coding style - try, except

Steve Holden steve at holdenweb.com
Wed Feb 25 18:53:46 CET 2009


RGK wrote:
> 
> I'm still learning, so eager to see if there is some community wisdom
> about use of the try/except structures in this situation.
> 
> I find myself with some potentially risky stuff and wrap it in a
> try/except structure with good functional results, though my code leaves
> me a bit uneasy. Maybe it's just esoteric, but your input is appreciated.
> 
> Consider
> 
>   try:
>     do something 1
>     do something 2
>     do something 3
>     do something 4
>     ...
>     do something 25
> 
>   except:
>     print "Oops something didn't work"
> 
> 
> The risky things are just 1 & 2, and the others are not of concern, but
> are dependent on 1 & 2.  The alternative is to do:
> 
>   wentOkay = True
>   try:
>     do something 1
>     do something 2
> 
>   except:
>     print "Oops something didn't work"
>     wentOkay = False
> 
>   if wentOkay:
>     do something 3
>     do something 4
>      ...
>     do something 25
> 
> 
> Which seems a bit verbose, but likely the better approach.  Is there
> some other option I should be considering?
> 
> Any input appreciated :)
> 
The first form is far preferable: it expresses the logic directly and
clearly, and is much easier to read than the second, which I personally
find somewhat contorted.

regards
 Steve
-- 
Steve Holden        +1 571 484 6266   +1 800 494 3119
Holden Web LLC              http://www.holdenweb.com/




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