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Decorators in Python || Python Tutorial || Learn Python Programming 

Socratica
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𝙎𝙞𝙜𝙣 𝙪𝙥 𝙛𝙤𝙧 𝙎𝙤𝙘𝙧𝙖𝙩𝙞𝙘𝙖 𝘾𝙤𝙪𝙧𝙨𝙚𝙨: www.socratica.com/collections
𝙎𝙤𝙘𝙧𝙖𝙩𝙞𝙘𝙖 𝙋𝙮𝙩𝙝𝙤𝙣 𝙨𝙝𝙞𝙧𝙩: shop.socratica.com/products/p...
Python decorators are "syntactic sugar" that makes it easy to add new features to a function or class without changing its code. To understand decorators, and to write your own, you'll learn how in Python, functions are "first class citizens" and how functions can be nested inside each other. These two features are the essential features that make decorators easy to write and super easy to use.
𝙋𝙧𝙤𝙜𝙧𝙖𝙢𝙢𝙞𝙣𝙜 𝙥𝙡𝙖𝙮𝙡𝙞𝙨𝙩𝙨:
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Python instructor: Ulka Simone Mohanty (@ulkam on Twitter)
Written & Produced by Michael Harrison
Edited by Megi Shuke and Michael Harrison
#pythontutorial #decorators #coding

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6 май 2023

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Комментарии : 165   
@Socratica
@Socratica Год назад
Socratica Friends, we have a quiet little email group for Python if you'd like to receive updates. Sign up here: bit.ly/PythonGroup
@wjrasmussen666
@wjrasmussen666 Год назад
I am glad that she is doing more videos.
@TheCritic108
@TheCritic108 Год назад
Nunu chus le aa
@AlokTP
@AlokTP 11 месяцев назад
You are really good at teaching. Your videos are fun. The tongue in cheek humour("birds" & in background) is hysterical. The production quality is phenomenal. Impressive. Keep up the good work.
@ellupoit
@ellupoit 26 дней назад
broken link
@anthonymunnelly20
@anthonymunnelly20 Год назад
I’ve been working with Python for over ten years and I have never seen decorators explained so well or so succinctly as here. Really outstanding work. Outstanding.
@WaldoTheWombat
@WaldoTheWombat 25 дней назад
I agree, though she lost me at 8:02
@olivierbegassat851
@olivierbegassat851 Год назад
This series just keeps on giving, always fun, to the point and beginner friendly. I love your work 🙂
@kayakMike1000
@kayakMike1000 Год назад
Decorators are pretty cool. I love to use em. You can even use decorators to sorta register a function with a class that defines a callable, it contains the __call__ magic method. This is how that Flask package works.
@fvazquez64
@fvazquez64 7 месяцев назад
Love that Talking Heads "Once in a life time" reference... Thanks Socratica, you're something else...
@JozuaSijsling
@JozuaSijsling Год назад
I'm a seasoned programmer but never touch Python. I love this video. The underlying pattern of decorators is universal and this video does a great job explaining it.
@ragtop63
@ragtop63 Год назад
I've only ever had to use a Python decorator to explicitly tag a class method as a property getter or setter. So the "less common" implementation noted in this video is my most common implementation.
@quintencabo
@quintencabo 7 месяцев назад
I think she meant actually creating new method decorators
@practicalbong1497
@practicalbong1497 Год назад
This is amazing following your content for the last 3 years Now I'm a middle level backend developer
@kingofcastlechaos
@kingofcastlechaos Год назад
I am new to Python and enjoyed the video, but I'm not quite ready for this. Looking forward to watching it again when I have a better grasp of the basics. Excited to see there are new videos being created. Thank you for your hard work Socratica team!!
@hectorherrera4193
@hectorherrera4193 Год назад
Finally I understand decorators. Thanks for sharing!!
@nomeshwersharma2570
@nomeshwersharma2570 Год назад
Thanks for your amazing python tutorial. I am not a python developer but still watch your videos for the way you deliver these.
