• Duplicate of Matrix Multiplier

• no basic tests in Python.

You should retire this kata, and maybe use your code to make a C++ translation (with the required adaptations to the specifications of the kata).

Actual tests:

In file included from main.cpp:7:
./tests.cpp:81:33: warning: treating Unicode character as whitespace [-Wunicode-whitespace]
            {71, 51, 543, 2, 86, 1, 4},
                                ^
1 warning generated.

Expected and actual values in the tests are flipped.