is len([]) not 0?

Question

i wanted to do a while loop so an empty list is appended with fibonacci numbers up to the input-th value but when i try to do by using while loop to compare length of the list to input it fails on first loop saying that the len isn’t applicable to none type???

Answer 1

len([]) is definitely 0, so the problem must be somewhere else.

Care to share your code?

Answer 2

Post your code here