def hello_1(greeting, name): print '%s, %s!' % (greeting, name) def hello_2(name, greeting): print '%s, %s!' % (name, greeting) hello_1('Hello', 'world') hello_2('Hello', 'world') hello_1(greeting='Hello', name='world') hello_1(name='world', greeting='Hello') hello_2(greeting='Hello', name='world')