Class in Python

 

Class deceleration in Python

Class is a collection of relative states and behavior

• State is nothing but class variables

• Behavior is nothing but methods (function inside a Class)

Syntax :

            keyword class class_name :

                            relative state

                            relative behavior

Example:

 #program to define class

 class Team :                                        # class name
     team_name = "INDIA"                             # relative state / class variable
     def display_team_member(self,player_list):      # behavior / method
         for name in player_list :
             print(name)

To access states and behavior of class, a reference to Class is required which is known as Object

Syntax :

        variable_name = class_name() 

variable_name will be an object to class. Class gets memory once object is created.

Example : 

 #program to define object to a class

 team_1 = Team()            # creating an Object to class

Example 1 : 

 #program 

 class Team :
     team_name = "INDIA"
     def display_team_member(self,player_list):
         for name in player_list :
             print(name)

 teamA = ["Sachin", "Dravid", "Ganguly", "Dhoni"]


 team_1 = Team()
 print("Team Name : ", Team.team_name)
 team_1.display_team_member(teamA)

 #output

 Team Name :  INDIA
 Sachin
 Dravid
 Ganguly
 Dhoni

Example 2 : 

 #program

 class Team :
     team_name = "INDIA"
     def display_team_member(self,player_list):
         for name in player_list :
             print(name)
         print()

 teamA = ["Sachin", "Dravid", "Ganguly", "Dhoni"]
 teamB = ["Ajay", "VVS Laxman", "Gambhir", "Raina"]

 team_detail = Team()
 print("Team_name : ", Team.team_name, "-A")
 team_detail.display_team_member(teamA) 

 print("Team_name : ", Team.team_name, "-B")
 team_detail.display_team_member(teamB)

 #Output

 Team_name :  INDIA -A
 Sachin
 Dravid
 Ganguly
 Dhoni

 Team_name :  INDIA -B
 Ajay
 VVS Laxman
 Gambhir
 Raina