Scope.py

def scope_test():
  def do_local():
#    print("before local " + spam)
    spam = "local spam"
    print("do_local: " + spam)
  def do_nonlocal():
#    print("before non-local: " + spam)
    nonlocal spam
    spam = "nonlocal spam"
    print("do_nonlocal: " + spam)
  def do_global():
#    print("before global: " + spam)
    global spam
    spam = "global spam"
    print("do_global: " + spam)

  spam = "test spam"
  print("original: " + spam)
  print()
  do_local()
  print("After local assignment:", spam)
  print()
  do_nonlocal()
  print("After nonlocal assignment:", spam)
  print()
  do_global()
  print("After global assignment:", spam)
  print()

#spam = ''
scope_test()
print("In global scope:", spam)