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Give an example of Aggregation in Python

Aggregation is a week form of composition. If you delete the container object contents objects can live without container object.
class Salary:
    def __init__(self, pay):
        self.pay = pay
 
    def get_total(self):
        return (self.pay*12)
 
 
class Employee:
    def __init__(self, pay, bonus):
        self.pay = pay
        self.bonus = bonus
 
    def annual_salary(self):
        return "Total: " + str(self.pay.get_total() + self.bonus)
 
 
obj_sal = Salary(600)
obj_emp = Employee(obj_sal, 500)
print(obj_emp.annual_salary())
 
Sample output of above program.
Total: 7700
Create class
__init__() method
Empty Class
Type Keyword
Class Method
Object properties
Data Attributes
How to create and use custom Self parameter?
Delete object
Self parameter
Static Class variables
Class variables
Overloading
Iterator
Magic method
__init__ and __call__
__new__ and __init__
Indexing and Slicing
__getattr__ and __setattr__
__del__
Create Private members
Encapsulation
Aggregation
Composition
Multi-level Inheritance
Polymorphism
Private members
Abstract class in Python
Override default constructor
Abstract class
Use of Super
Multiple inheritance
Super in Python
Method Resolution Order
Singleton class
@staticmethod and @classmethod
Metaclasses in Python
Metaclasses use cases
Decorators example
Function decorators
Decorator
Create decorators
Parents classes
Copy object properties
Iterate over object
Print properties
Compare object type
Object as an argument
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