Python 的第三方库，用于快速创建命令行。支持装饰器方式调用、多种参数类型、自动生成帮助信息等。示例代码如下： ```python import click @click.command() @click.option("--count", default=1, help="Number of greetings.") @click.option("--name", prompt="Your name", help="The person to greet.") def hello(count, name): """Simple program that greets NAME for a total of COUNT times.""" for _ in range(count): click.echo("Hello, %s!" % name) if __name__ == '__main__': hello() # 下面为运行效果 $ python hello.py --count=3 Your name: Click Hello, Click! Hello, Click! Hello, Click! ```