Function run_multiline_interactive_console

Lib/_pyrepl/simple_interact.py:100–180

(
    console: code.InteractiveConsole,
    *,
    future_flags: int = 0,
)

def run_multiline_interactive_console(
    console: code.InteractiveConsole,
    *,
    future_flags: int = 0,
) -> None:
    from .readline import _setup
    _setup(console.locals)
    if future_flags:
        console.compile.compiler.flags |= future_flags

    more_lines = functools.partial(_more_lines, console)
    input_n = 0

    _is_x_showrefcount_set = sys._xoptions.get("showrefcount")
    _is_pydebug_build = hasattr(sys, "gettotalrefcount")
    show_ref_count = _is_x_showrefcount_set and _is_pydebug_build

    def maybe_run_command(statement: str) -> bool:
        statement = statement.strip()
        if statement in console.locals or statement not in REPL_COMMANDS:
            return False

        reader = _get_reader()
        reader.history.pop()  # skip internal commands in history
        command = REPL_COMMANDS[statement]
        if callable(command):
            # Make sure that history does not change because of commands
            with reader.suspend_history(), reader.suspend_colorization():
                command()
            return True
        return False

    while True:
        try:
            try:
                sys.stdout.flush()
            except Exception:
                pass

            ps1 = getattr(sys, "ps1", ">>> ")
            ps2 = getattr(sys, "ps2", "... ")
            try:
                statement = multiline_input(more_lines, ps1, ps2)
            except EOFError:
                break

            if maybe_run_command(statement):
                continue

            input_name = f"<python-input-{input_n}>"
            more = console.push(_strip_final_indent(statement), filename=input_name, _symbol="single")  # type: ignore[call-arg]
            assert not more
            try:
                append_history_file()
            except (FileNotFoundError, PermissionError, OSError) as e:
                warnings.warn(f"failed to open the history file for writing: {e}")

            input_n += 1