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To: python-list@python.org
From: Terry Reedy <tjreedy@udel.edu>
Subject: Re: is there any principle when writing python function
Date: Tue, 23 Aug 2011 14:29:38 -0400
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Xref: x330-a1.tempe.blueboxinc.net comp.lang.python:12111

On 8/23/2011 11:22 AM, Steven D'Aprano wrote:

> Even 7=C2=B12 is probably excessive: I find that I'm most comfortable w=
ith
> functions that perform 4=C2=B11 chunks of work. An example from one of =
my
> classes:
>
>      def find(self, prefix):
>          """Find the item that matches prefix."""
>          prefix =3D prefix.lower()  # Chunk #1
>          menu =3D self._cleaned_menu  # Chunk #2
>          for i,s in enumerate(menu, 1):  # Chunk #3
>              if s.lower().startswith(prefix):
>                  return i
>          return None  # Chunk #4
>
> So that's three one-line chunks and one three-line chunk.

In terms of different functions performed (see my previous post), I see
   attribute lookup
   assignment
   enumerate
   sequence unpacking
   for-looping
   if-conditioning
   lower
   startswith
   return
That is 9,  which is enough.

--=20
Terry Jan Reedy