Python 3.13 uses a new interactive shell by default ... F3 activates the "Paste Mode", which inserts complete content instead of considering the content as finished when there are empty lines ...

ptpython: Interactive Python shell. positional arguments ... That it, the config file will be ignored when embedding ptpython in an application. Multi-line editing mode will automatically turn on when ...

Python is Object-Oriented: This means that Python supports Object-Oriented style or technique of programming that encapsulates code within objects. In interactive mode what you type is immediately run ...

However, you can now configure the Python extension to run separate files in separate interactive windows. Just open the settings page (File > Preferences > Settings), search for 'interactive window ...