Bug Report for transpose-matrix

[zoravur]

Bug Report for https://neetcode.io/problems/transpose-matrix

Please describe the bug below and include any steps to reproduce the bug or screenshots if possible.

The function accepts List[List[int]], but the following passes:

class Solution:
    def transpose(self, matrix: List[List[int]]) -> List[List[int]]:
        return list(zip(*matrix))

This solution actually turns each row in the new matrix into a tuple, which is not expected. Perhaps the return type of each sublist should be verified.