Import module order issue about aiohttp-devtools HOT 5 CLOSED

libs
  - l1
    - `__init__.py`
    - app.py
app.py

from aiohttp import web

import sys
sys.path.insert(0, 'libs/l1')

class Main:
    def __init__(self):
        self.app = web.Application()
        self.app.router.add_get('/', self.handle_request)

    async def handle_request(self, request):
        return web.Response(text="testing", content_type='text/html')

def create_app():
    page = Main()
    return page.app

print("I am app")

[15:52:30] Root path not specified, using current working directory
[15:52:30] app_path is a file, returning it directly
[15:52:30] config loaded:
Config:
  py_file: PosixPath('*********/test_devtools/app.py')
  static_path: None
  static_url: '/static/'
  livereload: False
  shutdown_by_url: False
  path_prefix: '/_devtools'
  app_factory_name: None
  host: 'localhost'
  main_port: 8080
  aux_port: 8086
[15:52:30] successfully loaded "app" from "*********/test_devtools"
[15:52:30] found default attribute "create_app" in module "<module 'app' from '*********/test_devtools/app.py'>"
[15:52:30] Starting aux server at http://localhost:8086 ◆
[15:52:30] Starting dev server at http://localhost:8080 ●
======== Running on http://0.0.0.0:8086 ========
(Press CTRL+C to quit)
I am app
[15:52:30] successfully loaded "app" from "*********/test_devtools"
Process Process-1:
Traceback (most recent call last):
  File "*********/test_devtools/venv/lib/python3.11/site-packages/aiohttp_devtools/runserver/config.py", line 160, in import_app_factory
    attr = getattr(module, self.app_factory_name)
           ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
AttributeError: module 'app' has no attribute 'create_app'

During handling of the above exception, another exception occurred:

Traceback (most recent call last):
  File "/usr/lib/python3.11/multiprocessing/process.py", line 314, in _bootstrap
    self.run()
  File "/usr/lib/python3.11/multiprocessing/process.py", line 108, in run
    self._target(*self._args, **self._kwargs)
  File "*********/test_devtools/venv/lib/python3.11/site-packages/aiohttp_devtools/runserver/serve.py", line 168, in serve_main_app
    app_factory = config.import_app_factory()
                  ^^^^^^^^^^^^^^^^^^^^^^^^^^^
  File "*********/test_devtools/venv/lib/python3.11/site-packages/aiohttp_devtools/runserver/config.py", line 162, in import_app_factory
    raise AdevConfigError("Module '{}' does not define a '{}' attribute/class".format(
aiohttp_devtools.exceptions.AiohttpDevConfigError: Module 'app.py' does not define a 'create_app' attribute/class

# test_runserver_main.py

from multiprocessing import set_start_method
from aiohttp_devtools.runserver.watch import AppTask

@forked
def test_start_runserver_with_multi_app_modules(tmpworkdir, event_loop, capfd):
    mktree(tmpworkdir, {
        'app.py': f"""\
from aiohttp import web
import sys
sys.path.insert(0, '{tmpworkdir}/libs/l1')

async def hello(request):
    return web.Response(text='<h1>hello world</h1>', content_type='text/html')

async def create_app():
    a = web.Application()
    a.router.add_get('/', hello)
    return a
""",
        "libs": {
            "l1": {
                "__init__.py": "",
                "app.py": "print('wrong_import')"
            }
        }
    })

    set_start_method('spawn')
    config = Config(app_path="app.py", root_path=tmpworkdir, main_port=0, app_factory_name="create_app")
    config.import_app_factory()
    app_task = AppTask(config)
    
    app_task._start_dev_server()
    app_task._process.join(2)

    captured = capfd.readouterr()
    assert captured.out == "wrong_import\n"