instance variable python

1An object belonging to a class. e.g. if you had an Employee class, each 
2individual employee would be an instance of the Employee class

1class Car:    wheels = 4    # <- Class variable    def __init__(self, name):        self.name = name    # <- Instance variable

1class Person:
2  def __init__(self, name, age):
3    self.name = name
4    self.age = age
5
6p1 = Person("John", 36)
7
8p1.age = 40
9
10print(p1.age)
11---------------------------------------------------------------
1240

1
2class Dog(object):
3    def __init__(self, name, age):
4        self.name = name
5        self.age = age
6
7    def speak(self):
8        print("Hi I'm ", self.name, 'and I am', self.age, 'Years Old')
9
10JUB0T = Dog('JUB0T', 55)
11Friend = Dog('Doge', 10)
12JUB0T.speak()
13Friend.speak()

1# Instance Method Example in Python 
2class Student:
3    
4    def __init__(self, a, b):
5        self.a = a
6        self.b = b 
7    
8    def avg(self):
9        return (self.a + self.b) / 2
10
11s1 = Student(10, 20)
12print( s1.avg() )

1class Car:    
2  wheels = 4    # <- Class variable    
3  
4  def __init__(self, name):        
5  	self.name = name    # <- Instance variable