On Wed, Feb 4, 2009 at 5:02 PM, todp...@hotmail.com <todp...@hotmail.com> wrote: > Using while loop and if statement, I'm trying to get Python to tell me > whether there are even or odd number of 1's in a binary representation. > For example, if I give Python a 00000111, then I want it to say that the > binary representation given has an odd number of 1's. > If I give it 00010111, then it will tell me that there is an even number of > 1's. > I'd appreciate any suggestion.
Please define "binary representation". Do you mean a sequence of bytes, an integer, a string of 0s and 1s, or something else entirely? If it's a string of 0s and 1s, then: is_even = zerosones.count('1') % 2 == 0 For an integer: is_even = bin(the_int)[2:].count('1') % 2 == 0 For the others, I don't know offhand. Cheers, Chris -- Follow the path of the Iguana... http://rebertia.com -- http://mail.python.org/mailman/listinfo/python-list