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?
EXAMPLE:
class YesNo(object):
def __init__(self, which):
self.no = self.yes
self.__call__ = self.yes
def yes(self, val):
print 'Yes', val
def no(self, val):
print 'No', val
def __call__(self, val):
raise NotImplementedError()
>>> y = YesNo(True)
>>> y.yes('hello')
Yes hello
>>> y.no('hello')
Yes hello
>>> y('hello')
Traceback ....
Not ImplementedError
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