零基础学python函数全解之实例演示

1、import randomstudents = []def show_all(): print('***开始打印信息***') for x in students: print(x) print('***打印信息结束***')

3、def back_age_add(): res = 0 for x in students: res += x['age'] return res

5、def after_year(): for x in students: x['age'] += 1 x['grade'] += 1

7、names = ['hhl', 'ldh', 'zxy', 'cgx', 'xtf', 'cls', 'xcyz']for i in range(len(names)): insert_stu(names[i], random.randrange(18, 29), i+1, random.randrange(50, 71))show_all()

9、sort_age()show_all()

10、sort_age(False)show_all()