Still confused about "self" in Python? Then watch this!

Self is a mysterious thing when you start creating classes in Python. In this video you learn why methods have self as first parameter and how Python passes a value for it automatically when calling the method.
D E E P E R D I V E:
Take a deeper dive into self by learning how bound methods work in Python: • How bound methods are ...
C H A P T E R S
0:28 What is self?
0:35 Why does a method have two parameters and when you call the method you only have to pass one argument?
1:29 The instance and the arguments are packed into a method object
F R O M T H E D O C S
"If the name denotes a valid class attribute that is a function object, a method object is created by packing (pointers to) the instance object and the function object just found together in an abstract object: this is the method object. When the method object is called with an argument list, a new argument list is constructed from the instance object and the argument list, and the function object is called with this new argument list."
docs.python.or...
M Y O N L I N E T R A I N I N G
🎓Like my style of teaching? Try free chapters of my online courses: pythonforevery...
#pythonforeveryone #programming #self

[@natan.mendes]

clicked because the thumbnail seems like dostoievsky

[@python-for-everyone]

Haha, you are right. It does!

[@EdwinCrown]

This was the most dummy proof explanation ever, after 8 youtube videos. This was the one with the eureka moment!!! Thanks Soooooo Much

[@python-for-everyone]

That is a great compliment. Thanks!

[@SriramTantri25]

Literally the same feeling after 8 videos again!

[@seeum]

same brooo, ngl i am still a bit confused but i understand it 10 times more than i did 2 min ago

[@uncannyvalley3190]

Happy for you because this video only made things more confusing

[@dasnilpferd115]

This is the best explanation of this that I have found. A lot of times when people make things really simple, they neglect actually explaining something and expect you to understand something just from seeing it. Thanks for making this helpful video!

[@davidsanchezsimon1386]

Best explanation ever, you didn't need to mention unnecessary terminology (which often makes you feel more confused) to perfectly explain the topic. Congrats! and thanks for the help!

[@python-for-everyone]

That is a really nice compliment! Thank you!

[@bastou_chl6066]

I started getting the concept before this video but to me this was very well and simply explained, congrats !

[@dimaconaffetto]

I watched a video 10-20 minutes long and did not understand anything. Here in 2 minutes I understood everything. Brilliant, thank you!

[@umaraliarshad7454]

After a year i have found the right answer.. bro I really love you... Keep it up.

[@eliaskarlsson9463]

I LOVE YOU MAN! I have been trying to understand this for so long now without any success. Finally I found you video and understood instantly. Thank you

[@brandon9638]

Even with this simple explanation, OOP is still confusing...

[@python-for-everyone]

OOP can be quite confusing. It took me over 20 years before I understood its true purpose. That said, 'self' is just a mechanism in Python. You can ignore it and focus on the main topics of OO, like polymorphism and inheritance.

[@osmarramoa434]

Master, legend... you brought light to my dumb brain. Thank you so much!

[@wesleypresleymusic4940]

Thank you. Best 2 minute explanation ever.

[@emirzarahman516]

Well this is explained in a very concise way, deserves a like and subscribe, thanks!

[@python-for-everyone]

Thank you so much for the kind words!

[@setripper]

Best explanation ever!

[@python-for-everyone]

Thank you!

[@kylerasinger5256]

Appreciate that you repeat yourself. Im sure it was the difference between understanding and not understanding for many.

[@python-for-everyone]

Thanks for that feedback. That is good to know!

[@swedenludvig]

Finally an explanation I understand. Thank you!

[@VAIBHAVMALHOTRA19]

Finally found the video where self is explained properly

[@ROHITKUMAR-mu7ik]

the perfect time you made a video for me thanks a lot.

[@haile3619]

Shortest and best explanation ever!!! Thank you bro!

[@python-for-everyone]

You are welcome!

[@GiangNguyenTruong-oh7qp]

Thank you so much it helps me a lot. It so clearly. I try to find many places to get it. but only you vid helps me

[@python-for-everyone]

Happy to help

[@Sufailps]

The best explanation ever

[@danielj.7656]

Explanation helps a lot, and was easier to understand for me than other videos. Thank you

[@python-for-everyone]

Thank you. That is a great compliment!

[@pratikrajpandey]

excellent video.. love it ... please keep making these videos...

[@pacificlite]

Man, This is so clearly explained. Unreal!

[@python-for-everyone]

Thanks for the compliment!

[@mauricioacuna3746]

Just subscribed to this channel so far the explanations are awesome please keep up the good work regards from Chile !

