Python class and inheritance explained

Python is simpler and more efficient than C + + inheritance, so write a simple Python inheritance example below.

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 ()

Operating effect:

[Root@localhost HHL]

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

We also write C + + examples of the same effect:

#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;

}

Operating effect:

[Root@localhost HHL]

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

It works the same, but Python is more concise ...

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