On 7 Oct 2005 14:23:49 -0700, "Rob Conner" <[EMAIL PROTECTED]> wrote:
>I dont know how to do this and can't think of a simple way to. > >All I want is a dictionary where two keys point to the same object. >(to steal the ascii art from >http://starship.python.net/crew/mwh/hacks/objectthink.html) >I want sometihng like this: > >,------. +-------+ >| dict |------>|+-----+| +---+ >`------' || "a" |+---->| 1 | > |+-----+| +---+ > | | ^ > |+-----+| | > || "b" |+-------' > |+-----+| > +-------+ > | | > |+-----+| +---+ > || "c" |+---->| 2 | > |+-----+| +---+ > +-------+ > >Where if I change "a" or "b" to 3 the other one will change? >Is this even possible? How would I do it? A simple, ugly answer: Use a mutable object rather than a plain integer. Example: >>> elt = [1] >>> dict = {"a":elt, "b":elt, "c":[2]} >>> print dict {'a': [1], 'c': [2], 'b': [1]} >>> dict["a"][0] = 3 >>> print dict {'a': [3], 'c': [2], 'b': [3]} >>> Regards, -=Dave -- Change is inevitable, progress is not. -- http://mail.python.org/mailman/listinfo/python-list
