Lulu wrote: > >>> if i in 100: print 'even Natural' # I have no idea what this MEANS! Small point, but it would just mean the same as: >>> if i in xrange(100): as in, e.g., >>> i = 2 >>> if i in xrange(100): ... print 'spam' ... spam >>> You just wouldn't have to read or write the xrange thing. :-) Jim