Python OOP Tutorial 1: Classes and Instances

In this Python Object-Oriented Tutorial, we will begin our series by learning how to create and use classes within Python. Classes allow us to logically group our data and functions in a way that is easy to reuse and also easy to build upon if need be. Let's get started.
Python OOP 1 - Classes and Instances - • Python OOP Tutorial 1:...
Python OOP 2 - Class Variables - • Python OOP Tutorial 2:...
Python OOP 3 - Classmethods and Staticmethods - • Python OOP Tutorial 3:...
Python OOP 4 - Inheritance - • Python OOP Tutorial 4:...
Python OOP 5 - Special (Magic/Dunder) Methods - • Python OOP Tutorial 5:...
Python OOP 6 - Property Decorators - • Python OOP Tutorial 6:...
The code from this video can be found at:
github.com/CoreyMSchafer/code...
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#Python

[@prashanthib4488]

Tears from my eyes when I finally understood what "self" keyword here is all about. Thank You!!

[@kristypolymath1359]

Mirrors are miracles :D

[@muhammadmuinmundzir9981]

Same here lol

[@Thenpakkam_Manibalan]

Love from Chennai ❤️👌👍

[@aradhyasharma6483]

Tears from my dong idk what's wrong

[@madhubabukencha5037]

Same feeling

[@kerwinso]

In my 3 years of trying to learn object-oriented Python, not a single teacher adequately explained what the "self" keyword was for -- until now. Thank you again Mr. Schafer!

[@oc4026]

If it's taken you three years, I'd just stop trying tbf.

[@forgandorgan7552]

dude 3years??

[@sebastianskopek]

im so happy I watched this video 2 weeks in :)

[@jadedaniels5076]

One tutorial I used said "We'll explain this concept later" and just never addressed it again

[@copyrightedchannel4939]

3 yrs 😆

[@nickmarshallvfx]

This series of lessons is honestly some of the best training I've ever seen. It's so clear and concise. The examples are perfect too. I'm writing this 4 years after they were released and they still hold up perfectly.

[@shashankbangera7753]

2022 and still one of the most intuitive and relevant videos on OOP in KZbin. Thanks Corey for this playlist, looking forward to complete the whole series within this week

[@felipeporto2758]

Not all heros wear capes. Corey you are the man!

[@theweirdpartofyoutube8662]

NO CAPES!

[@sarthak0diwan]

maybe he wears a cape, we haven't seen the guy.

[@Jonathan-od5xc]

That was the most fantastic explanation of classes I have ever seen. Thank you very much!

[@ashfaqrahman2795]

He actually wears a cape when he works. Also when he sleeps.

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did you just assume that he doesnt wear a cape?

[@TrungNguyen-ld7hz]

I've just shown this video to my teacher. Now he's my student.

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Laugh so hard for this...

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this is the best comment so far

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😂😂

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Haha lol seriously??

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Goru Kun you’re joking right? You didn’t seriously think this even happened

[@ismailniyaz5167]

Simple, concise and an amazing piece of work! Not only did I understand something I've been struggling to wrap my head around for a while, but I can now explain everything to my classmates too. Thanks a lot for making me look like some sort of Python Jedi.

[@julia_orchid_cali]

Corey, thank you 1000 times! Very good explanation of object-oriented concept. Understanding self was a challenge and you were able to help it to sink in. Forever grateful!

[@michalmikulasi5193]

This tutorial about classes cannot be better. I really mean it, its just perfect. In my life i may have commented 3 videos here on youtube altogether, but this time i really needed to say THANK YOU, because you saved me lot of time, effort, and nerves. I am just looking forward to your other videos. Amazing work!

[@coreyms]

Awesome. Thanks, Michal!

[@michalmikulasi5193]

its good to see that not only programmers or people who wanna learn watch these videos, but also morons do

[@evelynpunzalan4606]

Corey Schafer sir what application did you use? And how to download it for free? Thank you so much in advance :)

[@evelynpunzalan4606]

Michal Mikuláši what application is that sir? Is it notepad++?

