How to check how many functions returns None in a specific class ?

Question

let's say I wanna check the functions which return None in class 'list'
how to do that?

here is my attempt but it's giving me OS error

my attempt :

https://code.sololearn.com/cRReLKs7Uu62/?ref=app

Answer 1

Maybe this can help!

https://code.sololearn.com/cs4L5PENc6f5/?ref=app

Answer 2

Ratnapal Shende function itself , print out the func_list which consists of a tuple having function name and address of that function

Answer 3

Abhay Thanks for the help! 🎊

please explain this bits from last line

-->

list(i[1]()==None....

# what is 1 here?