Python OOP Tutorials | Composition and Aggregation

In this Python Tutorial for Beginners video I am going to show How to use Class Composition in Python. Composition allows us to delegate some responsibility from one class to another class.
In Class Composition one class acts like a Container and other acts like a content. Composition represents "part-of" relationship.When there is a composition between two Python classes , the content object cannot exist without the container object.

In this Python Tutorial for Beginners video I am going to show How to use Class Aggregation in Python. Also I am going to give the Difference between Aggregation and Composition with a python example.Aggregation represents Has-A relationship.
Aggregation has a unidirectional association i.e. a one way relationship between associated classes.In Aggregation, both the associate class objects can survive individually.

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[Christina__V]

I dont know who you are, but I hope you're doing well.
This is the best beginner friendly explanation I've seen BY FAR and you're a real lifesaver.
THANK YOU!!

[ReighKnight]

Man, you are so criminally underrated. This is not fair. Your video was very good.

[rantalbott]

Great job. Using "has a" and "part of" as a way to reinforce the descriptions of the two different relationships was brilliant.

[luispacheco]

Thank you for everything, I'm not an expert in English but I understood every word you said, you´re terrific. Greetings from Mexico.

[Playmade-]

I’ve got an exam soon and this really clarified the differences. Thanks

[gavdownes]

Very helpful. Thank you. Repeatedly going back and forth in your descriptions helped a lot

[qaisereyes]

Genuinely very helpful video and your way of teaching are superb. You really make me easy to understand. Thanks

[alexl]

Thank you for this practicaly explanation. I understood composition and agregation before, but you explained it here so detailed - I never thought about the three diffrent charakteristics of them.

[shamiqureshi]

Superb Sir... grt8
crystal clear explaination....I want more videos on Python Advanced concept

[ArhamKhan]

Thank You So Much Sir. It is a great explanation.

[BoubakerElbikam]

simply and wonderful explanation thank yoy

[azzamjoy]

Thank you for making this video, great explanation and applications of the concepts!

[linlinli]

thank you so much, this is literally good video!

[Garczek]

What if we would like access pay through Employee class? how to do it?

[leopoje]

Please note that I followed the same example code and I am getting an error under the total_salary method, and trying to call annual_salary method implemented under the Salary class The exact line is return self.obj_salary.annual_salary(), its expecting a parameter, Its either something changed with latest python release or something.

mouse over is displaying a hint : Parameter 'self' unfilled

[dmqinbl]

man I'm confused between composition and dependency, I know they are represented in different ways in UML with different pointers.

[nandinirm]

Please anyone answer this ...
In the above example in aggregation ...inside employee constructor ..instead of writing
self.obj_salary =salary
Can we write
self.salary =salary?

[AayushSharma-swtt]

there is a semicolon in aggregation line 13 but still the code working????

[FranEnchufes]

8:13
watch out 👀 *has.a* is Composition, not Aggregation. has.a if you think about it is like part.of
edit: I am not sure anymore