What is Python's Main Function Useful For?

In this video, we learn what the Python main function is useful for and how to use it.
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[@expansivegymnast1020]

THANK YOU! This is one of those things people expect you to do but never explain why you have to do it. Like, I can understand that I have to have a main function but show me why and what happens when I don't.

[@2ru2pacFan]

That is crazy as I was typing 'what is if __name__ == __main__' on the search bar, a notification popped up and it was this video. What a coincidence 😂 thanks dude

[@dogwithwatergun1546]

Thats google cookies for you. Really useful but CAN be used for something else. I know it doesn't but it can.

[@ninjacodertech]

google is spying on you...

[@dogwithwatergun1546]

@@ninjacodertech yes, but you're too boring for them to really look what you're doing.

[@ninjacodertech]

@@dogwithwatergun1546 what is wrong with you

[@dogwithwatergun1546]

@@ninjacodertech google is spying on you... like yes its 2021, if you want privacy you should start by deleting youtube.

[@Pogo_tC]

I have done a lot of reading and practicing in Python never could understand the dunder thing was and now it finally clicked for me. Thanks, man!

[@alexander.starbuck]

BRILLIANT! After watching at least 10 other tutorials, I FINALLY undersand this concept. Great teaching skills and great style, keep it up ;)

[@CliffR]

I’ve watched a few videos about this and by far you have the most clear understandable explanation

[@user-hj2ed5pe6j]

How are you calling myvalue as global variables at 6:03. When you use if ___name___ == '__main__' then myvalue is definitely not a global variable. You have to use *global myvalue* before defining it to make it global.
The error is not at all confusing. Its pretty clear.

[@disrael2101]

Ya i thought the same it's in if statement scope

[@alejrandom6592]

Only if inside a function, otherwise its implied to be global

[@holy5413]

my mind just exploded, I see lots of people using it but never had seen someone explaining it, thanks a lot!

[@tylerlee2612]

i understood this a lot more than what was discussed in the sc50 class! I need to find more simple, basic and vary beginner focused videos talking about how to structure these still though. Thanks for posting this though, it helped with a big part of the confusion on why we use these.

[@wko_]

Awesome!
I had needed this in my project and I didn't know how to do it...
Thanks again!

[@andrewjenson_original]

Thanks, I watched 5 other RUclips videos on this topic and your video explained this topic the best.

[@johnztech1651]

I like this man how he starts his videos and his explanaition. he looks fynny but serious. i expect more on python GUI

[@danlekosh]

YOU'RE TOO GREAT buddy, thanks for dissecting these python notions like that..

[@CloseStudios]

The best explaination I could find! Thanks a lot

[@Nircode]

I'm from Harvard CS50, intro to python programming, this video has helped me a lot. Thanks

[@mohammedmusthafa959]

Finally understood why we use it!
Thanks Man!

[@malakarakesh3139]

at 6:09, `myvalue` was still undefined even though it was globally defined. why was it so?

[@chaks2432]

Bruh, are you reading my mind or something? Just got lectured on the Python Subreddit yesterday for not using Main on a script I posted there, lmao

[@marcomoscoso7402]

Best explanation of this in Yt

[@rajkumar-zq4ov]

Very nice and detailed explanation...thank you so much

[@thatguythatdoesstuff7448]

Something confusing to new learners is when you use .py names that are duplicative of non dynamic syntax.
Calling the .py "main" when the if statement is not referring to the .py named main causes confusion.
A new user will see that and attempt to change '__main__' to reference the .py they are trying to call the functions from.
Otherwise, very good video.

[@seanredmond9212]

yeah I agree with other comment - saw other videos on this topic and I think your explanation was best. thanks.

[@darkuncle77]

You are the best teacher I have found. You are a genius. Thank you

[@djeros666]

Dude! WTH dude! thank ****! much love bro thanks

[@bookweerd]

Thank you this was the best explanation for this topic!

[@MrCipek1221]

Thanks :) I just counted on that I could find a video with you explaining this :D

[@user-td4pf6rr2t]

why do if __name__ == '__main__': not throw valueerror forexpecting else:

[@DubZenStep]

protect this man at all costs

[@bazzkiller1331]

Shouldn't the if __name__ == "__main__" expression be only inside the "main" script? Not in "mylibrary"...

[@vasilebordei4668]

This video helped me a lot!! Thank you!

[@Billcasiopost]

Exactly the answer I was after, thanks 👍👍

[@patriciodiaz2377]

Thanks so useful! And so easy to understand

[@0verflowSec]

Can you make video about Jython(Java + Python)

[@berkant8074]

There is just one word to describe you guy : AWESOME.

[@jromeroevo]

Great tutorial. I do have a question. Don’t you need the keyword “global” to turn a variable into a global variable ?

[@Anonymous-om5ql]

Yeah...even I was thinking of that

[@user-yd2ee6sf8k]

no, it's just what we call the variable.

[@sethadkins546]

Only if inside a function, otherwise its implied to be global

[@vatsalgandhi93]

great help man!! appreciate it !!

[@oguzhantopaloglu9442]

can you do some tutorials of pillow?

[@Rnjeazy]

Thank you s so much!

[@ivanoliveirapsd1337]

Great, help me to understand. Hugs from Brasil

[@xolaninqubezelo3091]

Great video.

[@Franx570]

Do the Nvim tutorial of the COC implementation or the new LSP of the Neovim 0.5 :(

[@Menna23326]

You are awesome!😃

[@emilioserrano7062]

beautiful, thanks a lot!!!

[@benlong1062]

This was really interesting. Thanks!

[@tushermyth]

Thanks for this! :)

[@historyrogue5056]

please do a Cython tutorial , and a question , is Cython more practical to use than CPython?

[@IzUrBoiKK]

Yes

[@historyrogue5056]

@@IzUrBoiKK Do you use it? can it actually make python code run in C code speed?

[@SiTheMon777]

Great explanation 🔥

[@cylemmulo]

Thank you so much!

[@naro108]

Great explanation

[@hicham_6544-_-]

What theme are you using in pycharm ,bro 🤔

[@alonelay]

so variable can't define as globally, but can define in local. And no error?

[@redserpent]

excellent video. Tweeted.

[@rashmikaabeyrathna1017]

grate job

[@LucPOLO]

Bro, there are two possibilities, either you’re fucking genius teacher or others are terrible craps doing it. Whatever the answer is, as many others here i finally understood this concept after a few hours of unsuccessful researches.

[@VeereshPatel15]

Love ❤ for ur efforts and ur content
In future I am expecting
videos on Frontend roles and Responsibilities like
1. What actually do frontend developers do in realtime ( different tasks)
2.. How manage 4+ experience in realtime
3. . How to crack any frontend interviews with 4+ years of experience
4.....Easy way to to crack any angular/reactjs interviews with 4+ experience/10lack package ------) ))
5....Top 20 program's to cover entire angular/reactjs syllabus.----))
6....Top 10 angular/reactjs concepts with examples

[@ninjacodertech]

ohhhhh this makes sense

[@philtoa334]

Thx_.

[@JarppaGuru]

for all main part lol

[@churchofclaus]

🤯bro

[@sohankulkarni6560]

Is sumeet your Friend

[@aditya_asundi]

first