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Python Data Classes Are AMAZING! Here's Why 

Tech With Tim
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In this video, you'll discover why data classes are a game-changer for Python developers for simplifying code and enhancing readability.
If you want to land a developer job: techwithtim.net/dev
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🎞 Video Resources 🎞
Docs: docs.python.org/3/library/dat...
⏳ Timestamps ⏳
00:00 | Before Data Classes
01:14 | An Intro To Data Classes
01:47 | How A Data Class Works
04:57 | If You Want To Become A Developer
05:49 | Data Class Example
06:58 | Optional Arguments
07:53 | Default Parameters
10:28 | A Quick Tip - Help()
10:55 | Class Variables
11:39 | Inheritance
14:03 | InitVar
Hashtags
#python
#dataclasses
#programming

Опубликовано:

 

14 июн 2024

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Комментарии : 70   
@TechWithTim
@TechWithTim 3 месяца назад
If you’re serious about becoming a developer check out my program with course career: techwithtim.net/dev
@MrRocka12
@MrRocka12 3 месяца назад
hey tim is this in the course?
@TechWithTim
@TechWithTim 3 месяца назад
@@MrRocka12 yes!
@sobi-94
@sobi-94 3 месяца назад
I've only just started watching this video but I just want to say you're really talented and informative. I think you're excellent at conveying what's going on in a simplified way. I think this is the earliest I've ever been for one of your videos haha. Please keep doing what you're doing for the computer science and data science space! Sending you blessings from the UK☺
@marktaylor9886
@marktaylor9886 3 месяца назад
I've been watching old videos, so good to finally see you on VS Code! haha
@DrDeuteron
@DrDeuteron 2 месяца назад
I was given a csv file with 524 columns of date times, instrument telemetry, etc...dataclass saved the day...just cut and paste the column header names and let the decorator do the rest. Also put the in-spec limits in the field's metadata along with LaTex strings for y-axis labels. 524...times. data class ftw.
@rockstarj3
@rockstarj3 3 месяца назад
Perfect timing for this video. I was able to use it right away in my project.
@repairstudio4940
@repairstudio4940 3 месяца назад
Oh this is wonderful, thanks Tim! 🎉
@Dot_Starshot
@Dot_Starshot 3 месяца назад
Man this will be a good and convenient way of reduced my classes code in my current project. Thanks for such good content, and also at the perfect time 😜
@rafacoluccijf
@rafacoluccijf 3 месяца назад
I am still not conviced. Sure, for small classes with a few fields and logic it might be worth it. But in real world prod code you will have inheritance, polymorphism, logic, dependecies, etc. and you will end up having to implement all those "hacks" you mentioned. Simple classes will be much easier to understand and read and will have probably less overhead. Dont get me wrong, it is a nice tool to have in mind but call it AMAZING is a little too much IMHO. It would be much better if Dataclass just worked without having to implement all those hacks like post_init. I think it is designed to be use as placeholders for data you get from a database for example.
@tech_with_the_unknownguy
@tech_with_the_unknownguy 3 месяца назад
cool video Tim!
@MilahnMartin
@MilahnMartin 3 месяца назад
Awesome video ! What switches do you have on your keyboard ? Does anyone know ?
@hennadiiborysov7816
@hennadiiborysov7816 2 месяца назад
Good topic, please continue
@midhunr3176
@midhunr3176 3 месяца назад
Thank you keep going
@fr9714
@fr9714 2 месяца назад
Great tutorial
@user-ov1ps7go4m
@user-ov1ps7go4m 3 месяца назад
Would you recommend Python/Pygame for aspiring Android Game Developers?
@y2ksw1
@y2ksw1 Месяц назад
This decorator should be called @classes and inbuilt, without the need of a decorator 😊. Contrarily, with a @boilerplate decorator, that functionality could be then disabled, but I would like to see, how often that is going to be used 😅 It is the missing link for building a fully functional class without being bothered with boilerplate code. Which I believe would be best to not require anyway.
@GasterLab
@GasterLab 2 дня назад
It's not gonna built-in because code generated by this is not cached
