I'm quite new to coding and I'm using Python. The problem I have is after converting a Python file to exe some antivirus software see it as a Trojan. Contacting the different antivirus companies is something I can do. The problem come when I want to do game jams. Contacting these companies to have my exe file whitelisted isn't plausible with the time frames. Is there any way past this?

Possibly. Dealing with malware/detection can be an ever fluid thing, but there is a suggested solution available here. In essence, it involves uninstalling Pyinstaller and manually compiling its bootloader. There are a number of steps involved, but if it works it may allow you to compile your programs as needed.