Overriding member methods in __init__

[c james]

Bruno Desthuilliers wrote:
> c james a écrit :
>> Given a condition at the time a class is instantiated, I want to change
>> how __call__ is used.  From the example below, self.no is using self.yes
>> but self.__call__ is not.  Can someone please explain why?
> 
> IIRC, you can't override __magic__ methods on a per-instance basis.


> This should do the trick:
> 
> class YesNo(object):
>    def __init__(self, which):
>      self.which = which
> 
>    def __call__(self, val):
>      return (self.no, self.yes)[self.which](val)
> 
>    def yes(self, val):
>      print 'Yes', val
> 
>    def no(self, val):
>      print 'No', val

Thanks, I was trying to eliminate another level of indirection with a
test at each invocation of __call__