That is the diference between a method and a function. A method do something and a function return something.
Example: def psum(n, m): print (n + m) def rsum(n, m): return (n +m) Then try this... >>> psum(2, 3) >>> a = psum(2, 3) >>> a >>> a = rsum(2, 3) >>> a You see it? -- http://mail.python.org/mailman/listinfo/python-list