Hi, as the title describes, i noticed this unfornutate behavior preventing me to run directly python scripts in terminal without using the py command. I searched in the documentation but i couldn't find flags to prevent py launcher from opening a new window.

Are you saying this happens when you run "py.exe my-script.py"? Or only when you run "my-script.py" (without the py.exe)?

It happens when i run "my-script.py".
I checked all terminal emulators on my system, it happens on PowerShell 7, in all Windows Terminal profiles (including cmd profile), in integrated terminals on vscode but not in cmd.

This is Windows (shell) behaviour. To avoid this, you need to add the .py extension to the PATHEXT environment variable.

Thanks, it works now!

> This is Windows (shell) behaviour. To avoid this, you need to 
> add the .py extension to the PATHEXT environment variable.

PowerShell reuses the current console session only if .PY is set in PATHEXT. Otherwise Python gets executed with a flag that tells the system to allocate a new console session.

For CMD, PATHEXT only affects the file search, not how the file is executed. If the internal START command isn't used, CMD reuses the current console session. The START command defaults to making the system allocate a new console, unless the /B option is used.