Mine
public python v1 · immutable>>> arr = []>>> arr.append([])>>> arr[0][0] = TestTraceback (most recent call last): File "<stdin>", line 1, in ?IndexError: list assignment index out of range>>> arr = []>>> arr.append([])>>> arr[0][0] = TestTraceback (most recent call last): File "<stdin>", line 1, in ?IndexError: list assignment index out of range