[Python-ideas] try-else without except or finally

[Rob Cliffe]

On 10/11/2011 13:28, Steven D'Aprano wrote:
> Yuval Greenfield wrote:
>
>> "Try...else..." doesn't make any sense without the except jn my eyes. 
>> The
>> "else" has to conjugate something.
>
>
> We already have while...else and for...else blocks in Python. The 
> principle is the same:
>
>
> while condition():
>     ...
> else:
>     # Run the else block unless we exit the while block with a break.
>     ...
>
>
> try:
>     ...
> else:
>     # Run the else block unless we exit the try block with an exception.
>     ...
> finally:
>     ...
>
>
> This currently doesn't work without a pointless "except: raise" clause 
> to satisfy the compiler. I try to avoid writing pointless code.
>
>
>
"except: raise" makes it explicit that an exception is to be 
propogated.  Far from being pointless it makes the code much more 
readable.  "Explicit is better than implicit."
Rob Cliffe