What's the difference between the two ways of Python to generate empty nested list and append?

Question

(This question already has answers here): question from:https://stackoverflow.com/questions/66066574/whats-the-difference-between-the-two-ways-of-python-to-generate-empty-nested-li

Answer 1

Because in second one you don't create new empty list. you just add the same list 5 time. Because of that when you select the first one and append to it t will affect on all of them. Because all are the same.

try this for sure in second one:

print(B[0] is B[1])