Problem in python

Question

Why is the list name shown as none after appending an element. What does that that "None" mean?

I am new to programming and I have just started with python. Please ignore any silly mistakes by me.
https://code.sololearn.com/c89McJc8Up4f/?ref=app

Answer 1

You have to declare firstly your added_state variable as empty list.then assign to it state list .Or you have to remove assignment and append directly to state list with no need to added_state variable

Answer 2

You might find a good explanation here.
https://stackoverflow.com/questions/16641119/why-does-append-always-return-none-in-JUMP_LINK__&&__python__&&__JUMP_LINK

Answer 3

Thanks Avinesh & HBhZ_C

Answer 4

HBhZ_C thanx once again.

Answer 5

HBhZ_C can u plz tell me how will I declare my variable empty

Answer 6

You will declare an empty list .Here you declare added_state = [] with no value.Then you can append to it.