Functional vs Object Oriented Programming in Python

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Answering some common questions on functional vs objected oriented in programming and then showing a few code examples to demonstrate a pure function and an object that stores state with a function that modifies the internal data.

Timestamps:
0:00 - Introduction
0:05 - Is Python an object oriented programming language
0:33 - Can you do functional programming in Python?
0:53 - Common object oriented languages used in a company
1:10 - Differences between functional and objected oriented programming
2:15 - How to make good classes in Python
4:05 - Unit testability of functional code compared to classes
4:35 - Writing a functional math module
7:18 - Why functional programming is good for concurrency
8:01 - Using list comprehensions for functional transformations
9:35 - Converting our functional code to a do_math class (should be DoMath)
11:40 - Altering the state of our class data
13:35 - Outro

Object oriented code:

Article:

[pcl]

One of the best videos explaining this OO vs Functional programming. Concise, with clear examples and a coding demo which is the best way to understand the concepts imo. This deserves more views. Great work.

[TheFirearmada]

Thanks for the video, just getting back in to coding after a LONG break. C++ was what I used to program in, now everything at work is using Python. Fun times learning it.

[RealCaptainAwesome]

Cool video. I have zero experience with Python (unless you read my resume) this is a great intro.

[TastyTales]

man... this is very much an unresearched video. Why you want to pass functions to functions? -> dependency injection. Also functional programming is about immutable data structures, types, and composition everywhere. We didn't even see a hint of composition, no currying, no map, filter, reduce. We didn't even see the tip of the iceberg. Every time you say "I'm not sure why you'd wanna do this" -> that is an indicator of needing more research. Recommentdation: /watch?v=srQt1NAHYC0

[romangeneral]

I love the war between Object Oriented and Functional. Can't we all just get along!!!

[bend.]

Could you call the functional commands in your class methods? I realize here it would just be extra work. Extract variables from self and input to external function from method. However, let’s say you have a bunch of existing complex functions that you don’t want to have to rewrite as methods. Is it had practice to strip the properties of a class as inputs for a function to prevent having similar methods and classes existing in your code library?

[xpkareem]

So functional language is just an OO language but you don't use objects or classes? Or to put it another way, just use a OO language poorly?

[jesuisravi]

you speak very well, but you don't magnify the code so the video is very hard to follow. Please magnify.