instance meaning in python code example

Example 1: what is a ython instance

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

Example 2: instance method in python

# Instance Method Example in Python 
class Student:
    
    def __init__(self, a, b):
        self.a = a
        self.b = b 
    
    def avg(self):
        return (self.a + self.b) / 2

s1 = Student(10, 20)
print( s1.avg() )