How to use the ptpython.ipython.embed function in ptpython

if os.path.exists(path):
                with open(path, 'rb') as f:
                    code = compile(f.read(), path, 'exec')
                    six.exec_(code, user_ns, user_ns)
            else:
                print('File not found: {}\n\n'.format(path))
                sys.exit(1)

        # Apply config file
        def configure(repl):
            path = os.path.join(config_dir, 'config.py')
            if os.path.exists(path):
                run_config(repl, path)

        # Run interactive shell.
        embed(vi_mode=vi_mode,
              history_filename=os.path.join(data_dir, 'history'),
              configure=configure,
              user_ns=user_ns,
              title='IPython REPL (ptipython)')

startup_paths.append(os.environ["PYTHONSTARTUP"])
        # exec scripts from startup paths
        for path in startup_paths:
            if Path(path).exists():
                with Path(path).open("rb") as f:
                    code = compile(f.read(), path, "exec")
                    exec(code, self.context, self.context)
            else:
                print(f"File not found: {path}\n\n")
                sys.exit(1)

        ipy_config = load_default_config()
        ipy_config.InteractiveShellEmbed = ipy_config.TerminalInteractiveShell
        ipy_config["InteractiveShellApp"]["extensions"] = self.ipy_extensions
        configure_ipython_prompt(ipy_config, prompt=self.prompt, output=self.output)
        embed(
            config=ipy_config,
            configure=configure,
            history_filename=config_dir / "history",
            user_ns=self.context,
            header=self.banner,
            vi_mode=self.ptpy_vi_mode,
        )
        return None

def run_ptipython(imported_objects, vi_mode=False):
    from ptpython.repl import run_config
    from ptpython.ipython import embed
    history_filename = os.path.expanduser('~/.ptpython_history')
    embed(user_ns=imported_objects, history_filename=history_filename,
          vi_mode=vi_mode, configure=run_config)

def run_ptipython():
            imported_objects = self.get_imported_objects(options)
            history_filename = os.path.expanduser('~/.ptpython_history')
            embed(user_ns=imported_objects, history_filename=history_filename,
                  vi_mode=options['vi_mode'], configure=run_config)
        return run_ptipython

if not no_ptpython:
            # Try PtPython
            try:
                from ptpython.repl import embed
                history_filename = os.path.expanduser('~/.ptpython_history')
                embed(globals=context, history_filename=history_filename)
                return
            except ImportError:
                pass

        if not no_bpython:
            # Try BPython
            try:
                from bpython import embed
                embed(banner=self.banner, locals_=context)
                return
            except ImportError:
                pass

        if not no_ipython:
            # Try IPython
            try:
                from IPython import embed
                embed(banner1=self.banner, user_ns=context)
                return
            except ImportError:
                pass

        # Use basic python shell
        code.interact(self.banner, local=context)

embed(locals_=context)
            return
        except ImportError:
            pass

        # Try ipython
        try:
            try:
                # 0.10.x
                from IPython.Shell import IPShellEmbed
                ipshell = IPShellEmbed(banner='Welcome to badwolf shell\n')
                ipshell(global_ns=dict(), local_ns=context)
            except ImportError:
                # 0.12+
                from IPython import embed
                embed(banner1='Welcome to badwolf shell\n', user_ns=context)
            return
        except ImportError:
            pass

        # Use basic python shell
        import code

        code.interact(local=context)

'app': app,
    }

    with app.app_context():
        # Try ptpython
        try:
            from ptpython.ipython import embed
            embed(user_ns=context, vi_mode=True)
            return
        except ImportError:
            pass

        # Try bpython
        try:
            from bpython import embed
            embed(locals_=context)
            return
        except ImportError:
            pass

        # Try ipython
        try:
            try:
                # 0.10.x
                from IPython.Shell import IPShellEmbed
                ipshell = IPShellEmbed(banner='Welcome to badwolf shell\n')
                ipshell(global_ns=dict(), local_ns=context)
            except ImportError:
                # 0.12+
                from IPython import embed
                embed(banner1='Welcome to badwolf shell\n', user_ns=context)
            return

def embed(*a, **kw):
        """
        DEPRECATED. Only for backwards compatibility.
        Please call ptpython.ipython.embed directly!
        """
        ptpython.ipython.embed(*a, **kw)
except ImportError as e:

if not no_ptipython:
            # Try PtIPython
            try:
                from ptpython.ipython import embed
                history_filename = os.path.expanduser('~/.ptpython_history')
                embed(banner1=self.banner, user_ns=context, history_filename=history_filename)
                return
            except ImportError:
                pass

        if not no_ptpython:
            # Try PtPython
            try:
                from ptpython.repl import embed
                history_filename = os.path.expanduser('~/.ptpython_history')
                embed(globals=context, history_filename=history_filename)
                return
            except ImportError:
                pass

        if not no_bpython:
            # Try BPython
            try:
                from bpython import embed
                embed(banner=self.banner, locals_=context)
                return
            except ImportError:
                pass

        if not no_ipython:
            # Try IPython
            try: