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Solve the following problem using Python, implementing the functions described below, one line at a time
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Description:
 def _run_interpreter(variables, banner):
 """ Runs a Python interpreter console and blocks until the user exits it. :param variables: Interpreters variables (locals) :param banner: Start-up banners """

    # Script-only imports
    import code

    try:
        import readline
        import rlcompleter

        readline.set_completer(rlcompleter.Completer(variables).complete)
        readline.parse_and_bind("tab: complete")
    except ImportError:
        # readline is not available: ignore
        pass

    # Start the console
    shell = code.InteractiveConsole(variables)
    shell.interact(banner)