Method _is_tty_session

cmd2/cmd2.py:3422–3433

Determine if the session supports full terminal interactions. Returns True if the session is attached to a real TTY or a virtual terminal (like PipeInput in tests). Returns False if the session is running in a headless environment (DummyInput).

(session: PromptSession[str])

    @staticmethod
    def _is_tty_session(session: PromptSession[str]) -> bool:
        """Determine if the session supports full terminal interactions.

        Returns True if the session is attached to a real TTY or a virtual
        terminal (like PipeInput in tests). Returns False if the session is
        running in a headless environment (DummyInput).
        """
        # Validate against the session's assigned input driver rather than sys.stdin.
        # This respects the fallback logic in _create_main_session() and allows unit
        # tests to inject PipeInput for programmatic interaction even if paired with
        # a DummyOutput.
        return not isinstance(session.input, DummyInput)

    def _read_raw_input(
        self,