Ah I see. Appreciate the response can someone here give a simple example of calling a function via signature?
I've used the forum search and I can only find examples of hooking functions with the signature but not calling them.

I know sourcemod has a unofficial gamedata release to make it work with tf2classic but I prefer source.python I'm trying to hook things such as entity creation and player run_command but they don't work at all. Nothing is output in console no matter what. Example of code that works in tf2 but not tf...