上游充通大 ParisTech SHANGHAI JIAO TONG UNIVERSITY INSTITUT DES SCIENCES ET TECHNOLOGIES PARIS INSTITUTE OF TECHNOLOGY Functions,Informally We could write a main program to sing to both Lucy and Fred def main(): singFred() print() singLucy ( This gives us this new output >>main() Happy birthday to you！ Happy birthday to you! Happy birthday,dear Fred.. Happy birthday to you! Happy birthday to you！ Happy birthday to you! Happy birthday,dear Lucy... Happy birthday to you! 1212 Functions, Informally • We could write a main program to sing to both Lucy and Fred def main(): singFred() print() singLucy() • This gives us this new output >>> main() Happy birthday to you! Happy birthday to you! Happy birthday, dear Fred.. Happy birthday to you! Happy birthday to you! Happy birthday to you! Happy birthday, dear Lucy... Happy birthday to you!