[@ananthvankipuram4012]

John P Smith

[@yogeshkumarshankariya642]

University professors should learn from you regarding " how to teach students". Love from India, sir.

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Government funded bull shit. I can learn complex mathematics, science and physics online for free better then a $100,000 university degree could teach me.

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Yes🎉

[@occasionaltraveler]

To everyone who is learning through Corey's channel. Do not ever doubt yourself whether you will land a job or not. You will, because I did by watching his videos. Thanks Corey. You are the best teacher.

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That is AWESOME!!! So happy to hear you were able to land a job!

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What specifically did you learn form this Channel ? Python or else ?

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@@ayeshavlogsfun Of course Python

[@ayeshavlogsfun]

@@occasionaltraveler Did you learn whole python from this Channel mean beginner to Advance ? And what type of job are you doing using python ?

[@fagbenromodupeola3095]

thanks for this motivation

[@Matt-no4oy]

Easily one of the most thorough and easy to follow guides! Most other videos explaining classes do not articulate their purpose as useful as Corey!

[@vclarke4433]

I honestly wish I just sat in my room and watched your videos rather than going to university. Much clearer and much cheaper and less stress.

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Whats stopping you?

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@@mrpanda7777 Sat is a past tense

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what you study in college is more important than you think!

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@@VMYE-ir6vw balls

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@prostavse we are the same

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You are better organized than some paid courses. Bravo !

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*all paid courses.

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@@niteshchauhan4625 Thanks God, I haven't tried them all, but you may well be right! Much better than Udemx....

[@kircyclone]

Yeah. That's what I thought.

[@lordshiv9290]

that's what i was gonna say 😂

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@@meatyout Udemy is just awful. Pretty, packaged courses. No content.

[@petrahrabakova752]

After the whole semester of object oriented programming, I finally fully understood the fundamentals of it. Love your tutorial! Going to watch the next one right away :) Thank you!

[@santiago0072002pr]

2021 and this is one of the best videos I have ever seen someone teaching Python. I wish there were videos of data structures and algorithms in python taught by you sir.

[@angadsingh6478]

""SELF"" the biggest mystery finally solved

[@nonalcoho]

same here

[@adithyavarman6316]

for mee too

[@thomash7247]

yes

[@salbayrak]

I don't know you but before recording this video, it is crystal clear that you asked yourself how can I be explaining better the concept of class/object to novice learners and you just nailed it. Huge thanks for great work man. We all humans should consider of adding perfectness to our professions. Cheers from Istanbul!

[@donaldkeith139]

Brilliant stuff! So clear and very well presented because there's no extra talking or fluff - straight to the point.

[@manish-gupta]

No one can teach Classes in python better than this. Great tutorial for beginners. Thank you!!!

[@sreekanthreddylingamdinne363]

i am completely beginner to coding.after started watching you're videos find coding is awesome.i have suggested these videos my other 3 colleagues to learn python basics.Gained lot confidence.Thank you.Thank you from India.

[@rogerwilco6725]

A month of confusion fixed in 15 minutes. Excellent job. Subbed.

[@baterickpatman]

this is SO helpful for beginners (even 6yrs later!), thanks so much! Your explanations are clear n simple, and I think this channel has now become one of my main resources for Python. You're one sub closer to 1 million!!!

[@jacktyler924]

Corey, these tutorials are a pure gem! Keep up the great work! Thank you for your efforts to make it as easy to understand as possible.

[@HamroMotors]

Literally I was crying when I finally understand actual work of "self" keyword. Saviour !!!

[@juliusarceo3800]

Wow, you did a fantastic job explaining this concept! I am learning to code for the first time and was not able to fully grasp this material until I saw your video. Thank you so much. I look forward to watching more of your tutorials.

[@lionatticus9743]

Oh my! I’ve been writing Python code for a few months now. I’ve learned a lot, but this! This is gold. Game changer.

[@jarrettguthrie1670]

This defiantly got my sub. People always seem to jump around, or leave things out, or mix terms when describing classes. This has been the most straightforward explanation I've come across.

