Python Tutorial: Generators - How to use them and the benefits you receive

Python Generators are often considered a somewhat advanced topic, but they are actually very easy to understand once you start using them on a regular basis. Actually, after you use generators for some time, you will often find them more readable and performant than other options.

In this video, we will look at what a python generator is, how and why we would use one, and the performance benefits they give us.

The code from this video can be found at:

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#Python

[cooleekova]

6 years later your explanation on generators in Python is still the best on YouTube 💙

[ocnyoura]

@Corey Schafer, I've used Python for half a year now and never really used generator functions and expressions before. Thanks for introducing me to them. You got some of the most coherent, clear and concise Python tutorials out there. And I've seen a lot of them.

[funkymunky]

You are actually a great tutor: you always show use cases, explain what goes on under the hood, and have a good pace so it doesn't get boring. Very highly recommended!

[TheFourOnSix]

I can see this being incredibly important and applicable in data science when working with large data sets!

[joshiravishankar]

Not only about this video, but about any & all of your videos, they are to the point and designed to grasp at a steady pace. Doesn't overflow at any time. I come here time to time to revisit the concepts when I can't recall anything, because you have explained them so well that, we can understand them from scratch in no time. Best python tutorials on the net and better than any paid one too. Thank you again :)

[prabumukilan]

9 years later your explanation on generators in python is still the best on YouTube tutorial Thank you sir❤

[sudarsandm]

Because of you Corey I was able to get offers for a contract job at Cisco and Google as Python test Automation Engineer. Thank you very much.

[xinyi]

everytime i find a new topic i need to study, i get relieved when i see you've already covered them, love all your tutorials!

[chunchunmaru]

Literally never heard of generators and I've been doing Python for a while, great video.

[hobby_coding]

i didn't check all python tutorial in youtube yet but i think this is best one - please keep the good work so many ppl are learning from you -

[Vijay-Yarramsetty]

who else got here to brush-up their knowledge.
You are one of the youtubers I relied heavily to get a developer job. Thanks Corey!

[carolynsaund]

I never knew I needed Matthew McConaughey to teach me how to use generator objects but I did. Thanks pal, great vid.

[danielcrigan]

Every topic I cover on Python with the other resources, I have to come back to your videos and solidify my knowledge on that! Your videos are great, clear, short and straight to the point! I love it

[omarfessi]

for those who are watching this video in 2024 xrange is python2 specific and does not exist in python3 (which is equivalent to range in python3), range in python2 does creates a list in memory that's why Corey tried to avoid them by using xrange. Anyway @Corey you are still the best instructor on youtube. Thank you

[nriezedichisom]

I have gone through this topic many times from other sources and this is the first and only time it made sense. Thank you so much for taking out the time to make this.

[plmacleod]

Thank you, Corey. This (along with data structure) is a game-changer for me in terms of efficiency. I'm surprised why most Python courses don't teach this.

[Pangpizza]

I just want to say that you Corey blow my mind when it comes to easily understandable explanations. It is so clear, to-the-point, relevant and useful. Keep it up! Donated to you now!

[Praveshan]

That memory usage example at the end was perfect, thank you! It really helped me understand this concept.

[veerannabandaru]

@Corey Schafer, I have seen many videos and read many articles on generators and iterators but this video gave me better understanding. Thanks for the video.

[saiakhil]

I've been searching for reliable sources to learn python. I came across Corey Schafer and never left since then. Corey schafer stan