Questions about Python executable and security

[micseydel]

When the user clicks yes, and allows permission to execute, are there any other measures of protection in a typical windows environment that could prevent the execution of such script? Anti-virus would not detect such script, I assume.

I don't use Windows anymore, but I wouldn't assume that Python is invisible to an anti-virus.

What might be missing from my assumptions that would prevent a python script compiled via pyinstaller to execute for security reasons?

You might find more help on this topic on a Windows security forum.

If you have the flexibility, I suggest you dive in and run experiments, software is often magical in how easily and quickly you can test things, especially in an iterative fashion (you can keep compiling more aggressive Python code, seeing at what point an AV notices it).