PLEASE Use These 5 Python Decorators

Рет қаралды 84,217

Күн бұрын

In this tutorial, I'll be unveiling 5 essential Python decorators that every programmer should have in their toolkit. If you're wondering what decorators are and how they can supercharge your Python code, you're in the right place. Throughout this video, I'll dive deep into the world of decorators, explaining their fundamental principles and showcasing real-world examples of how they can streamline your code and make it more efficient.
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🎞 Video Resources 🎞
Python Decorators Tutorial: • Expert Python Tutorial...
Python Dataclasses Tutorial: • Python Data Classes Ar...
⏳ Timestamps ⏳
00:00 | What Is A Decorator?
05:30 | What You NEED To Know
06:14 | @property
10:34 | @staticmethod
12:10 | @classmethod
13:45 | @functools.cache
17:09 | @dataclass
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Пікірлер: 62

@TechWithTim Ай бұрын

If you’re serious about becoming a developer in 2024 check this out: techwithtim.net/dev

@pietrovalentinoyannellihan3883 Ай бұрын

Hello, sorry to put this comment here but i need help with my flask app, im trying to put my app in an Ubuntu server but im using plesk, i already followed your instructions in your video about It but It doesnt work, this is my first website so im clueless and i would really appreciate some help

@kameroongod Ай бұрын

The more I learn the more I realize I know nothing lol. Keep up the content. Few channels that gets me listening to tutorial videos in my spare time just for fun lol.

@franco-gil Ай бұрын

The more you learn, the more you can assist others, keep learning new things. A secret, replicate all the content you are trying to learn, you will understand in a more easy way.

@Dot_Starshot Ай бұрын

So excited to watch this!!

@alimihakeem841 Ай бұрын

I love your content Tim. Keep it up. I have really learnt alot from you. I see as you as my role model

@neurooted Ай бұрын

Keep it up Tim! Very very high quality video.

@samukaze5810 Ай бұрын

Tech With Tim I love your informative videos!

@Al_Miqdad_ Ай бұрын

cool information thank you ❤❤

@Musaafir-ln6feet Ай бұрын

Nice can you also cover descriptors and Enums in detail they improve on dataclass.

@Abdullo_1124 Ай бұрын

Thank you bro

@BobbyConquest Ай бұрын

15:41 how do you type/ make those lines in the comment? Super clean. Love all your videos Tim, you have a gift for teaching

@DrDeuteron 18 күн бұрын

I like functool's total_ordering decorator.

@abdallahbabeker3324 Ай бұрын

Thanks for the video ❤ what's the name of your theme in vs code

@TechWithTim Ай бұрын

Monokai

@mattmarshall1834 26 күн бұрын

The functools cache speeding up the Fibonacci func is crazy. I know how it works but it's still crazy to see.

@sanukyadav 28 күн бұрын

7.18 using '_' single underscore represents protected item not private, "__" this is private.

@sinaorojlo5980 15 күн бұрын

Awsome 🎉🎉❤

@grmrcy Ай бұрын

Loved the video, but with all due respect: there is an error in the Fibonacci code. For initial conditions it should be if n < 2, return 1 (not n, as it will return 0 for n=0, but fibonacci(0) should be 1)

@sri_harsha_dv Ай бұрын

It all depends on how you want to start the fibonacci series. Series can either start with (0,1) or (1,1) or (1,2), all of them lead to same sequence starting at different positions. And the time complexity barely changes.

@davidmurphy563 Ай бұрын

Ok, we've got python decorators - but when are we getting python painters?

@Abdullo_1124 Ай бұрын

plz make a pygame full course video

@willk4481 10 күн бұрын

Why do we use decorator? @4:31 mark? We could simply write another function and call the example function from within it. Add start_time and end_time above and below the function call to example function. Thatbwould be sufficient, isnit not so?

@rupen42 6 күн бұрын

Yes, that is sufficient _in this case_. But what if you want to time 5 functions? 20 functions? 100 functions? You can write 1 decorator and apply it to them all or write n individual functions for all of them.

@hieu8276 Ай бұрын

Nice video. It enhances my belief that freshers should start with C++ or Java. Understanding the decorator, design patterns, static vs class methods, access control, and other OOP concepts makes people write better Python code. Starting with Python should only work for non-IT who need to function quickly.

