def cli(ctx, env):
    """Enters a shell for slcli."""

    # Set up the environment
    env = copy.deepcopy(env)
    env.load_modules_from_python(routes.ALL_ROUTES)
    env.aliases.update(routes.ALL_ALIASES)
    env.vars['global_args'] = ctx.parent.params
    env.vars['is_shell'] = True
    env.vars['last_exit_code'] = 0

    # Set up prompt_toolkit settings
    app_path = click.get_app_dir('softlayer_shell')
    if not os.path.exists(app_path):
        os.makedirs(app_path)
    complete = completer.ShellCompleter(core.cli)

    while True:
        try:
            line = p_shortcuts.prompt(
                completer=complete,
                complete_while_typing=True,
                auto_suggest=p_auto_suggest.AutoSuggestFromHistory(),
            )

            # Parse arguments
            try:
                args = shlex.split(line)
            except ValueError as ex:
                print("Invalid Command: %s" % ex)
                continue

            if not args:
                continue

            # Run Command
            try:
                # Reset client so that the client gets refreshed
                env.client = None
                core.main(args=list(get_env_args(env)) + args,
                          obj=env,
                          prog_name="",
                          reraise_exceptions=True)
            except SystemExit as ex:
                env.vars['last_exit_code'] = ex.code
            except EOFError:
                return
            except ShellExit:
                return
            except Exception as ex:
                env.vars['last_exit_code'] = 1
                traceback.print_exc(file=sys.stderr)

        except KeyboardInterrupt:
            env.vars['last_exit_code'] = 130
Enters a shell for slcli.