Generators in Python || Python Tutorial || Learn Python Programming

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2 жыл бұрын

𝙎𝙩𝙖𝙮 𝙞𝙣 𝙩𝙝𝙚 𝙡𝙤𝙤𝙥 𝙄𝙉𝙁𝙄𝙉𝙄𝙏𝙀𝙇𝙔: snu.socratica.com/python Learn how to use generators in Python. We'll cover two types: Generator Functions and Generator Expressions. Generator functions use the "yield" keyword, while generator expressions look like a "tuple comprehension." Generators are a powerful and efficient tool for use when looping over large amounts of data.
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Python instructor: Ulka Simone Mohanty (@ulkam on Twitter)
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#Python #Generators #Coding

Пікірлер: 181

@Socratica 2 жыл бұрын

Wear a Socratica Python shirt for good luck coding: shop.socratica.com/products/python-by-socratica

@THEMATT222 2 жыл бұрын

Noice 👍

@rio_agustian_ 2 жыл бұрын

FINALLY! Another python tutorial

@ekandrot 2 жыл бұрын

To speed up the prime generator, don't add 2 to cache, because all numbers tested are odd and therefore compare false. In the inner loop between line 13 and 14, break if n < p*p - this will have the biggest speedup, because it will only check up to the sqrt of n. So 3 would be added without checks, 5 through 9 will only compare against the number 3. 11 through 25 only using numbers 3 and 5. Etc. vs using all of the numbers in the cache to find each new prime.

@murphygreen8484 2 жыл бұрын

I look forward to contributing to the acquisition of a human

@Socratica 2 жыл бұрын

We know they're out there!! 💜🦉

@markrobinsontraining 2 жыл бұрын

I've learnt so much from your videos; they are as informative as they are fun. Thanks so much!

@AlbertoAvilaGarcia 15 күн бұрын

embedded humor in these videos is proportional to the love they cook them with 🥰

@satoriblue1349 2 жыл бұрын

I've been watching your videos for about 5 years now and I just want to let you know that I now have a great full-time job as a consultant and am invaluable to my team thanks to my ability to code, which in part is thanks to you!

@skwerone Жыл бұрын

I got a question. I got an unusual tech Stack and don't know what position I should be submitting to. I know how to code in python mainly scraping, organizing data, sending API requests, formatting texts. I also know SEO, copywriting, creating websites and also 3D modelisation and motion graphics. I'm good at all what I mentioned.

@anonfourtyfive Жыл бұрын

@@skwerone Hi, You're currently in the same path that I am.. Just saying. We are searching the same things ( Probably more people than we think are trying ) I'm now speaking Python, and wish to find people to speak with. If you want, respond me back, I use selenium with tkinter GUI strap in a beautiful OOP structure, You'll understand. Kindly, Guillaume. ( William )

@jay_wright_thats_right 5 ай бұрын

@@skwerone can't anyone tell you what to do. Learn who you are and what you love to do then research multiple roles. I can cook but that doesn't mean I want to be a chef.

@andrewballr 2 жыл бұрын

These videos are absolutely brilliant.I like the format, short easily digestible videos on a very specific feature of python.

@danielbadra9447 2 жыл бұрын

No programing tutorial channel has such well written and engaging videos.

@laurentgauthier8742 2 жыл бұрын

Those python videos and their slightly different approach are always crystal clear and interesting. Thank you very much for your work!

@user-we8nn3vp5d 2 жыл бұрын

A similar Haskell tutorial would be both a challenge for Socratica and a valuable source of knowledge for those who want to learn the language.

@Socratica 2 жыл бұрын

You can "stay in the Python loop" by signing up for our Python newsletter: snu.socratica.com/python

@anujkondhalkar9776 2 жыл бұрын

All I have to say that those python videos from your channel are best. Would you make a complete course laylist from beginner to advanced. Some time it feels like you made it because you get pleasure frome it. Thank You for your efforts.

@MrOvipare 2 жыл бұрын

I've known Socratica with the excellent abstract algebra videos, glad to see that the Python series is just as good!

@BobP-ks1mu Жыл бұрын

So happy I found your channel. Great video...I like your approach to teaching and how you break things down and provide several examples. The information provided has greatly improved my understanding!