@blazkowicz666 20 күн бұрын

You are right. I feel in school or college, people should really try to learn: C to learn how a computer actually works Java to really understand OOP, Generics, Reflection etc. And C++ to implement concepts learnt from C and Java to create performant software

@garfield-pro Ай бұрын

9:31 What would happen if we try to assign some value to c.diameter?

20 күн бұрын

Error - no setter defined.

@DrDeuteron 18 күн бұрын

and if you do have the bad habit of assigning attributes outside of dunder init, you can use the setter to flag when it happens, so you can find the inevitable bug caused by that bad habit.

@anubhav12qw Ай бұрын

Nice video bro 😊

@TechWithTim Ай бұрын

Thanks 😁

@Balkac Ай бұрын

This cache decorator!

@cfwebdeveloper Ай бұрын

May we use setter/getter in django? Probably yes? If using models can this be used? Maybe as custom validators probably? My brain just wrote this out lol but seems feasible?

@DrDeuteron 18 күн бұрын

what do you mean getters/setter? property and property().setter, yes, but if you're writing methods called set_radius(self, radius) or get_radius(self), then no. Never. It's not java.

@cfwebdeveloper 18 күн бұрын

@@DrDeuteron Totally agree. I also don't touch Java, ever lol

@DrDeuteron 18 күн бұрын

omg, I was on a NASA code project and it was full of: space_craft . get_intrument() . get_sensor . get_channel() . get_shelves() . get_shelf() . get_temperature() (and setters like that!) calls, and the 1st thing I did was turn it all in to @property and dunder getattr / init magic, (they were doing bare init class with post attribute setters), oh, and they had one class per module...so they came in Monday freaking out "85% of the code base is gone!" I raised my hand and said "you're welcome". It was pretty rocky after that ;-)

@cfwebdeveloper 18 күн бұрын

@@DrDeuteron jesus lol

@franco-gil Ай бұрын

[9:02] zero is not a positive number, it is a neutral number, you should improve the ‘if’ statement, nice video 👋

@balloney2175 Ай бұрын

Tim is da python expert. I'm afraid of pythons.

@Dd-do-and-dont Ай бұрын

0:17 function, method or class

@philtoa334 Ай бұрын

@iuritorres 23 күн бұрын

someone can give me more examples of when dataclass will be more useful than normal classes?

@DrDeuteron 18 күн бұрын

for me, when I'm reading 545 data fields of space craft telemetry, which is a helluva dunder init. Instead I just cut and paste the attributes from an excel file into a data class and it calls for a single mouse click. Moreover, dataclass comes with "fields", which can be used to describe the fields, the LaTex formulas for them. expected ranges, alarm ranges, broke ranges, and there is an astuple functions, which can be stuck in dunder iter, possible zip with the fields, and in about 3 lines of executable code, you can flag out-of-range telemetry. Very little dynamic code, and lots of static could is much simpler and less bug prone.

@miyu545 14 күн бұрын

I think the rocket scientist that thought about how or why to create decorators were drunked sailores full time, programmers part time.

@monishbiswas1966 Ай бұрын

Of course you’d never write a recursive Fibonacci function like that - you’d get it to return the last two numbers so you only need one recursive call.

@DrDeuteron 18 күн бұрын

too clever.

@salarbahador1270 Ай бұрын

Which programming language doesn't support access modifiers these days? Do you think a convention stops people from wrongly using the methods or properties? Besides Python also doesn't support Interfaces. I'm not sure what's all the fuss about. Even modern PHP is more standard than Python; which people advertise PHP is dead.

@rupen42 6 күн бұрын

Python is a language for consenting adults. Not sure what you mean by not supporting interfaces, since untyped Python obviously doesn't have them, and type-annotated Python definitely has them (protocols). There are also abcs (abstract base classes) that serve a similar function _and_ are checked at runtime.

@johngeverett 10 күн бұрын

So you implement privatization schema to 'fix' the deficiency of Python in having all public attributes and methods. Also adding 'hints' to variable definitions to make up for the type-agnostic nature of the language. Next "awesome best language ever" coming soon to a computer near you!

@Nova32x 4 күн бұрын

Not really sure what you're point is. The main use case of the property abstraction of a private variable is for libraries. No reason for actual strict access control. Also type hints are mostly for runtime type checking and editors.