@goranjosic
@goranjosic Год назад
Python programming is FUN!! When I code something in javascript, I remember how much I LOVE Python - the readability of the code is INCOMPARABLY better. I sometimes struggle to read my javascript code from a few months ago, while with python I don't have that problem, no matter how big is the project. It's just a shame that Python is so slow, often for everything but hobby projects where speed is not important. Regardless, I will always love Python and he will always be a part of my hobby projects! ❤😄
@borispsalman
@borispsalman Год назад
Some people suggest using Cython if speed is the concern, also i think Numpy is written in C such as other libraries that require fast computation. Python is generally used as a glue language where you maximize the advantages of python and only call functions written in faster languages.
@cyndicorinne
@cyndicorinne Год назад
This is awesome. 💜 Concise on the why and the how of decorators!
@yash1152
@yash1152 Год назад
0:00 Motivation 0:19 Introduction 0:42 Syntax & Types 1:06 Impellation ---------- 1:50 Functions: First Class Citizen 2:34 Functions: Nested Definitions 3:04 Segue 3:29 Timer: Manual with timeit.timeit or time.perf_counter 4:00 Timer: Wrapper Function (with *s and **s) 5:35 Timer: Decorator Syntactic Sugar ---------- 6:04 Review (with *s and **s) 6:50 functools Module 7:02 cache Decorator 7:52 wrapper Decorator 8:12 Parametric Decorator 8:35 Memoization on Fibonacci ---------- 10:11 Review & Conclusion 10:40 Outro
@JordanWyk
@JordanWyk 5 месяцев назад
Thanks bro
@omarcruz6326
@omarcruz6326 4 месяца назад
These Socratica Python videos are great ! 👍 Keep the excellent work 💪
@Socratica
@Socratica 4 месяца назад
You are so kind, thank you for your encouraging words!! 💜🦉
@amoorinet..
@amoorinet.. 3 месяца назад
I am totally certain that, none of us will not find a channel on RU-vid that let them get the python programming concepts in complete way except this channel, my advice for beginner writes down each code each word had been said in this channel. Really, I have been fall in love this channel..❤❤❤❤❤❤❤❤❤❤❤❤❤❤❤❤❤❤❤❤❤❤
@Socratica
@Socratica 3 месяца назад
You are too kind, Socratica Friend!! We're so happy you've found us. 💜🦉
@cavelinguam6444
@cavelinguam6444 10 месяцев назад
I really love this channel. Has been a good companion for years.
@Socratica
@Socratica 10 месяцев назад
We're so glad you're with us, Socratica Friend!! 💜🦉
@GarimellaProduction
@GarimellaProduction Год назад
This is amazing content ! Really simplifies decorators .
@user-vb7im1jb1b
@user-vb7im1jb1b Год назад
It is great she is back! I'm looking forward to more up to date videos.
@williamjordan9237
@williamjordan9237 Год назад
Thank you for the video and channel. Your hard work is appreciated. Im learning for the first time!
@Gouphster
@Gouphster Год назад
I would give more thumbs up to this video if I could. I'm so glad to see another video in this series.
@cyndicorinne
@cyndicorinne Год назад
6:00 love it 💜 Best line yet: “That syntactic sugar is definitely sweet.”
@ow7398
@ow7398 4 месяца назад
I've just found your channel and love it. It's been so helpful to learn python as a beginner, and your examples are very clear and your dry humour is very enjoyable. Can you please explain what *arg and **kwarg means (or point me to a video of yours that explains it)? I've clearly missed this step in my learning process. EDIT: you explained it later in the video. serves me right for commenting midway through. Thanks!!
@lazadaunboxing2225
@lazadaunboxing2225 Год назад
I am very happy I found this channel! Thank you very much!
@Cynthia_Cantrell
@Cynthia_Cantrell Год назад
+12 happiness points for the Talking Heads reference.
@Wokoman1
@Wokoman1 Год назад
Once in a lifetime content 😊
@serta5727
@serta5727 Год назад
I love your informative tutorials. They are awesome ❤
@other8094
@other8094 Год назад
I already new all this but watched it because I love this series, great ending too.
@Phateau
@Phateau Год назад
Thanks for making cool python material again!
@dalpyma8791
@dalpyma8791 Год назад
Thanks for this video. I am currently learning python (v3) and this taught me a lot.
@raviv5109
@raviv5109 Год назад
Missed you! As usual simply amazing !
@vikranttyagiRN
@vikranttyagiRN Год назад
These videos are a work of art.
