GeezerVison

banner = "*pdb interact start*"
exitmsg = "*exit from pdb interact command*"

def do_interact(self, arg):
    """..."""
    ns = {**self.curframe.f_globals, **self.curframe.f_locals}
    console = _PdbInteractiveConsole(ns, message=self.message)
    banner = "*pdb interact start*"
    exitmsg = "*exit from pdb interact command*"
    if self.pyrepl_input is not None:
        console.run_interact(banner, exitmsg, use_pyrepl=True)
    else:
        with self._enable_rlcompleter(ns):
            console.run_interact(banner, exitmsg, use_pyrepl=False)

class _PdbInteractiveConsole(code.InteractiveConsole):
    def __init__(self, ns=None, message=None):
        self._message = message
        super().__init__(locals=ns, local_exit=True)

    def write(self, data):
        if self._message is not None:
            self._message(data, end='')
        else:
            super().write(data)

    def _more_lines(self, text):
        # Generic Python multi-line completeness heuristic.
        # Strips pyrepl's trailing auto-indent before compiling.
        src = text.rstrip(" \t")
        n = len(src)
        if n > 0 and text[n-1] == '\n':
            text = src
        try:
            code_obj = self.compile(text, "<stdin>", "single")
        except (OverflowError, SyntaxError, ValueError):
            lines = text.splitlines(keepends=True)
            if len(lines) == 1:
                return False
            last = lines[-1]
            return ((last.startswith((" ", "\t")) or last.strip() != "")
                    and not last.endswith("\n"))
        return code_obj is None