[@hassanmuhammad8520]

This is the most amazing tutorial/ explanation on introduction to classes in python on the whole of KZbin. Thank you so much

[@pxscrill]

OMG. I have been struggling to wrap my brain around all this, and you explained it so well! It's actually coming together now. Thank you so much!

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your vid's have become my first and last stop for programming knowledge on KZbin. they never fail to clear up my understanding of each concept.

[@muneebrehman7463]

Out of the many years I've watched videos about anything on KZbin, I can count on my hands the number of times I've actually commented on a video. However, the way Corey explained Python OOP through this video, especially a week before my computer science exam, I just had to drop a comment. This is one of the best and most informative instructional videos I've ever seen, like ever even outside of computer science. Well done!

[@cheikhoudiallo1560]

loving it. I just started learning python and its my first programming language. I love how this guy explains new words like classes and instances in such a clear way!! thank you

[@ralf1273]

The most well explained lesson about classes and instances, i've ever heard. i finally got it Thanks Corey...u'r the best

[@darkscienceyt]

Absolutely superb presentation! Worlds better (and more useful) than Udemy!

[@runningforver5958]

I honestly dont understand why people like this dont make udemy courses... Every second udemy course is just no explanations

[@intothevode]

Better than codeacademy too

[@harshitaseeja3290]

ikrrr, I had a hard time understanding this through Jose

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@@intothevode no wayyy

[@zackerystarling2352]

yes definitely!

[@shawnsweeney117]

Corey. I have taken Java classes at a local university and I am a programmer from the 1980s. Classes really confused me when I took Java. Just couldn't get my head wrapped around the vocabulary. Your explanation was spot on. Thanks a great deal. Very appreciative of you taking the time to help folks like me.

[@AMINE-yy3zb]

I would give the nobel prize for this explanation. Thank you Schafer.

[@HaileeMiu]

THANK YOU! I just went through the OOP portion of a paid tutorial but still didn't feel comfortable with the content. So I search and found you. Great thoughtful and thorough explanation.

[@Daniel-cl6hj]

Started learning Python a few days ago. So glad I found this video this early on. You've saved me a lot of time and head scratching.

[@sketchfam8037]

I’ve never experienced such clarity, deep teaching intent and professionalism in my life . This was astounding

[@danverzhao9912]

This is the most clear explanation and demonstration on KZbin, I paid 120$ for a python class and it’s not as clear as this. Good job man keep up the good work!

[@tomduda1]

I teach CS and Cory's channel is always my recommendation when a students needs supplemental material. Cory is my go to guy when I can't quite get through a particular student. Thank you Mr. Schafer for saving my butt more than a few times. Ironic note. I actually have a dog named Brooklyn lol

[@lim5400]

thank you! I took a python boot-camp starting with no knowledge and the explanations were really difficult to follow so I appreciate you starting with the manual code and then translating that to a class!

[@manikandansrinivasan9816]

You are the only reason I am learning Python.. You are teaching stuff what my college couldn't do in a year

[@maniece100]

I can't believe it, impossible became possible. I now understood what is "self" thanks a lot man. Can't thank you enough.

[@taimooralibukhari]

My teacher took whole semester for this still I wanted to withdraw but this guy here.......did that in 15 min Dayum!

[@popinobien4621]

I love how well Python classes are explained in this video, thank you! My current challenge is that the data I have is in the form of a list of dictionaries and I would like to pass them onto a class.

[@balrajphotography8035]

I was trying to learn classes from other sources but here I am understanding it the way I wanted. Thank You, Corey Schafer

[@zulfi1]

i spend hours and hours on youtube to get a clear view and concept of "__init__" and "self" finally found this video. no words simply GREAT job done.

[@jessesinger4790]

I also think this was great. Not only do you explain how to do it, you give an example of how to do it, and ALSO give reasons for WHY to do it.

[@paulamaged3312]

I am going nuts over how effective and simple your explanation was over the multiple sources that had caused me severe phobia of "classes"! Thank you SO MUCH!!❤

[@williamhu9567]

Straightforward, to the point, and with detailed explanations of what stuff is and why it’s the way it is.

[@vincentjean6756]

I have struggled with OOP programming for years. Always worked around it. This made me understand Classes finally! Thank you very much.