@serta5727
@serta5727 Год назад
It’s super high quality and I would recommend this to anyone
@nimaamintaghavi512
@nimaamintaghavi512 Год назад
Excellent job with explaining the concept and giving examples. It may be beneficial to do a video about Python Multithreading and Multiprocessing.
@alexbalak7558
@alexbalak7558 Год назад
Always a pleasure to learn new things with you ! Je vous aime ❤
@hankblack783
@hankblack783 Год назад
Great video as always ... and it helps to be a Talking Heads fan to get the ending of the video.
@ryanchung4146
@ryanchung4146 8 месяцев назад
Thank you, well explained and informative!
@EvilGenius2909
@EvilGenius2909 Год назад
Love the style of your channel it's awesome!
@fullstackspiderman
@fullstackspiderman Год назад
yay welcome back after years..
@IgorKuts
@IgorKuts 9 месяцев назад
This is pure gold.
@roberthildebrand1780
@roberthildebrand1780 Год назад
Awesome! Can you give more examples of dynamic programming using the @cache decorator?
@Torresmos
@Torresmos Год назад
Always good the see another video from this series.
@BrianStDenis-pj1tq
@BrianStDenis-pj1tq Год назад
Love Socratica.
@skilz8098
@skilz8098 Год назад
Pure Native Python is considered slow compared to many other languages that are compiled as opposed to being interpreted. Yet the versatility of the Python language to produce working code faster is quite valuable. When working with some code bases that run quite slow on large data sets with repetitive calculations, or in code sections that are considered critical sections or potential bottlenecks, I know that there exists a library module that can be imported to invoke the code to be precompiled kind of like other languages JIT compilers. I just don't remember the name of the import module. Just as important; demonstrating how to use vector intrinsics within Python I think the two of these would make for an excellent resource videos as they could be proven to generate even faster running code within various situations compared to many already existing commonly used library modules. Again, it's great to see that you're back with another excellent Python video and this is coming from someone who works more with C/C++ and a little bit of Assembly.
@Trucmuch
@Trucmuch Год назад
This explanation is really once in a lifetime
@my_graphics
@my_graphics Год назад
Its amazing. Its revolutionary.
@robboerman9378
@robboerman9378 2 месяца назад
“We still had to write throw-away code. That increases my sadness level to 2.9”. Love the super dry computer humor 😂❤
@lxathu
@lxathu Год назад
Not the first video I've seen on this issue but the first one that clarifies the emerging questions right before they could be distractive.
@cricketknowledge2412
@cricketknowledge2412 Год назад
I'am from india ❤❤❤ it is very interesting and helpfull
@eschudy
@eschudy Год назад
Love the recursion. Talking head quoting the talking heads. Can you recurse again?
@rockNbrain
@rockNbrain Год назад
Great job as always
@edbaxls
@edbaxls Год назад
Another great video!!!
@bastabey2652
@bastabey2652 Год назад
a very unusual and engaging presentation...thank you
@ryuk_shinigami
@ryuk_shinigami 10 месяцев назад
After a long time again on this channel. You are uploading new videos ❤
@Zvend
@Zvend Год назад
god i love your humor! You re the reason why i always go back to python, cause its so much fun but then have to go back to my C++ again 😅
@darkesco
@darkesco Год назад
These videos are very entertaining!
@BitCloud047
@BitCloud047 Год назад
I love you and your videos!!
@jagadishgospat2548
@jagadishgospat2548 Год назад
Good one guys, keep em comin.
@TheVVSLink
@TheVVSLink 11 месяцев назад
I love your videos you are helping me through my classes!
@Socratica
@Socratica 11 месяцев назад
This is so great to hear!! 💜🦉
@thefireagen
@thefireagen Год назад
Look who back! Welcome
@jianzhen3
@jianzhen3 Год назад
the best explaination I have ever get
@LearningCalculus
@LearningCalculus Месяц назад
You are the best explainer.
@janaramon1232
@janaramon1232 Год назад
Please keep uploading more python videos, eg , file handling,web scrapping using beautiful soup etc.
@blucenere
@blucenere Год назад
I love this series and she is great!
@blucenere
@blucenere Год назад
PS loved the rabbits in the background during the Fibonacci sequence
@dumisaniarchanjelmoyo7721
@dumisaniarchanjelmoyo7721 Год назад
Amazing 🔥🔥🔥
@steveq34
@steveq34 8 месяцев назад
Best video!
