Python - Why is output "None"?

Question

lst = [].append(5)
print (lst)

Answer 1

lst=[]
lst.append(5)
print (lst)

Check this lesson about lists functions:
https://www.sololearn.com/learn/JUMP_LINK__&&__Python__&&__JUMP_LINK/2433/

Answer 2

If u wanna append any element in a list u should write this
lst=[]
lst.append(5)
print(lst)
Out put is [5]

Answer 3

Append will only modify the original list.
So the original list in your example is []..
lst will receive the Return value of append method, which is "None".
To get correct result, use jesus' solution...