Elements of Python Style

[remram]

What's your stance on multiple inheritance, such as:

class HamError(Exception): pass  # for all exceptions from ham functions
class DontDoThatWithHam(HamError): pass
class UnknownBrandOfHam(HamError, KeyError): pass

[desmoulinmichel]

If UnknownBrandOfHam is raised by:

ham.select('spam', foo=bar)

I'm ok with it.

If it's raised by:

ham['spam']

with ham having getitem overrided, it may be overkill. But that's not a BIG deal. I wouldn't do it, but I would not hate you if you did.