On Nov 2, 10:13 am, Jim Hendricks <j... at bizcomputinginc.com> wrote: > Here's an example of what I am asking: Try this example from Beazley (pg 82) a = 42 def foo(): a = 13 foo() print a 42 By contrast: a = 42 b = 13 def foo(): global a, b a = 13 b = 0 foo() print a 13 print b 0