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 ...

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 ...

For example, Python's native interactive shell is a REPL where devs can type Python code and ... enhancing your development workflow." Pylance language server mode: "There's a new setting ...