The interviewer couldn't bother to find a quiet room.

Furthermore, he seemed the least interested in the interview, switching between tabs and not even looking at the screen.

The moment one hour was up, he logged out of the call, giving me no time to ask questions at the end.

Create a spreadsheet in Python so that you can add columns, edit them, and delete them.

The columns can have formulas, which are dynamic. If a formula references one column and that column changes, the value in the cell with the formula should also change.