# in composition we have delegates some responisibilities from subclass to superclass or vice versa if it don't have is-a relation for eg. employee and salary

class Salary:

def __init__(self, pay, bonus):

self.pay = pay

self.bonus = bonus

def annual_salary(self):

return (self.pay*12) + self.bonus

class Employee:

def __init__(self, name, age , pay, bonus):

self.name= name

self.age= age

self.obj_salary = Salary(pay, bonus)

def total_salary(self):

return self.obj_salary.annual_salary()

emp = Employee('rahul', 25 , 15000, 10000)

print(emp.total_salary())