小知识点1

通过读取配置文件执行相应的方法

文件路径

# settings.py 模块是用来配置相应的路径

setting_list = [
    'test1.message.email.Email',
    'test1.message.message.Message'
]

#run.py 模块是调用send()方法

from test1.message import send

def fun(msg):
    send(msg)

msg = "hello world"
fun(msg)

# __init__.py 模块加载send（）方法时，从settings中找到配置文件
#加载模块，创建对象，执行配置文件中所对应的方法

import importlib
from settings import setting_list


def send(msg):
    for path in setting_list:
        m,c = path.rsplit('.',1)
        md = importlib.import_module(m)
        cls = getattr(md,c)()
        cls.send(msg)

# email.py 执行email发送

class Email():
    def send(self,msg):
        print('email'+msg)