How to except the unexpected?

[Bruno Desthuilliers]

Rene Pijlman a écrit :
> Jorge Godoy:
> 
>>Rene Pijlman:
>>
>>>my app was surprised by an
>>>httplib.InvalidURL since I hadn't noticed this could be raised by
>>>robotparser (this is undocumented).
>>
>>It isn't undocumented in my module.  From 'pydoc httplib':
> 
> 
> That's cheating: pydoc is reading the source :-)

Yes, and that's the Right Thing(tm) to do. Source code don't lie. Source 
  code don't get out of sync. So source code *is* the best documentation 
(or at least the most accurate).

> What I meant was, I'm calling robotparser, and there's no mention of
> exceptions on http://docs.python.org/lib/module-robotparser.html
> 
That's why reading the source is better. CQFD !-)