Xiaolei Li wrote: > Hi, > > I'm trying to initialize a set from a list but am unable to do so. My > list "c", looks like: > > [(1.00909, 0.91969999999999996, -0.13550388182991072, 0), > (0.87423999999999991, 0.6666700000000001, -0.21230487137222254, 0)] > > So basically a list of 2 tuples, each with 4 elements. Since tuples > are immutable, I think a set should be able to support them. > > Anyway, I then do: > > set_c = set(c) > > And instead of getting a set, I get "None" when I try to print out > set_c. len(set_c) complains "TypeError: len() of unsized object." > Help?
>>> c = [(1.00909, 0.91969999999999996, -0.13550388182991072, 0), ... (0.87423999999999991, 0.6666700000000001, -0.21230487137222254, 0)] >>> set_c = set(c) >>> set_c set([(1.00909, 0.91969999999999996, -0.13550388182991072, 0), (0.87423999999999991, 0.6666700000000001, -0.21230487137222254, 0)]) >>> Please copy-and-paste the exact code that you wrote and the exact output. -- Robert Kern "I have come to believe that the whole world is an enigma, a harmless enigma that is made terrible by our own mad attempt to interpret it as though it had an underlying truth." -- Umberto Eco -- http://mail.python.org/mailman/listinfo/python-list
