def _select_other_window(history: PythonHistory) -> None:
    "Toggle focus between left/right window."
    current_buffer = history.app.current_buffer
    layout = history.history_layout.layout

    if current_buffer == history.history_buffer:
        layout.current_control = history.history_layout.default_buffer_control

    elif current_buffer == history.default_buffer:
        layout.current_control = history.history_layout.history_buffer_control
Toggle focus between left/right window.
src/ptpython/history_browser.py