[@isaiahlopez51]

I love how you go through examples of "manually" setting up classes and proceed to use the constructor with the INIT method. out of all the python videos this one explains it amazing. I also appreciate the way you explained class and instances and the differences.

[@hughlilly]

"That's not extremely important to know" is such an understatement -- I can't believe how clearly you explained "self"! You are amazing.

[@therevivalknight4678]

One of the best explanations of class instances available on KZbin

[@fireflynahian6878]

I've watched a lot programming tutorial in KZbin... But there are no videos as good as yours... to be honest, YOU ARE THE BEST TEACHER

[@hadiakbary410]

Have been searching all over the internet for a week to understand what classes are for and what is self here, this example was the best way to explain classes in python so far from videos and materials I have seen. Thank you.

[@architjain6749]

This is one of the best python OOP series on KZbin. Thanks Corey !!

[@voynich7119]

Perfect. I even ran into the error with the positional arguments when I tried to create a method before you explained it. I was very confused but like a minute later you just explained it and it totally made sense. Thanks for the easy to understand and helpful tutorial.

[@tobilliontv7276]

I learnt more in this 15mins video than in my entire semester

[@Arthurk346]

Seems like you never payed a visit to your school

[@88Timur88Bahmudov88]

@@Arthurk346 i can confirm that some universities are so dumb that the statement above is true sometimes

[@user-rt9pw2jk8r]

Best explanation of 'self' I ever heard. He covered the concept of class from so many different angles and he addressed all those question that a beginner asks while learning about the classes and especially 'self'.

[@mikeshea2526]

Just... thank you. A clear concise explanation of what classes are, how and why the syntax works, and a realistic example of how to do it. And nobody died. We're all still here.

[@basetroll1627]

I tried for so long to understand classes and what is behind it: 15 minutes of your explanation and it made Click! Thx Corey Schafer!

[@chenlmbd]

I don't usually comment on KZbin, but I just can't help to tell you how amazing your videos are. You are making programming exciting again for me! I am so glad to have found you! Thank you so much for making these videos!

[@esperanzaa7381]

My dude, bless you. I have been so confused about classes since I started and apparently nobody wants to teach you anything about them after beginner's classes.

[@brendensong8000]

Thank you for this video. it's crystal clear. When a true expert teaches a subject, it stands head and shoulders above the rest!

[@mcdouglekyle]

Round of applause for you! That was so clearly explained. I really appreciate you making videos. Please keep them coming. I would take a class from you if you ever did that. No joke

[@kabirajadhikari2092]

Sir I finally master stuffs of object oriented. Thanks a lot for great help. You deserve best youtuber.

[@alexwalters824]

This is so good! I just started learning to code in university 4 months ago and I've been struggling to find good resources to learn outside of the classroom. This is exactly the kind of content I've been searching for!

[@qualimania]

This is hands down the best OOP tutorial that has ever been created. Superb job!

[@arkahm]

Finally I found someone who can ACTUALLY explain the use of self ... THANKS COREY!!!!

[@nsterui]

You've explained this in a way others have not been able to, without over-simplifying or over-complicating. Much appreciated!!! Thank YOU!

[@khorshedalam1589]

You are truely a genius, 'Self' parameter wasn't clear to me, I just remember it to use it but why it is there and what actually it does I didn't know, but now after saw your tutorials, its very clear to me. Thanks corey!

[@hemilpatel925]

simple, short, and to the point explanation. especially "self". Thank you, Corey Schafer

[@blazejp6204]

Hello. I have watched quite a few videos explaining classes in Python and this one is the best. I like Your clarity of presentation. I've learned a lot. Thanks

[@MouradMourad1000]

clear, efficient, short, so what else should we expect. thanks a lot man, you are the best

[@karasu5354]

I took the class about a year ago and was confused what "self" is until now, thanks bro, you literally teaches better than university professors

[@hashtags_YT]

Man, this 4 year old tutorial is better than any other tutorial I've ever seen including up to date ones. Thought I'd leave my comment on this masterpiece.

