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Groups > comp.lang.python > #10099

Re: Use self.vars in class.method(parameters, self.vars)

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On 22/07/11 13:12, caccolangrifata wrote:
> I'm very very new with python, and I have some experience with java
> programming, so probably you guys will notice.
> Anyway this is my question:
> I'd like to use class scope vars in method parameter, something like
> that
> 
> class foo(object):
> 
> 	__init__(self, len = 9):
> 		self.__myvar = len
> 
> 	def foo2(self, len = self_myvar):
> 		while i < len:
> 			dosomething
> 

I think what you want to do is this:

class foo (object):
    def __init__(self, len=9):
        self._len = len
    def foo2(self, len=None):
        if len is None:
            len = self._len
        # ...

Default arguments are for when you want to use exactly the same object
each time the function/method is called. If you the object you want to
use depends on something, you can use this arg=None idiom.

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Use self.vars in class.method(parameters, self.vars) caccolangrifata <caccolangrifata@gmail.com> - 2011-07-22 04:12 -0700
  Re: Use self.vars in class.method(parameters, self.vars) Karim <karim.liateni@free.fr> - 2011-07-22 13:32 +0200
  Re: Use self.vars in class.method(parameters, self.vars) Thomas Jollans <t@jollybox.de> - 2011-07-22 13:33 +0200
    Re: Use self.vars in class.method(parameters, self.vars) caccolangrifata <caccolangrifata@gmail.com> - 2011-07-22 05:02 -0700
  Re: Use self.vars in class.method(parameters, self.vars) Thomas Jollans <t@jollybox.de> - 2011-07-22 14:06 +0200
  Re: Use self.vars in class.method(parameters, self.vars) "bruno.desthuilliers@gmail.com" <bruno.desthuilliers@gmail.com> - 2011-07-22 08:43 -0700
    Re: Use self.vars in class.method(parameters, self.vars) caccolangrifata <caccolangrifata@gmail.com> - 2011-07-22 09:50 -0700
      Re: Use self.vars in class.method(parameters, self.vars) Thomas Jollans <t@jollybox.de> - 2011-07-22 20:58 +0200
    Re: Use self.vars in class.method(parameters, self.vars) rantingrick <rantingrick@gmail.com> - 2011-07-22 11:38 -0700
      Re: Use self.vars in class.method(parameters, self.vars) Thomas Jollans <t@jollybox.de> - 2011-07-22 20:49 +0200
      Re: Use self.vars in class.method(parameters, self.vars) John Gordon <gordon@panix.com> - 2011-07-22 19:00 +0000
        Re: Use self.vars in class.method(parameters, self.vars) Chris Angelico <rosuav@gmail.com> - 2011-07-23 05:12 +1000
          Re: Use self.vars in class.method(parameters, self.vars) caccolangrifata <caccolangrifata@gmail.com> - 2011-07-22 12:41 -0700
        Re: Use self.vars in class.method(parameters, self.vars) rantingrick <rantingrick@gmail.com> - 2011-07-22 12:16 -0700
          Re: Use self.vars in class.method(parameters, self.vars) Chris Angelico <rosuav@gmail.com> - 2011-07-23 06:20 +1000
  Re: Use self.vars in class.method(parameters, self.vars) Karim <karim.liateni@free.fr> - 2011-07-22 18:54 +0200
    Re: Use self.vars in class.method(parameters, self.vars) caccolangrifata <caccolangrifata@gmail.com> - 2011-07-22 09:59 -0700
      Re: Use self.vars in class.method(parameters, self.vars) Karim <karim.liateni@free.fr> - 2011-07-22 19:26 +0200
  Re: Use self.vars in class.method(parameters, self.vars) Chris Torek <nospam@torek.net> - 2011-07-22 22:22 +0000

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