text: """[Default values]
  What happens at run time...
      When modules are loaded:  All the code is executed immediately.
  
          Module Code
  
          a = 10          the interger object 10 is created and a references it.
  
          def func(a):    the function object is created, and func references it.
              print(a)
  
          func(a)         the function is executed
  
  
  What about default values?
  
      Module code
  
      def func(a=10):     the function object is created, and func references it
          print(a)        the integer object 10 is evaluated/created and is assigned as the default value for a
  
  
      func()              the function is executed
  
                          by the time this happens, the default value for a has already been evaluated and assigned - it is not re-evaluated when the function is calle
  """