[Python-Dev] Pre-PEP: Unifying try-except and try-finally

[Skip Montanaro]

    Tim> What about `else` mixed with try/except/finally?

    Tim> try:
    Tim>     A
    Tim> except:
    Tim>     B
    Tim> else:
    Tim>     C
    Tim> finally:
    Tim>     D

    Tim> If A executes without exception, does D execute before or after C?

According to Guido, execution is A, C, D in the normal case and A, B, D in
the exceptional case.  Execution never jumps back.

    Tim> I'm not saying we can't make up reasonable answers.  I'm saying
    Tim> they look more-or-less arbitrary, while the current nested forms
    Tim> are always clear.

As far as arbitrary answers go, execution only in the forward direction
seems more reasonable than jumping forward and back.

Skip