What is a CLOSURE and how to use it in Python?

After this video, you are able to describe a closure, can write one in Python and decide if it is useful for you in your code.

C H A P T E R S
0:33 The problem with changing a global variable from a function
1:47 Use a closure to encapsulate the global variable
3:00 Where the name closure comes from
3:28 Comparing closures to a class with a single function

M Y O N L I N E T R A I N I N G

#pythonforeveryone #programming #python

[swordlion]

This is the best explanation so far. Everybody is telling how to use them but no one explains WHY to use them.. So after all they are for encapsulation.

[MM-oqlb]

After going through tons of tutorials of tech dudes who make videos just to make money and not to really teach newbies, this one really taught me. Thank you.

[DylanASD]

This is the clearest explanation on YouTube by far. keeping up the good work from Hong Kong.

[Sergio-pdsh]

Great stuff. That's exactly what I was after for some time now! I have been reading the online tutorials about closures, which give you same examples over and over, so that you know how it's done, but they leave you with no clue to why would you actually do it.
This is the perfect explanation that i was after. Thanks a lot! I have subscribed to your channel! Keep it up, please!

[thetutorialdoctor]

I finally get it, and this will help with an issue I’m always running into. Thank you!

[azizbekibnhamid]

Thanks bro, just as simple explanation as python

[kamranzamanni]

Was having hard time with closures, this video explains it clearly. Thank you!

[zhzolwu]

definitely the best and short explanation i found so far, good work bro

[deonyz]

Thank you! Third video on the subject and first now I got it.

[iwatchtvwithportal]

I never thought about closure can actually mimic a class. Or can I say classes are just syntactic sugar for closures?

[devworks]

wow. never seen such an explanation. thanks a lot

[omarozt]

I still don't get it. How do you call enter_num with a parameter, even it refers to a function enter_number_outer, which has no parameter?

[johnaweiss]

1:10 Why don't you need the global keyword inside the function?
numbers = []
def enter_number(x):
global numbers
....