Re: 2 questions about scope

From: Alex Martelli (aleaxit_at_yahoo.com)
Date: 10/25/04 

Date: Mon, 25 Oct 2004 22:53:39 +0200

Andrew Dalke <adalke@mindspring.com> wrote:
   ...
> but you really shouldn't. Or use a function scope,
>
> i = "something"
> def scope():
> for i in range(100):
> ...
> scope()
>
> I mostly use the last when I want some non-trivial
> initialization in my module and don't want the various
> variables hanging around in the process space. I'll
> also follow it up with a "del scope" so that no one
> can reference the initialization code.

Execution in function scope is also generally quite a bit faster than
execution at module scope or in class scope. Any nontrivial code in
module scope is best scooped up into a function, which is then executed
and removed. I'd suggest naming the function '_init' or something like
that -- with a leading underscore to indicate to the reader of the
source that it's a private implementation detail (not _needed_, since
you're gonna delete it after running it once, but helpful to the reader
at no cost to the code's author).

Alex

Relevant Pages

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