Is there a way to allow sending msgs by code during match?

[lzt007]

I've seen the project https://github.com/ValvePython/dota2 which can allow chat in lobby through python. I'm wandering is there a way to chat in match through python or other type of code?
It will be cool to encourage your teammates or taunt your enemys automaticly through a 3rd-part program with a backend AI model,but until then I haven't found a way to chat in game except using things like Pyautogui which can simulate mouse and keyboard input. That‘s not a good way for interrupting the game and potential VAC risks.