Python面向对象
1，使用class Name(parent,...)关键字定义类
2，任何自定义类默认从object类继承
3，类的构造函数__init__和析构函数__del__
4，__slots__接受一个tuple，用于限制类属性，不会被继承
5，代码内提供两种属性访问器函数@property定义方式
6，以双下划线开头的变量和函数是私有的不能之间访问
7，父类构造函数__init__的调用方式有super(class, self).__init__(...)或在使用class.__init__(self,...)
8，子类继承或者覆盖父类的属性和成员函数，具有多态特性
9，@staticmethod定义静态方法 @classmethod定义类方法
10，类成员函数定义，默认第一个参数必须是self对象
11，可以访问内置类属性和重载内置成员方法和运算符
12，在Python里，一切皆对象！
#!/usr/bin/python
#-*- coding: utf-8 -*-
class Person(object):
"""docstring for Person"""
__slots__ = ('__name', '__age')
def __init__(self, name, age):
print 'Person __init__', name, age
self.__name = name
self.__age = age
@property
def name(self):
return self.__name
@name.setter
def name(self, value):
self.__name = value
@property
def age(self):
return self.__age
@age.setter
def age(self, value):
self.__age = value
def say(self):
print 'Hello, My Name is %s, My age is %d' %(self.__name, self.__age)
def __del__(self):
print 'Person destruct!!!', self.__name
class Student(Person):
"""docstring for Student"""
def __init__(self, name, age, score):
print 'Student __init__', name, age, score
super(Student, self).__init__(name, age)
self.__score = score
@property
def score(self):
return self.__score
@score.setter
def score(self, value):
self.__score = value
def say(self):
print 'Hello, I am a Student, My Name is %s, My age is %d, My score is %d' \
%(self.name, self.age, self.__score)
def info(self):
print '__dict__ = ', self.__dict__
print '__doc__ = ', self.__doc__
print '__module__ = ', self.__module__
def __str__(self):
return 'Student(%s, %d, %d)' %(self.name, self.age, self.__score)
def __del__(self):
print 'Student destruct!!!', self.name
class coding(object):
"""docstring for coding"""
def __init__(self, code):
print 'coding __init__', code
#super(coding, self).__init__()
self.__code = code
def work(self):
print 'I am coding by', self.__code
def __del__(self):
print 'coding destruct!!!', self.__code
class Employer(Person, coding):
"""docstring for Employer"""
def __init__(self, name, age, code, salary, phone, address):
print 'Employer __init__', name, age, code, salary, phone, address
#super(Employer, self).__init__(name, age, code)
Person.__init__(self, name, age)
coding.__init__(self, code)
self.__salary = salary
self.__phone = phone
self.__address = address
def infomation(self):
print 'My name is', self.name
print 'My age is', self.age
print 'My salary is', self.__salary
print 'My phone number is', self.__phone
print 'My address is', self.__address
self.work()
def __del__(self):
print 'Employer destruct!!!', self.name
def setSalary(self, value):
self.__salary = value
def getSalary(self):
return self.__salary
salary = property(getSalary, setSalary)
@staticmethod
def staticMethod():
print 'staticmethod test!'
def main():
#Person
p = Person('ZhangSan', 20)
print p.name
print p.age
print p.say()
p.name = 'LiShi'
p.age = 32
print p.name
print p.age
print p.say()
#Student
s = Student('Wanwu', 18, 80)
print s.name
print s.age
print s.score
s.say()
s.name = 'ZhaoLiu'
s.age = 16
s.score = 99
s.say()
s.info()
print dir(s)
print s
#Employer
e = Employer('Lilei', 26, 'Python', 8000, '123456789', 'China')
e.infomation()
e.salary = 8888
e.infomation()
Employer.staticMethod()
if __name__ == '__main__':
main()