python - 如何存储单击命令行参数/选项以供引用？

Question

新来点击这里，所以我仍在学习。如何将点击参数/选项存储在对象中以供以后在应用程序中引用？我想过只创建一个对象并从设置函数返回它，但它似乎不起作用。这是我所做的:

import click
import sys


class Cfg(object):
    component = ""
    command = ""
    obj = ""


my_cfg = Cfg()


@click.command()
@click.argument('component')
@click.argument("command")
@click.argument("obj")
def set_args(component, command, obj):
    cfg = Cfg()
    if component != "optdata":
        sys.stderr.write("Invalid option")
        sys.exit(1)
    else:
        cfg.component = component
        cfg.command = command
        cfg.obj = obj

    return cfg


if __name__ == "__main__":
    app_cfg = Cfg()
    app_cfg = set_args() # Never actually completes here. 
    print("Component = ", app_cfg.component, "Command = ", app_cfg.command, "Obj = ", app_cfg.obj)

core.py 中引发了某种异常，它只执行 sys.exit 并且不会引发任何类型的实际错误。

Answer 1

您的设计违背了“点击”的理念:您不应该将“解析选项”和“完成工作”视为两个单独的步骤:

import click

@click.command()
@click.argument("component", type=click.Choice(["optdata"]))
@click.argument("command")
@click.argument("obj")
def cli(component, command, obj):
    print("Component = ", component, "Command = ", command, "Obj = ", obj)
    # put your business logic here

if __name__ == "__main__":
    cli()

该模式是调用处理命令行选项的函数，然后让该函数调用任何其他功能。