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Re: Common LISP-style closures with Python

References <dY_Wq.11747$I33.10275@uutiset.elisa.fi>
Date 2012-02-03 18:47 -0800
Subject Re: Common LISP-style closures with Python
From Chris Rebert <clp2@rebertia.com>
Newsgroups comp.lang.python
Message-ID <mailman.5426.1328323649.27778.python-list@python.org> (permalink)

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On Fri, Feb 3, 2012 at 4:27 PM, Antti J Ylikoski <antti.ylikoski@tkk.fi> wrote:
>
> In Python textbooks that I have read, it is usually not mentioned that
> we can very easily program Common LISP-style closures with Python.  It
> is done as follows:
>
> -------------------------------------
>
> # Make a Common LISP-like closure with Python.
> #
> # Antti J Ylikoski 02-03-2012.
>
> def f1():
>    n = 0
>    def f2():
>        nonlocal n
>        n += 1
>        return n
>    return f2
<snip>
> i. e. we can have several functions with private local states which
> are kept between function calls, in other words we can have Common
> LISP-like closures.

Out of curiosity, what would be non-Common-Lisp-style closures?

Cheers,
Chris

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Thread

Common LISP-style closures with Python Antti J Ylikoski <antti.ylikoski@tkk.fi> - 2012-02-04 02:27 +0200
  Re: Common LISP-style closures with Python Chris Rebert <clp2@rebertia.com> - 2012-02-03 18:47 -0800
    Re: Common LISP-style closures with Python Antti J Ylikoski <antti.ylikoski@tkk.fi> - 2012-02-04 12:14 +0200
      Re: Common LISP-style closures with Python Antti J Ylikoski <antti.ylikoski@tkk.fi> - 2012-02-04 12:23 +0200
      Re: Common LISP-style closures with Python Arnaud Delobelle <arnodel@gmail.com> - 2012-02-04 10:58 +0000
        Re: Common LISP-style closures with Python Antti J Ylikoski <antti.ylikoski@tkk.fi> - 2012-02-04 15:09 +0200
          Re: Common LISP-style closures with Python Tomasz Rola <rtomek@ceti.pl> - 2012-02-04 18:42 +0100
      Re: Common LISP-style closures with Python Devin Jeanpierre <jeanpierreda@gmail.com> - 2012-02-04 17:52 -0500
  Re: Common LISP-style closures with Python John O'Hagan <research@johnohagan.com> - 2012-02-05 12:31 +1100
    Re: Common LISP-style closures with Python Antti J Ylikoski <antti.ylikoski@tkk.fi> - 2012-02-05 06:19 +0200
      Re: Common LISP-style closures with Python Ian Kelly <ian.g.kelly@gmail.com> - 2012-02-05 13:58 -0700
        Re: Common LISP-style closures with Python Antti J Ylikoski <antti.ylikoski@tkk.fi> - 2012-02-06 07:55 +0200
  Re: Common LISP-style closures with Python Rick Johnson <rantingrickjohnson@gmail.com> - 2012-02-05 15:29 -0800
  Re: Common LISP-style closures with Python John Nagle <nagle@animats.com> - 2012-02-09 22:26 -0800
  Re: Common LISP-style closures with Python 88888 Dihedral <dihedral88888@googlemail.com> - 2012-02-09 23:55 -0800

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