On Oct 1, 10:24 am, Abandoned <[EMAIL PROTECTED]> wrote: > Hi.. > dict1={1: 4, 3: 5}... and 2 millions element > dict2={3: 3, 8: 6}... and 3 millions element > > I want to combine dict1 and dict2 and i don't want to use FOR because > i need to performance.
The dict.update approach is the fastest way to build a combined dictionary; however, it may be much cheaper to logically combine the dictionaries rather than spending the time and memory to build a physically combined dictionary: http://aspn.activestate.com/ASPN/Cookbook/Python/Recipe/305268 Raymond -- http://mail.python.org/mailman/listinfo/python-list