def checkio(matr):
    """return a transposed matrix"""
    return map(list, zip(*matr))


if __name__ == '__main__':
    assert checkio([[1, 2],
                    [1, 2]]) == [[1, 1],
                                 [2, 2]], 'First'
    assert checkio([[1, 0, 3, 4, 0],
                    [2, 0, 4, 5, 6],
                    [3, 4, 9, 0, 6]]) == [[1, 2, 3],
                                          [0, 0, 4],
                                          [3, 4, 9],
                                          [4, 5, 0],
                                          [0, 6, 6]], 'Second'
    print('All ok')