@lxathu 2 жыл бұрын

Never was so much owed by so many to so few for so short but so informative videos.

@Socratica 2 жыл бұрын

💜🦉

@theepicguy6575 2 жыл бұрын

that patreon addition was real smoooth! very infomative nonetheless. did expect yield with somewhere cause i stagger there

@vikranttyagiRN 2 жыл бұрын

Always great tutorials from this channel. Really appreciated

@IvanTheChemist 2 жыл бұрын

I wanted this video like a month ago! Great job and a bunch of thanks!

@rrahll 2 жыл бұрын

best artificial intelligence visualization in the world. Thanks for the tutorial )

@stuarthys9879 2 жыл бұрын

I had never considered generating generators, but if I generate any ideas I will iterate until I return a tractable solution. Thanks for the video. I appreciate the ones that are aimed higher than beginner level!

@sibyjoseplathottam4828 2 жыл бұрын

I didn't even know that there were Python features like generator expressions! Thank you Socratica!

@amauta5 2 жыл бұрын

I always love this series!

@Ghostaladdin 2 жыл бұрын

Your videos really are the best - I have watched them over and over again as they are as entertaining as they are educative. Really really learned a lot. Thank you thank you for all the work you put into creating this masterpiece (officially my favorite videos on coding hands down!) One quick ask, if you'll indulge me - could you possibly make something on Linked Lists, Binary Trees (in that order). Seen so much content on these but I bet hearing it from you would make it that much easier to digest/understand. Looking forward to this.

@user-vi1tw1xw7r 3 ай бұрын

I really enjoy the way these are presented. Clear and informative too.

@54peace 2 жыл бұрын

welcome back !! waiting for more python tutos... so much love from Myanmar🤍🤍🤍

@Socratica 2 жыл бұрын

Hello to our Socratica Friends in Myanmar!! 💜🦉

@youssefelamrani7905 2 жыл бұрын

Shit since I started python i've never understood generators like this, it's amazing that we have Socratica to be honest thank you so freaking much

@nirajabcd 2 жыл бұрын

seriously these videos are on another level..

@vadymvv 2 жыл бұрын

I'm not a noob in programming, but i was strugle to understand yield in functions. Thanks to you all is clear now!

@Socratica 2 жыл бұрын

This is wonderful to read, thank you for telling us! 💜🦉

@sadhappy8860 10 ай бұрын

It's odd isn't it, with programming someone will say the right words or use the right analogy for it to make sense. That table Tennis analogy is great!

@daniellow426 2 жыл бұрын

Learning a lot from you folks. Thank you.

@raphaelprates1500 8 ай бұрын

@GIULI4994 28 күн бұрын

this is the best video I've watched about generators! such an important but somehow slippery concept to explain

@KnightAmine Жыл бұрын

OMG ! Thanks alot! Clearer, it could not be ! 🙏

@AhmadAsmndr 2 жыл бұрын

I am very happy to see you again with another amazing video. thank you very much

@jemzhatfelid5522 2 жыл бұрын

I'm pretty new to python and I'm trying to learn more about the language. This video was super well done and easy to understand, and I learned exactly what I wanted to. Also that circuit board dress is so cool!

@Reep21 2 жыл бұрын

I've learned so much from this channel

@conzymaher 6 ай бұрын

Very helpful video and the style is hilarious. love it! Subscribed

@gvimvim 9 ай бұрын

this footage is awesome

@kenhaley4 2 жыл бұрын

Never knew about the generator expression. Thanks!

2 жыл бұрын

Awesome and helpful video! Great work 🥰

@alurma 2 жыл бұрын

Awesome video, didn't know about generators. Thanks!

@mrmuranga 2 жыл бұрын

Thank you..always looking forward to the next video....

@serta5727 2 жыл бұрын

It seems some knowledge was generated in my head :)

@Jawahar-Engr. Жыл бұрын

Thank You AI Teacher... Now iam Confident enough in dealing with python generator 😃❤

@bugsolar4610 Жыл бұрын

Love and learnt so much from your videos, Want videos on Multithreading, multiprocessing, Class and static methods, public private and protected methods, super keyword.

