将bash自动完成添加到python脚本

Question

我在脚本中使用readline来提供输入历史记录和基于历史记录的自动完成功能。

现在我希望它也完成bash命令。例如。建议$PATH中的可执行文件，列出给定目录中的项目。

我必须手动实现吗？

histfile = os.path.join(os.path.expanduser("~"), ".python_history")
with open(histfile) as f:
    for line in f:
        for item in line.strip().split():
            commands.append(item)

def completer(text, state):
options = [i for i in commands if i.startswith(text)]
if state < len(options):
    return options[state]
else:
    return None


readline.parse_and_bind("tab: complete")
readline.set_completer(completer)

try:
    readline.read_history_file(histfile)
    # default history len is -1 (infinite), which may grow unruly
    readline.set_history_length(1000)
except FileNotFoundError:
    pass

atexit.register(readline.write_history_file, histfile)