[@MinhLe-xk5rm]

Great tutorial man! I feel like classes and objects in Python seem so much easier to understand compared to C++. Your explanation helps a lot too!

[@nackyding]

BEAST tutorials! Best I've seen on youTube, hands down!

[@ig88andribs]

Thank you Corey I'm really glad I found your channel. Beautifully conscise and at the perfect tempo for me - I get it now.

[@michaelallison7259]

Thanks mate, been trying to understand OOP and watched dozens of videos and couldn't follow it until i saw your video. This was a great help. Thank you very much.

[@Eren-qo1lu]

I'd say that these details (how classes work, what instances are, what 'self' does and what happens in the background) are what distinguish basic and intermediate knowledge. And if you at least read some about it, you may detect similarities between different programming languages, and realize that it's often 'the same', but with a slightly different syntax. At least that's how i understand it. Thanks Corey, thank you for not being lazy (like me) and actually script, record, edit a video to help others understanding a topic which is very important.

[@HarshitTewari20]

If only our universities were filled with professors like you. God damn it! I feel as if I've wasted an entire year trying to learn something which you explained so easily and comfortably in 15 mins!! Thank You for the wonderful explanation.

[@sumit1234567891011]

crisp and clear. 14 mins and its all clear about class and instance. Thanks

[@iiDreamzxc]

Struggled so much with understanding classes and this helped me so much, thank you Corey!

[@franky0226]

YES! THIS IS IT, I FINALLY UNDERSTOOD WHAT "SELF" keyword IS ALL ABOUT ! thank you so much !

[@heyward]

The best explanation I have seen of Python classes and instances! From a complete beginner

[@PaaulBowdry]

Literally, just finally cracked it after watching these videos many many times since 2021 - Each instance is store in a variable and then that variable is called just like a function with its arguments. Many thanks you are good teacher and well presented!

[@the-suspect]

This is one of the few videos on YT that explains 'self' properly, many thanks!

[@senk0than]

I wish you start something like Corey’s academy to unfold all the programming fears. Hands down the best video on OOPS

[@EduljiBharucha]

Clearest explanation I've seen. Thank you!

[@zes7215]

no such thing as importax or not bout it, ts a toolx, nonex. no st as clear or not

[@bakhshizulfiqarmanzur8988]

Zes dude you good?

[@BinswangersDisease]

Very clear presentation,. I am finally understanding what all this "Class" stuff is about, after many failed attempts with other videos . At age 73 it takes me longer to absorb material, so I run it with many rewinds.

[@animelover-yj9om]

Learning python for cyber security in an online class, and OMG, this made so much more sense then the book! Thank you so much!

[@sylargray8913]

Mate, I have hit gold. You legit explained OOP to me like it was so fucking simple. OOP is easyly one of the hardest concepts in computer programming but you explained it in a way i think anyone can understand. Thank you so much!

[@coreyms]

Awesome... that's nice to hear. Glad you found it useful!

[@lilfoxxxx5785]

I'm pretty sure I grasped the concept in the first 5 minutes, the pieces were finally coming together. Corey definitely made it sound so simple!

[@LacksonMunthali]

The "self" explanation is what makes the video more valuable. 😊

[@Rarez2]

Huge thank you for describing "instance of a class", as well as mapping "class methods" to just "functions belonging to a class"!! I really appreciate the low-level/actual implementation, instead of a high-level definition which leaves rooms for questions. Also another HUGE thank you for showing the hex memory address :). Trying to pickup Python over the course of a week, coming from C/C++ lol

[@ndeoligence8]

00:00 Introduction 00:33 Why use classes 01:09 A simple class 02:13 Class vs Instance 04:43 Initializing instance attributes with `__init__` 09:00 Custom instance methods 11:35 Importance of passing `self`

[@pritiagale4204]

Link for this topic

[@bucky5269]

People like you are why I graduated lmao

[@Ok-zq6cg]

@@bucky5269 yup

[@ParleysWoodedJourney]

good human

[@noirceurblanche4911]

I fucking love you, that's it. I've been into python for several months already and never understood why people were using classes. But now, I do understand. Thank you :)