@ezrasamson-ez2mv
@ezrasamson-ez2mv 3 месяца назад
Hi tim do you know any thing about odoo developers
@rohitkumar34864
@rohitkumar34864 3 месяца назад
Which theme are you using?
@Muhaiminul_coding_club
@Muhaiminul_coding_club 3 месяца назад
this is super cool 😎 😎
@JorgeEscobarMX
@JorgeEscobarMX 16 дней назад
Is this video part of a playlist?
@Master_of_Chess_Shorts
@Master_of_Chess_Shorts 3 месяца назад
I understand the decorator and how useful it is when you are defining a class. You explain really well and your video is edited well. I am not going to use it though. I like to understand code completely and I feel that this approach "hides" potential clarity for the benefit of saving just a few lines of code that originally made the class more readable. It can get complicated if you keep adding parameters like order. Resistance to change, I guess.
@GiiT2024
@GiiT2024 3 месяца назад
Hello there Tim, am launching 200 days of python code challenge and am glad that you are that person who made me love python, but now tell me if there's away I should approach this 200 days of coding
@jaserogers997
@jaserogers997 2 месяца назад
Just do it ffs
@helomydestiny8431
@helomydestiny8431 3 месяца назад
hey , this is quite outside the topic , but anyone know how to fix could not find and load class main ( in java in vscode ) . By the way when i output the small code such as "hi" , "hello world " , it works but when i print a large lines of code , the terminal doesn't give me the output and the output keeps saying could not find and load class main ?
@edwardmacnab354
@edwardmacnab354 3 месяца назад
go to stack overflow to get beat up and demeaned with a RTFM reply
@CattleRustlerOCN
@CattleRustlerOCN 3 месяца назад
Try a different name other than main and see if it works
@lukemarshall1892
@lukemarshall1892 3 месяца назад
Get out of here you're scaring the children
@ssublexff3465
@ssublexff3465 2 месяца назад
Try reinstalling java dependencies as well as check it in some other IDE just so you know there is not some IDE kind of error.
@agnichatian
@agnichatian Месяц назад
just hit alt-F4
@englishsimple1052
@englishsimple1052 3 месяца назад
Hello Tim! How are you? I am going to be web developer in future. I downloaded VSCode. But I do not know how to start it. I need to start index.html and style.css I would be grateful If you could help me in this case.
@christislight
@christislight Месяц назад
Python flask will help! Render index.html static js and static css
@richardmonteiro8694
@richardmonteiro8694 Месяц назад
12.30 time line the super().__init__(self.side, self.side) should be super().__init__(self.height, self.width) right?
@marcosoliveira7538
@marcosoliveira7538 День назад
I had the same thought. I noticed the mistake as well.
@sinaorojlo5980
@sinaorojlo5980 Месяц назад
I use Vscode what is the theme name?
@DrDeuteron
@DrDeuteron 2 месяца назад
on post init: beware doing work in the constructor....
@CodeWithArpitTech
@CodeWithArpitTech 3 месяца назад
good
@bibekbhusansahoo9412
@bibekbhusansahoo9412 2 месяца назад
It's same as record class in java
@johnschmitt9158
@johnschmitt9158 2 месяца назад
Well done. I wish instructors would at least mention that types are not necessary to write dataclasses. No field needs a type associated with it. Types are nothing but comments in Python, unless tools beyond bare python are invoked.
@carl2488
@carl2488 2 месяца назад
So you can just create fields like: class Point() x y Can you?
@Muhaiminul_coding_club
@Muhaiminul_coding_club 3 месяца назад
i like this
@RishantKarn-ws3ce
@RishantKarn-ws3ce 3 месяца назад
Can you tell something about devin please? is coders's job dead?
@Chill018
@Chill018 24 дня назад
great video as always but.. am I the only one who heard him say "Codder" for color? :'D
@rohanparasa8606
@rohanparasa8606 3 месяца назад
I think this is inspired from kotlin data classes
@bechirzouaoui5821
@bechirzouaoui5821 3 месяца назад
I love the ide you are using can you share it with us ?
@TechWithTim
@TechWithTim 3 месяца назад
It’s VSCode
@ogif2
@ogif2 3 месяца назад
Sublime?🤔
@edwardmacnab354
@edwardmacnab354 3 месяца назад
invents python because perl was too weird . Python becomes weirder .
@repairstudio4940
@repairstudio4940 3 месяца назад
