Python中类的继承代码实例

相对于c++的继承编写，python更简洁，而且效率也是很高的，下面编写一个简单python的继承例子。

#!/usr/bin/python  
#filename: pyclass.py  
 
class member:  
        def __init__(self, name, age):  
                self.name = name  
                self.age = age  
                print 'member init:%s' % self.name  
        def tell(self):  
                print 'name:%s,age:%d' % (self.name, self.age),  
 
class student(member):  
        def __init__(self, name, age, marks):  
                member.__init__(self, name, age)  
                self.marks = marks  
                print 'student init:%s' % self.name  
        def tell(self):  
                member.tell(self)  
                print 'marks:%d' % self.marks  
 
class teacher(member):  
        def __init__(self, name, age, salary):  
                member.__init__(self, name, age)  
                self.salary = salary  
                print 'teacher init:%s' % self.name  
        def tell(self):  
                member.tell(self)  
                print 'salary:%d' % self.salary  
 
s = student('tom', 20, 80)  
t = teacher('mrs.huang', 30, 50000)  
 
members = [s, t]  
for mem in members:  
        mem.tell() 

运行效果：

[root@localhost hhl]# python pyclass.py   
member init:tom  
student init:tom  
member init:mrs.huang  
teacher init:mrs.huang  
name:tom,age:20 marks:80  
name:mrs.huang,age:30 salary:50000 

我们同样编写同样效果的c++例子：

//filename: class.cpp  
#include <string.h>  
#include <iostream>  
using namespace std;  
 
class member  
{  
public:  
    member(char *n, int a);  
    void tell();  
private:  
    char name[10];  
    int age;  
};  
 
member::member(char *n, int a)  
{  
    memcpy(name, n, sizeof(name));  
    age = a;  
    cout<<"member init:"<<name<<endl;  
}  
 
void member::tell()  
{  
    cout<<"name:"<<name<<","<<"age:"<<age<<",";  
}  
 
class student:public member  
{  
public:  
    student(char *n, int a, int m);  
    void tell_s();  
private:  
    int marks;  
};  
 
student::student(char *n, int a, int m):member(n, a)  
{  
    marks = m;  
    cout<<"student init:"<<n<<endl;  
}  
 
void student::tell_s()  
{  
    member::tell();  
    cout<<"marks:"<<marks<<endl;  
}  
 
class teacher:public member  
{  
public:  
    teacher(char *n, int a, int s);  
    void tell_t();  
private:  
    int salary;  
};  
 
teacher::teacher(char *n, int a, int s):member(n, a)  
{  
    salary = s;  
    cout<<"teacher init:"<<n<<endl;  
}  
 
void teacher::tell_t()  
{  
    member::tell();  
    cout<<"salary:"<<salary<<endl;  
}  
 
int main(void)  
{  
    student s("tom", 20, 80);  
    teacher t("mrs.huang", 30, 50000);  
      
    s.tell_s();  
    t.tell_t();  
 
    return 0;  
} 

运行效果：

[root@localhost hhl]# ./class   
member init:tom  
student init:tom  
member init:mrs.huang  
teacher init:mrs.huang  
name:tom,age:20,marks:80  
name:mrs.huang,age:30,salary:50000 

这两者的运行效果是一样的，但是python更简洁些。。。