_RowCollection has no method add

[PaleNeutron]

This method does not exist but documented : https://python-pptx.readthedocs.io/en/latest/dev/analysis/tbl-table.html#rowcollection-class

[PaleNeutron]

And I found a really old pr which could be very helpful

#399

[jeromeof]

Would love this fixed also - Strange that its is in the documentation but not in the code

[mizsakpeti]

It is only in the "Anlysis" part of the documentation (as a feature to implement in the future), not in the API part:
https://python-pptx.readthedocs.io/en/latest/api/table.html?highlight=table#pptx.table.Table

But based on the linked PR I think you can write your own function to add a row to a table.