computer input on minecraft

I'm trying to create a module in python that creates diagonal lines from two given points. The program would press "t" and paste a /setblock command into the chat box, press "enter" and it would do this over and over until the points are connected. It worked fine in 1.12.2. But then i needed to use in a 1.13.2 map, but minecraft wouldn't recognize the press of neither "t" nor "enter". I believe it's due to the new UI for the chat box