shell.py 文件源码

def enable_autocomplete_and_history(adir, env):
    try:
        import rlcompleter
        import atexit
        import readline
    except ImportError:
        pass
    else:
        readline.parse_and_bind("tab: complete")
        history_file = os.path.join(adir, '.pythonhistory')
        try:
            readline.read_history_file(history_file)
        except IOError:
            open(history_file, 'a').close()
        atexit.register(readline.write_history_file, history_file)
        readline.set_completer(rlcompleter.Completer(env).complete)