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Groups > comp.lang.python > #10117

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

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You're right. Sure the method header is evaluated first I usually not
fall in this trap when default is a list but a singleton one with the same
id.
I answered too fast, I did not understand if he forget the dot or what.
And the double '_' in init was strange because he uses only one '_' after.

Thanks to take time to point that.

Regards
Karim

On 07/22/2011 02:06 PM, Thomas Jollans wrote:
> On 22/07/11 13:32, Karim wrote:
>> I think you did a typo
>>
>> it is
>>
>> def foo2(self, len = self._myvar):
>>         while i<   len:
>>       dosomething
>>
> That, of course, won't work: the default argument (in this case:
> "self._myvar") is looked up when the function is created, and stored
> with the function. "self" does not exist at that point. (or, if it does,
> it's the wrong "self")
>

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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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