Why can't I subclass off of "date" ?

[Fredrik Lundh]

davidfinance at gmail.com wrote:

> Ok, maybe this is a stupid question, but why can't I make a subclass of
> datetime.date and override the __init__ method?

__init__ controls initialization of an already constructed object.  to 
control construction, you need to override __new__:

     http://pyref.infogami.com/__new__

e.g.

class A(date):
     def __new__(cls, a, b, c, d):
         print a, b, c, d
	return super(A, cls).__new__(cls, 2006, 12, 11)

</F>