I ❤ it's weirdness. 😊
@GiannakYT
@GiannakYT 3 месяца назад
"Object-oriented programming an exceptionally bad idea which could only have originated in California"-Dijkstra
@goodlookinouthomie1757
@goodlookinouthomie1757 2 месяца назад
What's the better option and why? In terms that a beginner like me would understand.
@GiannakYT
@GiannakYT 2 месяца назад
@@goodlookinouthomie1757 are you asking why it is used?
@goodlookinouthomie1757
@goodlookinouthomie1757 2 месяца назад
@@GiannakYT Well just generally what is the alternative to OOP. And yes i suppose why you would use that.
@GiannakYT
@GiannakYT 2 месяца назад
@@goodlookinouthomie1757 Functional programming is an alternative.
@sebastianquiroz7271
@sebastianquiroz7271 14 дней назад
​@@goodlookinouthomie1757 in reality it depends on the scope of your programming. Need a quick and simple script that youre not gonna change just write global variables and operations. What you will find quickly enough is that some steps are repeated and you can write those steps as a function. Then you would use a mix of global and functional programming. If you continue scaling your project is that some variables are used in a section and not used any more, so it makes sense to separate those steps in to bigger functions, to save memory, also you would gain more flexibility as you would know which variables are used in each function and changing it once changes it for the whole script. If you continue scaling your project you may find some functions are called many times and each of those times something little changes, so you create a class that calls those functions and may change it. Another option is you want your script to have individual features and features that are a mix of the others, so a class could group those features (functions) as one and you can call them individually or in a group as your new function. So mainly you sacrifice more work to implement functions and or classes but gain flexibility or save lines of code for repetitions. Note this are examples and theres more pros and cons for using each paradigm.
@murphygreen8484
@murphygreen8484 3 месяца назад
I only ever use dataclasses when making classes
@sweetphilly2
@sweetphilly2 12 дней назад
Lombok for Python it seems
@z.8477
@z.8477 2 месяца назад
please DO NOT USE THESE ANKWARD FACE CHANGES FOR THUMBNAIL LIKE OTHERS! its maybe working but it is stupid...
@TimoYlhainen
@TimoYlhainen 2 месяца назад
As a programing language, Python is a total failure. And it's success and popularity is a tragedy.
@kazihiseguy-fernand4637
@kazihiseguy-fernand4637 2 месяца назад
Huh ?
@alexanderelgert6037
@alexanderelgert6037 3 месяца назад
def __str__(self): return self.__repr__() def __repr__(self): return class__repr(self) ... def class__repr(classo): d_ = classo.__dict__ # class dictionary i = ' ' if d_ else ' ' # indent return f'{classo.__class__.__name__}() >'
@simonmasters3295
@simonmasters3295 Месяц назад
I liked your code comment, but I don't understand it...
@alexanderelgert6037
@alexanderelgert6037 Месяц назад
@@simonmasters3295 If you put the first two functions into a class, these ones are called if you want a string representation for the class instance object. The class__repr function is used to list all parameters assigned to this instance. This is very handy, if you want to know what data an instance owns.
@alexanderelgert6037
@alexanderelgert6037 Месяц назад
@@simonmasters3295 If you look at the code at 0:24, there is a static __repr__ method. If you add another instance property you would have to extend the method. The approach I am using is generic, you can use it on every class and it happily list all the properties recursively.
@alexanderelgert6037
@alexanderelgert6037 Месяц назад
@@simonmasters3295 trying to answer the third time ...
@alexanderelgert6037
@alexanderelgert6037 Месяц назад
@@simonmasters3295 Please look at pos 0:24 in the video, the __repr__ function is static, if you extend the class, you have to extend the f-string. My solution is generic, it works for all classes. You can put the class__repr function in your own library, it lists all properties for an object using the classes __dict__ dictionary.
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