@giovannateodoro3724
@giovannateodoro3724 Год назад
This is beautiful
@zeffdronin6422
@zeffdronin6422 5 дней назад
hi im new to ur channel. i love this format. like its code that i can listen to while driving or sleeping. i appreciate the emphasis on explanation
@Socratica
@Socratica 5 дней назад
We're so glad you've found us!! 💜🦉
@serta5727
@serta5727 Год назад
This is very cool, probably how Neo learned to be the one in coding the matrix. 🤓🤖
@betterstack
@betterstack 3 месяца назад
Love the Python series 🔥If anyone’s looking for more Python tutorials, we’ve released Loguru logging, task scheduling, and more to help the community too 💪
@AliMohammedBakhietIssa
@AliMohammedBakhietIssa Год назад
Thank you.
@moeal5110
@moeal5110 Год назад
This is how I imagine Vulcan women look like and think. FYI referring to original series ❤❤❤ you are "fascinating" person. love your style
@julzbuzz7243
@julzbuzz7243 Год назад
She's back
@codeispoetry
@codeispoetry Год назад
awesome
@enockoloo3814
@enockoloo3814 8 месяцев назад
At 5:05 the inner returned "wrapper" should take actual param values --> e.g wrapper(x,y)
@anc5430
@anc5430 10 месяцев назад
Great work ! By the way, I like your VS code theme. which one is it ?
@PhysicsLK
@PhysicsLK Год назад
thank youuu
@EnglishRain
@EnglishRain 11 месяцев назад
Please come back! We miss you!
@thatomofolo452
@thatomofolo452 Год назад
Wow 😲😲😲
@ZzZ-qd1zo
@ZzZ-qd1zo 4 месяца назад
This is a great video! This may be dumb, but why does the timer function need wrapper function nested inside of it? Can't a single function give the same results?
@williamscaramuzzi
@williamscaramuzzi Год назад
The tone of the speech is very good, it sounds almost like GlaDOS hahahaha
@derickd6150
@derickd6150 Год назад
Hi there! I love your content and have for years. There is one thing that I have always wanted to know though, could you tell us where you got this epic shirt/dress? I really really want one!
@SeanBlantonPhD
@SeanBlantonPhD 10 месяцев назад
i assume y'all know to use time.perf_counter or time.process_time to measure time intervals in the real world instead of time.time...the demo is better using time.time and getting 0's, I agree. Also LOVE the Talking Heads reference!!!
@AARHEAD191
@AARHEAD191 4 месяца назад
Immediate subscribe from me. Very informative, very entertaining aesthetic, and also funny.
@thomassaook7787
@thomassaook7787 Год назад
Is there any link for manuals about decorators?
@nidhalkarchoud346
@nidhalkarchoud346 Год назад
i love you socratica lady
@user-td4pf6rr2t
@user-td4pf6rr2t 2 дня назад
Like command substitution?
@stearin1978
@stearin1978 Год назад
11:27 - what was not clear for me: here we CALL the function timer with ( ). But according to definition of timer it RETURN wrapper (doesn't call it!). So we are writing here sort of : primer_factorization_timer = wrapper() calling the function timer returns.
@salehengoma5550
@salehengoma5550 9 месяцев назад
❤❤❤❤❤❤
@murphygreen8484
@murphygreen8484 Год назад
Is perf_counter more accurate than time?
@yash1152
@yash1152 Год назад
3:47 > _"time.time()"_ Do NOT use the time.time() for measuring time took in execution. time.time() returns current system time, which is not guaranteed to return precise time. *Update:* use timeit.timeit instead. it has number argument builtin to perform repetitions See a thu vu video Use time.perf_counter() or time.perf_counter_ns() instead. Refer the web page of "docs python library time". See the video "25 nooby Python habits you need to ditch" by mCoding at video id v as qUeud6DvOWI with time t starting 5m33s
@joeldrennen
@joeldrennen Год назад
wait a minute howd you type the triangle symbol in there?
@xerxes8075
@xerxes8075 Месяц назад
I saw this technic in React..
