python的import问题,如何在Outter_service.py中可以调用Demo目录下的app.py,
class InnerService:

    def __init__(self):
        print("inner service_1")
from servcie.inner_service import InnerService


class App:

    def __init__(self):
        print("inner app")
        InnerService()


if __name__ == '__main__':
    App()
class InnerService:

    def __init__(self):
        print("inner service_1")
from service_1.outter_service import OutterService
from Demo.app import App as DemoApp


class Main:

    def __init__(self):
        print("app")
        DemoApp()


if __name__ == '__main__':
    OutterService()
from Demo.app import App


class OutterService:

    def __init__(self):
        print("outter service_1")
        App()
project
  |--Demo
     |---service
          inner_service.py
     |---app.py
  |--service-1
       outter-service.py
  main.py

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