I want to execute three python script that I have developed. I found one doubt, how could I do it using a python script?

I want to convert it into a .exe, because our solution is thought to be executed in machines without python installed so having an unique script would be helpful.

**Edit**: I don't know the cause of the closure of my old question, I know how to use pyinstaller, my question was how can I execute 3 python using a python script or if it is possible. Please, if you are gonna close a question be sure that the question is duplicated, you are unranking me in the forum.

Any suggestion? Thanks!