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

𝙎𝙩𝙖𝙮 𝙞𝙣 𝙩𝙝𝙚 𝙡𝙤𝙤𝙥 𝙄𝙉𝙁𝙄𝙉𝙄𝙏𝙀𝙇𝙔: snu.socratica.... 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)
Written & Produced by Michael Harrison
#Python #Generators #Coding

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[@THEMATT222]

Noice 👍

[@satoriblue1349]

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]

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]

@@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]

@@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.

[@ekandrot]

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.

[@markrobinsontraining]

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

[@rio_agustian_]

FINALLY! Another python tutorial

[@andrewballr]

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

[@murphygreen8484]

I look forward to contributing to the acquisition of a human

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We know they're out there!! 💜🦉

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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.

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

[@АлексейБаскинов]

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.

[@lxathu]

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

[@Socratica]

💜🦉

[@vadymvv]

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

[@Socratica]

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

[@sadhappy8860]

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!

[@laurentgauthier8742]

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

[@s-code-b]

This is my first ever encounter with Socratica (I think). First, thanks to Socratica for the educational content & for the quality production. Secondly, thank you additionally for inviting a Taelon to deliver the lecture. It's been the most flabbergastingly surprising delivery. I almost ran for cover😳. "Earth: Final Conflict" (SciFi by Gene Roddenberry) introduces the Taelon (alien) race to the human race on their arrival on Earth. I thought for a second it was either Da'an or Zo'or up there. I didn't know what to do. To makes things worse, she says @6:28, "This will only end when the last star burns out or we run out of memory, whichever happens first." Where's my blanky🥴? One wouldn't dare nod-off in lecture with a teacher like her. But, seriously, grateful for the the quality content.

[@theepicguy6575]

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

[@MrOvipare]

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

[@stuarthys9879]

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!

[@AlbertoAvilaGarcia]

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

[@rrahll]

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

[@youssefelamrani7905]

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

[@BobP-ks1mu]

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!

[@GIULI4994]

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

[@BrianSwatton]

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

[@Ghostaladdin]

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.

[@sibyjoseplathottam4828]

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

[@pokerchannel6991]

I love the production process. I love you

[@serta5727]

It seems some knowledge was generated in my head :)

[@nirajabcd]

seriously these videos are on another level..

[@Tuxiswatching]

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

[@Daniel-ng8fi]

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]

This was covered in an earlier video in the series.

[@PunmasterSTP]

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!

[@jemzhatfelid5522]

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!

[@Jawahar-Engr.]

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

[@jhuyt-]

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

[@SanataniAryavrat]

Good to see "Ulka Mohanty", the robotic actor

[@snoopstp4189]

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

[@vikranttyagiRN]

Always great tutorials from this channel. Really appreciated

[@shudiptosekharroy651]

Thanks!

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

[@IvanTheChemist]

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

[@mihalynemes4243]

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]

I’m curious, why would this improve performance?

[@mihalynemes4243]

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

[@Daniel_WR_Hart]

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]

@@Daniel_WR_Hart Yes, you're right!

[@raphaelprates1500]

[@KnightAmine]

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

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

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

[@Daniel_WR_Hart]

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

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I've learned so much from this channel

[@bugsolar4610]

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

[@MJ-em_jay]

I like the humor in these videos.

[@volbla]

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

[@kirbymarchbarcena]

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

[@skilz8098]

How did a python turn into a hydra? Generators!

[@kenhaley4]

Never knew about the generator expression. Thanks!

[@piotrmazgaj]

This is gold!

[@muntedme203]

What a sense of humour...love it 😆

[@daniellow426]

Learning a lot from you folks. Thank you.

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This is actually impressive

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Happy to see you again

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I've missed these tutorials

[@amauta5]

I always love this series!

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Oh, she's back!

[@ehudkotegaro]

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).

[@skilz8098]

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

[@theblindprogrammer]

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

[@skilz8098]

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

[@AhmadAsmndr]

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

[@FilterYT]

I would like to compliment the presenter, thank you.

[@MaximoPower2024]

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

[@ilkhomibrokhimov4729]

Thanks

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Thank you for your kind support! We're so glad you're watching!! 💜🦉

[@alurma]

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

[@RichardGreco]

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.

Awesome and helpful video! Great work 🥰

[@mrmuranga]

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

[@thinboxdictator6720]

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

[@MrEgol]

Grazie.

[@Socratica]

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

[@brpawankumariyengar4227]

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

[@thegenxgamerguy6562]

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]

Can you please explain point number 2 and 3.

[@thegenxgamerguy6562]

@@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.

[@gvimvim]

this footage is awesome

[@ChrisHalden007]

Great video. Thanks

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Good job, ❤️from india

[@alexgora7530]

LOVE YOUR WORK!!!

[@crazywallcat]

This is so good!

[@RachidMarzouki]

Excellent

[@dw2291]

Great vid, a lot of fun.

[@ssh17hx0r]

This is fantastic!

[@mawkuri5496]

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

[@marcin2x4]

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

[@bckzilla]

Very nice.

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I joined this channel primarily to watch your Python videos. They are relaxing and stimulating simultaneously. After 20 years as a software engineer, it is quite unexpected ! For each video() Smile = Smile + 100 Next Print(Smile) 3700. #my face hurts ! Thank you! ….. my I have another please ? If answer = “Not now or in any other space in time” Then 😢😭 Else 🖖🏼

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I love this channel

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I just so much love her...😃

[@ubertcoolie8694]

Thanks for the video, it is great!

[@hanfmampf1234]

Seems like magic to me

[@qizhenggu20]

“is_prime” in code could be replaced by a for-else statement

[@MIKIBURGOS]

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]

do you mean tuple? sets are enclosed in { }

[@sebavergarasassi6462]

¡Gracias!

[@Socratica]

Thank you for your kind support!! 💜🦉

[@omarcruz6326]

Python Videos are back ! 😍

[@nullsemicolon]

Great video!

[@yonatantre]

please please make a js tutorial u r the best

[@SergiiStarodubtsev]

very nice!

[@ozonefriendlyman]

"Pleasantly more finite" :)

[@infinityinf1]

Yes, it is possible to generate generators that generate generators.

[@alinaderiparizi7193]

another awesome!

[@Hardzinho_yay]

The most important thing Ilearned in this video is how 'yield' is properly pronounced

[@coolfreaks68]

*Is Socratica related to Socratis in some way ?* 😁

[@TheWyrdSmythe]

Great last lines! 😂