[issue1683368] object.__init__ shouldn't allow args/kwds

[Raymond Hettinger]

Raymond Hettinger added the comment:

Jason, I made some recommendations on this subject in my blog post a few years ago:  http://rhettinger.wordpress.com/2011/05/26/super-considered-super/

'''
A more flexible approach is to have every method in the ancestor tree cooperatively designed to accept keyword arguments and a keyword-arguments dictionary, to remove any arguments that it needs, and to forward the remaining arguments using **kwds, eventually leaving the dictionary empty for the final call in the chain.

Each level strips-off the keyword arguments that it needs so that the final empty dict can be sent to a method that expects no arguments at all (for example, object.__init__ expects zero arguments):

class Shape:
    def __init__(self, shapename, **kwds):
        self.shapename = shapename
        super().__init__(**kwds)        

class ColoredShape(Shape):
    def __init__(self, color, **kwds):
        self.color = color
        super().__init__(**kwds)

cs = ColoredShape(color='red', shapename='circle')

'''

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Python tracker <report at bugs.python.org>
<http://bugs.python.org/issue1683368>
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