我正在追踪this tutorial，以使用Django来尝试Channels。我正在使用Windows 10 HOME，Django 2.1.4和Python 3.7.1
本教程的目标是构建一个聊天应用程序。
下载chromeDriver并将其添加到PATH之后，我在提示符下运行以下命令：
py manage.py test chat.tests
哪个返回此错误消息：
EETraceback (most recent call last):
File "<string>", line 1, in <module>
File "c:\users\kevin\appdata\local\programs\python\python37-32\Lib\multiprocessing\spawn.py", line 105, in spawn_main
exitcode = _main(fd)
File "c:\users\kevin\appdata\local\programs\python\python37-32\Lib\multiprocessing\spawn.py", line 115, in _main
self = reduction.pickle.load(from_parent)
EOFError: Ran out of input
Traceback (most recent call last):
File "<string>", line 1, in <module>
File "c:\users\kevin\appdata\local\programs\python\python37-32\Lib\multiprocessing\spawn.py", line 105, in spawn_main
exitcode = _main(fd)
File "c:\users\kevin\appdata\local\programs\python\python37-32\Lib\multiprocessing\spawn.py", line 115, in _main
self = reduction.pickle.load(from_parent)
EOFError: Ran out of input
======================================================================
ERROR: test_when_chat_message_posted_then_not_seen_by_anyone_in_different_room (chat.tests.ChatTests)
----------------------------------------------------------------------
Traceback (most recent call last):
File "C:\Users\kevin\Envs\myproject\lib\site-packages\django\test\testcases.py", line 202, in __call__
self._pre_setup()
File "C:\Users\kevin\Envs\myproject\lib\site-packages\channels\testing\live.py", line 52, in _pre_setup
self._server_process.start()
File "c:\users\kevin\appdata\local\programs\python\python37-32\Lib\multiprocessing\process.py", line 112, in start
self._popen = self._Popen(self)
File "c:\users\kevin\appdata\local\programs\python\python37-32\Lib\multiprocessing\context.py", line 223, in _Popen
return _default_context.get_context().Process._Popen(process_obj)
File "c:\users\kevin\appdata\local\programs\python\python37-32\Lib\multiprocessing\context.py", line 322, in _Popen
return Popen(process_obj)
File "c:\users\kevin\appdata\local\programs\python\python37-32\Lib\multiprocessing\popen_spawn_win32.py", line 65, in __init__
reduction.dump(process_obj, to_child)
File "c:\users\kevin\appdata\local\programs\python\python37-32\Lib\multiprocessing\reduction.py", line 61, in dump
ForkingPickler(file, protocol).dump(obj)
AttributeError: Can't pickle local object 'DaphneProcess.__init__.<locals>.<lambda>'
======================================================================
ERROR: test_when_chat_message_posted_then_seen_by_everyone_in_same_room (chat.tests.ChatTests)
----------------------------------------------------------------------
Traceback (most recent call last):
File "C:\Users\kevin\Envs\myproject\lib\site-packages\django\test\testcases.py", line 202, in __call__
self._pre_setup()
File "C:\Users\kevin\Envs\myproject\lib\site-packages\channels\testing\live.py", line 52, in _pre_setup
self._server_process.start()
File "c:\users\kevin\appdata\local\programs\python\python37-32\Lib\multiprocessing\process.py", line 112, in start
self._popen = self._Popen(self)
File "c:\users\kevin\appdata\local\programs\python\python37-32\Lib\multiprocessing\context.py", line 223, in _Popen
return _default_context.get_context().Process._Popen(process_obj)
File "c:\users\kevin\appdata\local\programs\python\python37-32\Lib\multiprocessing\context.py", line 322, in _Popen
return Popen(process_obj)
File "c:\users\kevin\appdata\local\programs\python\python37-32\Lib\multiprocessing\popen_spawn_win32.py", line 65, in __init__
reduction.dump(process_obj, to_child)
File "c:\users\kevin\appdata\local\programs\python\python37-32\Lib\multiprocessing\reduction.py", line 61, in dump
ForkingPickler(file, protocol).dump(obj)
AttributeError: Can't pickle local object 'DaphneProcess.__init__.<locals>.<lambda>'
----------------------------------------------------------------------
Ran 0 tests in 4.689s
FAILED (errors=2)
Destroying test database for alias 'default'...
同一个问题（https://stackoverflow.com/questions/50016048....）提供了一个解决方案，但对我而言不起作用。
当我修改文件 reduction.py 以将进口泡菜替换为进口莳萝作为泡菜时，我收到此新消息错误：
DevTools listening on ws://127.0.0.1:25037/devtools/browser/b4c722e4-c7f2-49fb-939b-7372e9688eea
C:\Users\kevin\Envs\myproject\lib\site-packages\daphne\server.py:13: UserWarning: Something has already installed a non-asyncio Twisted reactor. Attempting to uninstall it; you can fix this warning by importing daphne.server early in your codebase or finding the package that imports Twisted and importing it later on.
UserWarning,
Traceback (most recent call last):
File "<string>", line 1, in <module>
File "c:\users\kevin\appdata\local\programs\python\python37-32\Lib\multiprocessing\spawn.py", line 105, in spawn_main
exitcode = _main(fd)
File "c:\users\kevin\appdata\local\programs\python\python37-32\Lib\multiprocessing\spawn.py", line 115, in _main
self = reduction.pickle.load(from_parent)
File "C:\Users\kevin\Envs\myproject\lib\site-packages\dill\_dill.py", line 304, in load
obj = pik.load()
File "C:\Users\kevin\Envs\myproject\lib\site-packages\dill\_dill.py", line 465, in find_class
return StockUnpickler.find_class(self, module, name)
File "C:\Users\kevin\Envs\myproject\lib\site-packages\channels\auth.py", line 12, in <module>
from django.contrib.auth.models import AnonymousUser
File "C:\Users\kevin\Envs\myproject\lib\site-packages\django\contrib\auth\models.py", line 2, in <module>
from django.contrib.auth.base_user import AbstractBaseUser, BaseUserManager
File "C:\Users\kevin\Envs\myproject\lib\site-packages\django\contrib\auth\base_user.py", line 47, in <module>
class AbstractBaseUser(models.Model):
File "C:\Users\kevin\Envs\myproject\lib\site-packages\django\db\models\base.py", line 87, in __new__
app_config = apps.get_containing_app_config(module)
File "C:\Users\kevin\Envs\myproject\lib\site-packages\django\apps\registry.py", line 249, in get_containing_app_config
self.check_apps_ready()
File "C:\Users\kevin\Envs\myproject\lib\site-packages\django\apps\registry.py", line 132, in check_apps_ready
raise AppRegistryNotReady("Apps aren't loaded yet.")
django.core.exceptions.AppRegistryNotReady: Apps aren't loaded yet.
请，有人可以帮我忙吗？