critique this little script, if you like

Alexis Roda arv.nntp at gmail.com
Mon May 1 17:45:44 CEST 2006


John Salerno escribió:
> Alexis Roda wrote:
>>
>>  > The
>>  > try block seems nicer because it doesn't have such an ugly-looking 
>> check
>>  > to make.
>>
> 
> Why do you think that this try block is preferred over what I have (if I 
> were to stick with the try block)?

My example has nothing to do with your script, apart from trying to 
illustrate why I think you should use "if" instead of "try" with a kind 
of "reductio ad absurdum" reasoning.

To me i == 0 seems as ugly as len(sys.argv) == 1 (*), so, according to 
your statement about ugly checks, you should avoid code like:

if i == 0 :
     do_something_if_zero()

and write something like:

try:
     x = 1 / i
except ZeroDivisionError :
     do_something_if_zero()

but probably you wouldn't, the "if" block seems more "natural" than the 
convoluted "try" block, so ...




Regards

(*) len(sys.argv) == 1 is exactly the same as len(sys.argv) - 1 == 0



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