[@danielduran5969]

you are really great, thanks for the explanation :)

[@saniasiddiquieast]

Thumbnail was the reason I clicked this video because I had the same feeling for self as the person in thumbnail had😂

[@python-for-everyone]

I think we've all been there :-). Was the video helpful?

[@cesco24tv17]

well done! Looked for an answer all over google but this straight forward tutorial is the best explanations I found! 😄

[@bryanurizar]

Holy fuck! Finally a video that explains self properly and in a couple of minutes! Love how you walked through the execution! Thank you!

[@python-for-everyone]

You are welcome. Glad it helped you.

[@greenapetranslord4870]

Thank you for keeping it simple and short.

[@kobruh9642]

finally someone is explaining it finally!

[@pallavkan]

finally I understood after lot of videos!!! that really make sense now!

[@python-for-everyone]

Thanks for the compliment!

[@amalkrishnas1696]

very simple and easy to understand, thanks for the video

[@HimanshuSingh-xk9od]

Clear and Crisp explanation, probably the best one..!! If I can please request the content creator to do a video on Kivy ( self, root , app)

[@python-for-everyone]

Thanks, I would like to do a video on GUI frameworks but it has to wait as I am working on a Neural-Network-from-scratch course. And it is more work than I expected.

[@andrewvalenski921]

This is a beautifully simple and intuitive explanation - great video! Subbed!

[@python-for-everyone]

Thanks for the kind words!

[@juancruz151]

what a legend, best explanation ever! Thanks

[@python-for-everyone]

Wow, thanks!

[@JeganSriragavan28]

Great video..please continue to do more object oriented programming in python...

[@python-for-everyone]

Thanks. Each month, I give away 10 of my OO for Python courses on Udemy. Here is a free link you (or anyone else who reads this) can use. www.udemy.com/course/learn-object-oriented-programming-with-python/?couponCode=KZbin

[@Debelinka]

Thanks and once again big thanks! Like

[@training7574]

Very helpful, thanks.

[@python-for-everyone]

Glad it was helpful!

[@msteele919]

May you be blessed by all of the different gods 😇 Life saver!

[@python-for-everyone]

Thank you very much for that nice wish!

[@MrDaoJones]

I finally understand.

[@clemeverett4173]

that was fantascticly useful. Thanks mate

[@mohamedashrafnk]

Very nice explanation, thank you ..

[@python-for-everyone]

Thanks for the compliment!

[@himanshu4807]

nice bro....perfect...just perfect...this channel will go far

[@python-for-everyone]

That is so kind of you to say. Thanks!

[@memereview8149]

great video! thx

[@tj1486]

You're the best.

[@shawnkhoo1949]

Super clear explanation and simple yet straightforward illustrations. You deserve a like!

[@python-for-everyone]

Thank you very much!

[@souravendra]

glorious explanation. thank you so much!

[@mcaddit6802]

Thanks man!!!

[@user-xz7mu1jw3p]

really appreciate this explanation😀

[@J-K-AG]

Great video now i understand what self is after yrs of search. However, when do you not use self? I am not an expert in python so please forgive my ignorance

[@python-for-everyone]

To see when to use self and when not, watch this video next: kzbin.info/www/bejne/p4mYhaN4r9V8rdE

[@haameemshimar8828]

Thank you so much that was really a great explanation ever

[@MiBaLinuxTech]

Thanks a lot for this explanation

[@martinlancaster5109]

eureka! thank you!

[@Bubblecoffee]

Thanks for this

[@python-for-everyone]

Any time

[@esoopthederp7672]

Took me two watches but it’s clicked, thanks!

[@python-for-everyone]

Good to hear!

[@Rikki-xj7gv]

thank you so much for work

[@python-for-everyone]

You're welcome!

[@samvid1992]

thank you very much. awesome explanation.

[@matheussoares4281]

JESUS, ISSO ESTÁ TÃO BEM EXPLICADO QUE MESMO EU NÃO FALANDO INGLÊS EU ENTENDI 100%. DEUS TE ABENÇOE!!!!!!

[@python-for-everyone]

Muito obrigado!

[@MemasMaklas]

Really good explanation!!!

[@rudravaramsharan5351]

Thanks bro

[@Rudra-go6us]

very clear. Thank You

[@tutoro5567]

ooooooo that what it is, thank you

[@sashwattanay]

Thank you so much.

[@adrianayon5513]

I understand what its doing but why does it work?? Also, I feel like self = e but nobody says it.

[@MCSGproject]

Why isn't self implied then? what would happen if you didn't have self?