@yonaguska2050 2 жыл бұрын

I've missed these tutorials

@bass9052 2 жыл бұрын

Happy to see you again

@jhuyt- 2 жыл бұрын

Instead of using a sentinel value in the inner for loop of the prime generator, you can use the `for ... else` construction. It's relatively unknown but it's perfect for this

@alexgora7530 2 жыл бұрын

LOVE YOUR WORK!!!

@piotrmazgaj Жыл бұрын

This is gold!

@ssh17hx0r 2 жыл бұрын

This is fantastic!

@brpawankumariyengar4227 2 жыл бұрын

Great Video …. Thanks …. I learn python from your videos

@crazywallcat 3 ай бұрын

This is so good!

@ubertcoolie8694 2 жыл бұрын

Thanks for the video, it is great!

@abyss2200 2 жыл бұрын

Got a bit late, was so tired lately How's Socratica💝

@karim-gb5nx 2 жыл бұрын

This is actually impressive

@PunmasterSTP Жыл бұрын

Generators in Python generating interest. The amount of education in Socratica's videos Is indeed intense. Expense -s seem, Like what they have a lot. Let's help them out And give it a thought. Bot, Is what they're not using. Care, Is what they give. If they kept making videos till the end of time, Then knowledge would always live!

@MJ-em_jay 2 жыл бұрын

I like the humor in these videos.

@shudiptosekharroy651 2 жыл бұрын

Thanks!

@Socratica 2 жыл бұрын

Thank you for your support, kind Socratica Friend!! 💜🦉

@chris9352 2 жыл бұрын

Oh, she's back!

@dw2291 Жыл бұрын

Great vid, a lot of fun.

@Tuxiswatching 2 жыл бұрын

The prime generator will be way more efficient, if you only check until the square root of n is reached.

@Daniel-ng8fi 2 жыл бұрын

yeah, that would be a big speed up. Also (this wont really have any effect) you don't need 2 in the prime_cache as every number you are testing is odd

@kquat7899 2 жыл бұрын

This was covered in an earlier video in the series.

@ChrisHalden007 2 жыл бұрын

Great video. Thanks

@douglassoaresmantova 2 жыл бұрын

I love this channel

@__raghu.vir_ 2 жыл бұрын

Good job, ❤️from india

@nullsemicolon 2 жыл бұрын

Great video!

@muntedme203 Жыл бұрын

What a sense of humour...love it 😆

@alinaderiparizi7193 Ай бұрын

another awesome!

@RachidMarzouki 2 жыл бұрын

Excellent

@kirbymarchbarcena 2 жыл бұрын

ME: Another great lesson, what can you say about this? PYTHON: Hissssssss!

@skilz8098 2 жыл бұрын

How did a python turn into a hydra? Generators!

@truckermoose 9 ай бұрын

Thanks

@Socratica 9 ай бұрын

Thank you for your kind support! 💜🦉

@ChicoCuantico 2 жыл бұрын

Why do you call close() method instead using break in order to stop the for loop?

@skilz8098 2 жыл бұрын

I'd like to see an Assembly Tutorial from this channel!

@theblindprogrammer 2 жыл бұрын

What is Assembly used for these days? I thought C replaced Assembly

@skilz8098 2 жыл бұрын

@@theblindprogrammer It can be used for a lot of things, especially when you are designing your own ISA...

@miguelangelvillafuerte3328 2 жыл бұрын

brilliant and spooky !!!

@SanataniAryavrat 2 жыл бұрын

Good to see "Ulka Mohanty", the robotic actor

@snoopstp4189 2 жыл бұрын

willing to admit Ulka is half the reason I watch these...

@thinboxdictator6720 2 жыл бұрын

I remember computerphile did something like this on yield primes: def nats(n:int=2) -> int: """Natural numbers.""" while True: yield n n += 1 def sieve(s): n = next(s) yield n yield from sieve(i for i in s if i % n != 0) primes = sieve(nats()) MAX = 1000 for number in primes: print(number) if number > MAX: break but recursion limit breaks it with higher MAX value

@volbla 5 ай бұрын

I recently found out about the "yield from" expression. You can use it to create generators with a recursive definition.

@SergiiStarodubtsev 2 жыл бұрын

very nice!

@bckzilla 2 жыл бұрын

Very nice.

