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Re: for...else

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  Re: for...else Jean-Michel Pichavant <jeanmichel@sequans.com> - 2015-06-02 14:01 +0200

#91831 — Re: for...else

----- Original Message -----
> From: "acdr" <mail.acdr@gmail.com>
> To: python-list@python.org
> Sent: Tuesday, 2 June, 2015 1:26:42 PM
> Subject: for...else
> 
> Hi,
> 
> Currently, in various places in my code, I have the equivalent of:
> 
> for x in it:
>     if complicated_calculation_1():
>         cleanup()
>         break
>     complicated_calculation_2()
>     if complicated_calculation_3():
>         cleanup()
>         break

Hi

With the following layout, adding calculation steps is just a matter of adding a line

for x ion it:
  for calc, cbk in [
    (complicated_calculation_1, cleanup),
    (complicated_calculation_2, None),
    (complicated_calculation_3, cleanup),
  ]:
    if calc() and cbk:
      cbk()
      break
      
It might give you ideas.

JM


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