horizontalHeaderItem is None

[Adler]

@ChrisW67, your advice solved my problem.

I added:

table_view.setHorizontalHeaderLabels([str(x) for x in range(1, columns + 1)])
table_view.setVerticalHeaderLabels([str(x) for x in range(1, rows + 1)])

table_view.setHorizontalHeaderLabels([str(x) for x in range(1, columns + 1)])
table_view.setVerticalHeaderLabels([str(x) for x in range(1, rows + 1)])

To copy to clipboard, switch view to plain text mode