@mihalynemes4243 2 жыл бұрын

A small optimization for the generation of prime numbers: instead of storing the found ones in a list, you could put them in a set.

@stuarthys9879 2 жыл бұрын

I’m curious, why would this improve performance?

@mihalynemes4243 2 жыл бұрын

@@stuarthys9879 It is much quicker to look up a member in a set than in a list.

@Daniel_WR_Hart Жыл бұрын

That's only if you're looking for the presence of one specific item. All found primes need to be checked anyways to verify the current number, so it wouldn't matter in this case.

@mihalynemes4243 Жыл бұрын

@@Daniel_WR_Hart Yes, you're right!

@sebavergarasassi6462 2 жыл бұрын

¡Gracias!

@Socratica 2 жыл бұрын

Thank you for your kind support!! 💜🦉

@FilterYT 2 жыл бұрын

I would like to compliment the presenter, thank you.

@MIKIBURGOS 9 ай бұрын

6:08 how is a generator expression different than a set syntactically? Because I would assume (x**2 for x in y) is a set (and therefore store all those numbers in your memory)

@sayanghosh6996 5 ай бұрын

do you mean tuple? sets are enclosed in { }

@mawkuri5496 2 жыл бұрын

i hope you create a machine learning tutorials using python. that would be awesome.. and math for machine learning separated playlist

@thegenxgamerguy6562 2 жыл бұрын

How to speed up: 1. Don't put 2 into the cache, because iterating 3 by 2 never results in an even number 2. Use the fact that all prime numbers greater than 3 are congruent to 1 or 5 mod 6 (you can massively speed up) 3. Only iterate up to square root of (n) when checking for primeness This will give you a massive speedup.

@hackerxxspacex6935 2 жыл бұрын

Can you please explain point number 2 and 3.

@thegenxgamerguy6562 2 жыл бұрын

@@hackerxxspacex6935 Of course. Ad 2): All prime numbers > 3 are either 6k+1 or 6k-1 where k is a natural number. Examplea: 7 = 6 * 1 + 1 11 = 6 * 2 - 1 It's important though that of course not all numbers of one of those forms are prime, but you can exclude a large portion of the natural numbers from the division (actually: modulo) testing. I also use this to unroll my loop when I need a quick and dirty prime number test, because I do loop = loop + 6 and then the two divisions (sieving only requires prime numbers as divisors). Saying they are congruent to either 1 or 5 mod 6 is the same sentence, just shorter. Oh, and also I do a preliminary check if n mod 6 is either 1 or 5 to weed out many n before even starting to loop. Thats helpful, too. Ad 3): If you want to test n for primeness you only need to do division testing up to the square root of n (sqrt(n)) because sqrt(n) * sqrt(n) is already n.

@RichardGreco 2 жыл бұрын

Another great python tutorial. You should develop another way to accept financial support. I know someone is taking a big cut somewhere and I'd rather not give them anymore right now.

@Daniel_WR_Hart Жыл бұрын

To answer the question weighing on everyone's mind, it is possible to create a generator that generates generators: import itertools def gens(): yield itertools.count(1, 5) yield itertools.count(10, 3) yield itertools.count(20, 2) for gen in gens(): for x in gen: print(x) if x > 30: break

@yonatantre 2 жыл бұрын

please please make a js tutorial u r the best

@MrEgol 2 жыл бұрын

Grazie.

@Socratica 2 жыл бұрын

Many thanks for your kind support!! It's such a help. 💜🦉

@simpletechtutorial4600 2 жыл бұрын

Hi , great lesson & good job , thanks for that kind of helpful tutorial, I want to eiditing like you , can you start nxt lesson on eiditing

@giftfromyoutube 11 ай бұрын

I just so much love her...😃

@marcin2x4 2 жыл бұрын

Can we do in the next video following concepts? - name mangling (__double_leading_underscore name for class attribute) - @staticmethod - decorators - _single_leading_underscore

@hanfmampf1234 2 жыл бұрын

Seems like magic to me

@ehudkotegaro 10 ай бұрын

maybe instead of looping over the primes in primecache you can define a variable fact=2 before the first loop, that will contain (n-1)! Than to check if n is prime we check weather (fact+1)%n==0, and to get the next factorial we need to multiply fact by n(n+1).