Re: Python scoping

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Date	Tue, 21 Jun 2011 08:52:22 +1000
Subject	Re: Python scoping
From	Chris Angelico <rosuav@gmail.com>
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On Tue, Jun 21, 2011 at 8:35 AM, gervaz <gervaz@gmail.com> wrote:
> Hi all, can you explain me why this simple function works well (i.e. I
> can call the print function using txt) in py
>
>>>> def test(value):
> ...     if value%5: txt = "hello"
> ...     else: txt = "test"
> ...     print(txt)

It's as though you had "PyObject txt;" at the top of the function. The
scope is the function. There's no way (afaik) to make a variable be
local to a portion of the function - that's a feature that has to be
sacrificed to the simplicity of not declaring variables.

In my opinion it's better to declare them, except in interactive code
(eg IDLE or just typing "python"). But Python isn't that.

Chris Angelico

Thread

Python scoping gervaz <gervaz@gmail.com> - 2011-06-20 15:35 -0700
  Re: Python scoping Chris Angelico <rosuav@gmail.com> - 2011-06-21 08:52 +1000
  Re: Python scoping Ben Finney <ben+python@benfinney.id.au> - 2011-06-21 10:39 +1000
    Re: Python scoping Chris Angelico <rosuav@gmail.com> - 2011-06-21 10:55 +1000
      Re: Python scoping Ben Finney <ben+python@benfinney.id.au> - 2011-06-21 12:38 +1000
        Re: Python scoping Chris Angelico <rosuav@gmail.com> - 2011-06-21 13:21 +1000
          Re: Python scoping Ben Finney <ben+python@benfinney.id.au> - 2011-06-21 14:06 +1000
            Re: Python scoping gervaz <gervaz@gmail.com> - 2011-06-21 02:05 -0700
  Re: Python scoping Steven D'Aprano <steve+comp.lang.python@pearwood.info> - 2011-06-21 00:57 +0000

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