Python类的多态的例子

  1 # -*- coding: utf-8 -*-
  2 # 类的多态
  3
  4 # 定义Person父类
  5 class Person(object):
  6     def __init__(self, name, gender):
  7         self.name = name
  8         self.gender = gender
  9     def whoAmI(self):
 10         return 'I am a Person，my name is %s' % self.name
 11
 12
 13 # Student类继承Person
 14 class Student(Person):
 15     def __init__(self, name, gender, score):
 16         self.name = name
 17         self.gender = gender
 18     def whoAmI(self):
 19         return 'I am a Student, my name is %s' % self.name
 20
 21
 22 # Teacher类继承Person
 23 class Teacher(Person):
 24     def __init__(self, name, gender, course):
 25         super(Teacher, self).__init__(name, gender)
 26         self.course = course
 27     def whoAmI(self):
 28         return 'I am a Teacher, my name is %s' % self.name
 29
 30
 31 # Who_am_i调用父类whoAmI函数
 32 def who_am_i(x):
 33     print x.whoAmI()
 34
 35 p = Person('Tim', 'Male')
 36 s = Student('Bob', 'Male', 88)
 37 t = Teacher('Alice','Female', 'English')
 38
 39 who_am_i(p)
 40 who_am_i(s)
 41 who_am_i(t)