about dictionary

[Shi Mu]

I have have the following code:
>>> a=[3,5,8,0]
>>> b={}
>>>
How I can i assign each item in a as the key in the dictionary b
simultaneously?
that is,
b={3:[],5:[],8:[],0:[]}
Thanks!
-- 
http://mail.python.org/mailman/listinfo/python-list