Python 3.12.1, Windows 11: shebang line #!/usr/bin/env python3 doesn't work any more

[c.buhtz at posteo.jp]

What is the "command line" on your Windows 11?

On Windows 10 it usually is "cmd.exe" (Windows Command Prompt).
On Windows 11 it usually is the "Terminal" which is different from 
cmd.exe.