[@elektro8174]

thx

[@thereisnoname2052]

I think if you translate this video into many languages, it will be useful to many people

[@bubblebath2892]

How do i print the name of the object when it is created - i.e how to print(e)...coz print(self) gives a location not 'e'

[@python-for-everyone]

The object has no name. But if you mean a name attribute, then add this method to the class: def __str__(self): return self.name

[@abhishektyagi4428]

thanks a lot dope explanation

[@python-for-everyone]

Thank you!

[@zoshida]

nice

[@Misc_useful]

Very nice explanation. I subscribed to your KZbin channel

[@python-for-everyone]

Thanks!

[@bg6159]

Thanks for explanation But in Python Class fields and properties definition it's not clear like in C# and Java. self.salary is look like local variable, but in Python is used like public global variable.

[@python-for-everyone]

I agree that C# makes it more clear. However, self.salary is an attribute, not a global variable.

[@bunny.bunbob]

decent, but gets quite lost after 1:20

[@olagarto1917]

why calling the instance wont make it explicit that you are calling int?

[@python-for-everyone]

That is the way Python implemented the mechanism.

[@luudest]

Stupid question: Is „self“ always used when working with classes or are there examples where „self“ is better not be used (and why)?

[@python-for-everyone]

Yes there are examples of class methods that do not use self. Class methods get cls (the class object) as first parameter and static methods get no additional first parameter at all.

[@luudest]

@@python-for-everyone thx. Just read about self and cls. Followup question: Is it right that neither of them are keywords in python? „They are just ideal naming conventions whose name can be changed and yet the functionality would be the same“

[@python-for-everyone]

@@luudest Your assumption is true. cls and self are conventions. I show this in a follow up video: kzbin.info/www/bejne/p4mYhaN4r9V8rdE

[@user-cl7sk9mc3w]

def set_salary isn;t attribute but method ?? and self.salary is attribute ? confusing ...

[@python-for-everyone]

It is a bit different. def set_salary is a function in the class that becomes a bound method when it is retrieved via attribute set_salary. If you want to dive in a bit deeper, watch this next: kzbin.info/www/bejne/rmXNZ5Wwl8eraNE

[@rockstarprashantpanth1545]

What is caller at 1:55

[@python-for-everyone]

The thing/user/code that calls the function.

[@raghuraman8829]

That was great ! i feel really bad when i noticed likes ...

[@python-for-everyone]

Thank you for the compliment!

[@manickam7231]

Then y we will be nt using this in jaba

[@python-for-everyone]

No, Jaba does it implicitly

[@116sharan.d.k6]

Why self. Salary =num

[@frozeneye100]

Mine goes salary.num() TypeError: please consult with HR about your instance…

[@Lynn-ds2qj]

I still don't get it...at all

[@Pandabubble]

You sir, are A MAY ZING.

[@Arcann_bhp]

If someone would sit there and draw arrows around while explaining a code, I’d be a programmer in 2 min WTF

[@proproductreview6892]

wish you had subtitle

[@rohanofelvenpower5566]

YES, I watched like 5 other videos on this and long ones but it just didn't click the e refers to the self!!!

[@walterstraub150]

I still don't get it :^) but thanks

[@python-for-everyone]

It took me a while to get it either. Here is an updated video that might help you further: kzbin.info/www/bejne/rmXNZ5Wwl8eraNE

[@serious6037]

you are god.

[@DigitalHandle]

My guy dumbed down the explanation yet i still don't understand, you gotta super duper dumb down this stuff before i start understanding it

[@surprisedpikachu4716]

Bruhh it was that simple, BRUHHHHHHHHHHHHHHHHHH!

[@python-for-everyone]

Once you see it, you go Bruhh :-)

[@gokulvenkatesan5798]

Sappu

[@AceThePeasant]

E

[@python-for-everyone]

Take a deep dive into self in Python by learning bound methods: kzbin.info/www/bejne/rmXNZ5Wwl8eraNE

[@heuristicalgorithm8465]

makes no sense

[@neuzen]

Poor language design? Other languages don't need such nonsense.

[@Lexyvil]

I agree. In C#, "self" is not required, and functions do the same thing.

[@vitalii200]

Hate python. Have 7 years of exp in Java

[@python-for-everyone]

Coming from C# myself, I can imagine Python being strange at first. But if I can help you, just let me know.

[@JasimGamer]

we don't need to type "self" we can name it anything but the common is "self" we could do this def __init__(this,arg): this.a = arg

[@joeking5211]

so are you saying that you could change it for anything like def __init__(whywouldanyonecreatingalangugemakeitsocrypticandconfusing,arg): whywouldanyonecreatingalangugemakeitsocrypticandconfusing.a = arg ??????

[@dadecky5276]

thanks man, really helpful

[@python-for-everyone]

Glad it helped!