On 11/15/11 2:31 PM, Grant Edwards wrote:
> On 2011-11-15, Barry W Brown<> wrote:
>
>> I thought that the point of the else clause is that it is reached
>> only if there is no exception in the try clause.
>
> Not really. If that's all you wanted, then you just put the code at
> the end of the try block.
No, he's right. You should only put code in the try: block where you want
exceptions to be caught. Everything else should be outside of the block. You
really do want to minimize the amount of code inside the try: block.
try:
# minimal code that might raise exceptions that you want to catch
except ThisError:
# handle ThisError exceptions, and probably continue execution
except ThatError:
# handle ThatError exceptions, and probably continue execution
else:
# Code that only runs if ThisError or ThatError were not
# raised in the try: block. This code may raise ThisError or ThatError
# exceptions that should not be caught by the above except: blocks.
# Other code that runs regardless if a caught-and-continued exception
# was raised or not
--
Robert Kern
"I have come to believe that the whole world is an enigma, a harmless enigma
that is made terrible by our own mad attempt to interpret it as though it had
an underlying truth."
-- Umberto Eco
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