Python编程——类的继承

来源：互联网发布：淘宝怎么不接收旺旺编辑：程序博客网时间：2024/05/25 13:33
Python编程之类的继承
#-*-coding=utf-8-*-import osclass SchoolMember:'''Represents any school member.'''def __init__(self, name, age):print 'SchoolMember.self = %d'%id(self) self.name = nameself.age = ageprint '(Initialized SchoolMember %s)' % self.namedef tell(self):'''Tell my details.'''print 'Name: %-16sAge:%s' % (self.name, self.age), #class Teacher(SchoolMember):#继承关系的表示方法: 继承元组。在元组之中指明继承的基本类'''Represents a teacher.'''def __init__(self, name, age, salary):print 'Teacher.self = %d'%id(self) SchoolMember.__init__(self, name, age)self.salary = salaryprint '(Initialized Teacher %s)' % self.namedef tell(self):SchoolMember.tell(self)print 'Salary: "%d"' % self.salary#class Student(SchoolMember):'''Represents a student.'''def __init__(self, name, age, marks):print 'Student.self = %d'%id(self) SchoolMember.__init__(self, name, age)self.marks = marksprint '(Initialized Student %s)' % self.namedef tell(self):SchoolMember.tell(self)print 'Marks: "%d"' % self.marks#os.system('cls')t = Teacher('Mrs. Shrividya', 40, 30000)s = Student('Swaroop', 22, 75)print # prints a blank linemembers = [t, s]for member in members:member.tell() # works for both Teachers and Students'''summary:Python是一个高度面向对象的语言。1）self表示对象本身，在调用父类的方法传入self时，传入的还是子类对象，此时子类实例仅仅作为父类的实例2）id(object)Return the “identity” of an object. In CPython implementation, this is the address of the object in memory.id(self)返回的是当前对象的内存地址3）多重继承：类的定义时，如果在继承元组中列出一个以上的类，该类被称为多重继承。'''
-------end------
0 0