old_contents: from foo import Foo
  
  # We'll create a Foo object with a value of 5...
  f=Foo(5)
  
  # Calling f.bar() will print a message including the value...
  print ('f=Foo(5)')
  print ('\t'),
  f.bar()
  print
  
  # Now we'll use foobar to add a value to that stored in our Foo object, f
  print ("print (f.foobar(7)) = "),
  print (f.foobar(7))
  print
  
  # Now we'll do the same thing - but this time demonstrate that it's a normal
  # Python integer...
  
  x = f.foobar(2)
  print ("Type of x; where x = f.foobar(2)")
  print ("\t"),
  print (type(x))
  print 
  
new_contents: from foo import Foo
  
  # We'll create a Foo object with a value of 5...
  f=Foo(5)
  
  # Calling f.bar() will print a message including the value...
  print ('f=Foo(5)')
  print ('\t'),
  # Note that Foo.bar() has it's own print routine (via std::cout).
  f.bar()
  print
  
  # Now we'll use foobar to add a value to that stored in our Foo object, f
  print ("print (f.foobar(7)) = "),
  print (f.foobar(7))
  print
  
  # Now we'll do the same thing - but this time demonstrate that it's a normal
  # Python integer...
  
  x = f.foobar(2)
  print ("Type of x; where x = f.foobar(2)")
  print ("\t"),
  print (type(x))
  print 
  
subject: Improve comments in test.py