finding that it often happens that there are errors in my program that I do not notice even if they generate an exception: I catch them (sometimes) just because I go debugging Step by Step (I use wingIDE) and e.g. at a given line I see the exception reported. But what annoys me is that the program doesn't stop, yet this happens even in blocks <em>not</em> inside try/error.</p>
  
  <p><em>If</em> what I said makes any sense, do you know about some overall approach to at least display the errors? Being in Tkinter I could create an error window, and fill it with any exception is being generated, when it happens.</p>