@ApprendreSansNecessite
@ApprendreSansNecessite Год назад
4:02 yes, exactly, and now you have the exact same problem with your decorator. You show higher order functions, which is a totally valid approach, and then you go back to where you started. The problem you have with the fibonacci function here 9:24 is also quite funny because you end up creating a new function for testing, which is what you should have done from the start, and your decorator syntax is more syntactically heavy than simply passing you fibonacci function to your timer function. A pragmatic person would add their timing logic to their *test* before and after they *invoke* the function being tested, not in the function body. They would also be advised to keep their test in an automated test suite. By using decorators to test functions, you make the test logic depend on the decorator, which means it cannot be automated because you need to manually instrument your function with the decorator each time you run your test. I understand that the purpose of this video is to teach decorators, not design principles or testing, but you could have used a different example. You have a responsibility. This is the kind of video that confuses learners and leads them astray.
@emman100
@emman100 Год назад
Interesting. That is a fair assessment.
@tsalVlog
@tsalVlog Год назад
The point of the fibonacci explanation seemed to be exactly what you're saying, though? To walk the viewer through the problems to get the better solution? Teaching blind rote is how you get terrible software developers. Teaching how to find the problem and solve it will get us wonderful software developers. I'm not sure what you mean by "normal person" here, because if I were hiring a developer (I am one), I would hire the one who knew how to solve problems without having all of the information -- instead of the one who had all of the information memorized, I don't care how many of the patterns they can name from That Book. It's a bit condescending to speak of folks who are self-teaching in this manner. I'm not sure you meant that, as it's clear your intention is to improve the content, but in a way you're insulting the very audience who is enjoying and learning. We're not here for design principals or algorithm critique; this isn't that channel. We're here to learn basics and help others learn them as well. If you think of this series as helping teach people how to _learn how to program, using python as the teaching language_ and not "how to python", you might see what I mean?
@ApprendreSansNecessite
@ApprendreSansNecessite Год назад
@@tsalVlog I think you are very generous in your interpretation of the video. The trope you are referring to is actually used to present a bad practice as an improvement. Nowhere is it said that this use of decorators shows poor separation of concerns, to the contrary, this fact is completely obscured, and the comical over-engineering of global_fibonacci is not addressed. I want to stress again that I know this is not a video about good design, but it is teaching a terrible approach to programming, which is to substitute good design with tools: instead of teaching that the testing logic should be moved to the testing code, you are taught a powerful way to couple the testing logic with the implementation. This is totally backwards. I have a difficult time in my job explaining to people that, just because they have a powerful testing library at they disposal for example, it does not mean they can butcher the architecture. I am forced to deal with the aftermath of this way of teaching. I am also self-taught, and you have no idea the amount of time I have wasted because of poor quality learning material. I wish I could rewind time, start over and take different decisions. Socratica obviously put a lot of effort in the production of this video, and they seem to be a reliable source, so it strikes me as odd that the issues I mentionned were overlooked. Teaching is not about making you aware of new information. It is about changing the structure of your brain. The problem when you learn the wrong thing is that you identify the wrong thing as the "right way", and since you want to be a good developer, you identify with this "right way" and you resist change when you are exposed to a different opinion or practice. I especially face this issue with people who just graduated, since self-taught people are usually more anxious about having holes in their training and are more humble as a result, but it can still happen. I am not sure I understand what you meant about hiring. I totally agree with you and it was certainly not my intention to be insulting. I apologise. You got triggered by "a normal person" and I now understand how it could have been misinterpreted. I guess I should have said "pragmatic" or something. By the way if you have suggestions for improving my original comment, I will consider them.
@jeetenzhurlollz8387
@jeetenzhurlollz8387 Год назад
i love you. :,-(
@DasIllu
@DasIllu Год назад
Ok, this here is the first time i found a tutorial that is neither trying to explain what a bit is nor is it black magic, blaming the recipient for not having read the python interpreter source code.
@lokmanturkmen8964
@lokmanturkmen8964 Год назад
which editor they are using on this video?
@Socratica
@Socratica Год назад
We use Visual Studio Code in Zen Mode. 🧘‍♀️
@goldies6702
@goldies6702 7 месяцев назад
It's like playing a video game
@aloewishus
@aloewishus Год назад
what the feature is she functioning about!?
@internetlenta7349
@internetlenta7349 Год назад
Socrática in portuguese?
@naveenbhardwaj9594
@naveenbhardwaj9594 Год назад
🎁🕊️🎁 this Love 🎁🕊️🎁
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