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Re: Is there a simpler way to modify all arguments in a function before using the arguments?

From aahz@pythoncraft.com (Aahz)
Newsgroups comp.lang.python
Subject Re: Is there a simpler way to modify all arguments in a function before using the arguments?
Date 2012-11-10 07:35 -0800
Organization The Cat & Dragon
Message-ID <k7ls7f$kvr$1@panix5.panix.com> (permalink)
References <18134e77-9b02-4aec-afb0-794ed900d194@googlegroups.com> <a8ed6936-0e85-421b-a2a4-96f255e7d76d@googlegroups.com> <mailman.3530.1352538537.27098.python-list@python.org>

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In article <mailman.3530.1352538537.27098.python-list@python.org>,
Peter Otten  <__peter__@web.de> wrote:
>Miki Tebeka wrote:
>
>>> Is there a simpler way to modify all arguments in a function before using
>>> the arguments?
>>
>> You can use a decorator:
>> 
>> from functools import wraps
>> 
>> def fix_args(fn):
>>     @wraps(fn)
>>     def wrapper(*args):
>>         args = (arg.replace('_', '') for arg in args)
>>         return fn(*args)
>> 
>>     return wrapper
>> 
>> @fix_args
>> def foo(x, y):
>>     print(x)
>>     print(y)
>
>I was tempted to post that myself, but he said /simpler/ ;)

From my POV, that *is* simpler.  When you change the parameters for foo,
you don't need to change the arg pre-processing.  Also allows code reuse,
probably any program needing this kind of processing once will need it
again.
-- 
Aahz (aahz@pythoncraft.com)           <*>         http://www.pythoncraft.com/

"....Normal is what cuts off your sixth finger and your tail..."  --Siobhan

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Thread

Is there a simpler way to modify all arguments in a function before using the arguments? bruceg113355@gmail.com - 2012-11-09 16:48 -0800
  Re: Is there a simpler way to modify all arguments in a function before using the arguments? Roy Smith <roy@panix.com> - 2012-11-09 20:05 -0500
    Re: Is there a simpler way to modify all arguments in a function before using the arguments? Steven D'Aprano <steve+comp.lang.python@pearwood.info> - 2012-11-10 01:16 +0000
      Re: Is there a simpler way to modify all arguments in a function before using the arguments? bruceg113355@gmail.com - 2012-11-10 05:15 -0800
        Re: Is there a simpler way to modify all arguments in a function before using the arguments? Chris Angelico <rosuav@gmail.com> - 2012-11-11 05:33 +1100
  Re: Is there a simpler way to modify all arguments in a function before using the arguments? Paul Rubin <no.email@nospam.invalid> - 2012-11-09 18:52 -0800
    Re: Is there a simpler way to modify all arguments in a function before using the arguments? Chris Angelico <rosuav@gmail.com> - 2012-11-10 14:56 +1100
      Re: Is there a simpler way to modify all arguments in a function before using the arguments? Paul Rubin <no.email@nospam.invalid> - 2012-11-09 20:05 -0800
        Re: Is there a simpler way to modify all arguments in a function before using the arguments? Chris Angelico <rosuav@gmail.com> - 2012-11-10 20:19 +1100
  Re: Is there a simpler way to modify all arguments in a function before using the arguments? Miki Tebeka <miki.tebeka@gmail.com> - 2012-11-09 20:17 -0800
    Re: Is there a simpler way to modify all arguments in a function before using the arguments? Peter Otten <__peter__@web.de> - 2012-11-10 10:09 +0100
      Re: Is there a simpler way to modify all arguments in a function before using the arguments? aahz@pythoncraft.com (Aahz) - 2012-11-10 07:35 -0800
        Re: Is there a simpler way to modify all arguments in a function before using the arguments? bruceg113355@gmail.com - 2012-11-10 09:56 -0800
        Re: Is there a simpler way to modify all arguments in a function before using the arguments? Peter Otten <__peter__@web.de> - 2012-11-11 10:28 +0100
        Re: Is there a simpler way to modify all arguments in a function before using the arguments? brucegoodstein@gmail.com - 2012-11-15 15:20 -0800
          Re: Is there a simpler way to modify all arguments in a function before using the arguments? Emile van Sebille <emile@fenx.com> - 2012-11-15 16:03 -0800
          Re: Is there a simpler way to modify all arguments in a function before using the arguments? Ethan Furman <ethan@stoneleaf.us> - 2012-11-15 20:00 -0800
            Re: Is there a simpler way to modify all arguments in a function before using the arguments? bruceg113355@gmail.com - 2012-11-16 07:00 -0800
              Re: Is there a simpler way to modify all arguments in a function before using the arguments? Ethan Furman <ethan@stoneleaf.us> - 2012-11-16 13:30 -0800
            Re: Is there a simpler way to modify all arguments in a function before using the arguments? bruceg113355@gmail.com - 2012-11-16 07:00 -0800
  Re: Is there a simpler way to modify all arguments in a function before using the arguments? Steve Howell <showell30@yahoo.com> - 2012-11-11 09:45 -0800

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