Groups > comp.lang.python > #19721

Question about name scope

From	Olive <diolu@bigfoot.com>
Newsgroups	comp.lang.python
Subject	Question about name scope
Date	2012-02-01 18:11 +0100
Organization	Aioe.org NNTP Server
Message-ID	<20120201181117.5d35dddc@bigfoot.com> (permalink)

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I am learning python and maybe this is obvious but I have not been able
to see a solution. What I would like to do is to be able to execute a
function within the namespace I would have obtained with  from <module>
import *

For example if I write:

def f(a):
	return sin(a)+cos(a)

I could then do:

from math import *

f(5)

But I have polluted my global namespace with all what's defined in
math. I would like to be able to do something like "from math import *"
at the f level alone.

The main reason for this is the sympy module for CAS (computer algebra).
It reimplement a lot of functions and define all the letters as symbolic
variables. Writing sympy.<function> everywhere is inconvenient.
Importing all the symbols in the global namespace would lead to name
clash. It would be nice if I could import all the sympy names but for a
given function only.

Olive

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Question about name scope Olive <diolu@bigfoot.com> - 2012-02-01 18:11 +0100
  Re: Question about name scope Rick Johnson <rantingrickjohnson@gmail.com> - 2012-02-01 09:21 -0800
  Re: Question about name scope Ethan Furman <ethan@stoneleaf.us> - 2012-02-01 09:43 -0800
  Re: Question about name scope Dave Angel <d@davea.name> - 2012-02-01 12:36 -0500
    Re: Question about name scope Mel Wilson <mwilson@the-wire.com> - 2012-02-01 13:47 -0500
      Re: Question about name scope Ian Kelly <ian.g.kelly@gmail.com> - 2012-02-01 14:49 -0700
      Re: Question about name scope Ian Kelly <ian.g.kelly@gmail.com> - 2012-02-01 15:38 -0700
      Re: Question about name scope Ethan Furman <ethan@stoneleaf.us> - 2012-02-01 14:24 -0800
      Re: Question about name scope Ian Kelly <ian.g.kelly@gmail.com> - 2012-02-01 16:00 -0700
      Re: Question about name scope Ethan Furman <ethan@stoneleaf.us> - 2012-02-01 15:08 -0800
      Re: Question about name scope Ian Kelly <ian.g.kelly@gmail.com> - 2012-02-01 16:47 -0700
      Re: Question about name scope Ethan Furman <ethan@stoneleaf.us> - 2012-02-01 14:53 -0800
        Re: Question about name scope Steven D'Aprano <steve+comp.lang.python@pearwood.info> - 2012-02-02 00:34 +0000
      Re: Question about name scope Ethan Furman <ethan@stoneleaf.us> - 2012-02-01 15:59 -0800
      Re: Question about name scope Ethan Furman <ethan@stoneleaf.us> - 2012-02-01 15:41 -0800
      Re: Question about name scope Ethan Furman <ethan@stoneleaf.us> - 2012-02-01 15:51 -0800
  Re: Question about name scope Chris Rebert <clp2@rebertia.com> - 2012-02-01 09:38 -0800
  Re: Question about name scope Christian Heimes <lists@cheimes.de> - 2012-02-01 18:50 +0100

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