Я начал использовать канал для своего проекта. Я следую этому уроку Raspberry PI и Django Channels для разработки моего проекта.
Но после запуска сервера python3 manage.py runsever, дай мне эту ошибку.
root@raspberrypi:/home/pi/sensor# python3 manage.py runserver 0:8000
:0: UserWarning: You do not have a working installation of the service_identity module: 'cannot import name 'opentype''. Please install it from <https://pypi.python.org/pypi/service_identity> and make sure all of its dependencies are satisfied. Without the service_identity module, Twisted can perform only rudimentary TLS client hostname verification. Many valid certificate/hostname mappings may be rejected.
:0: UserWarning: You do not have a working installation of the service_identity module: 'cannot import name 'opentype''. Please install it from <https://pypi.python.org/pypi/service_identity> and make sure all of its dependencies are satisfied. Without the service_identity module, Twisted can perform only rudimentary TLS client hostname verification. Many valid certificate/hostname mappings may be rejected.
Watching for file changes with StatReloader
Exception in thread django-main-thread:
Traceback (most recent call last):
File "/usr/lib/python3.5/threading.py", line 914, in _bootstrap_inner
self.run()
File "/usr/lib/python3.5/threading.py", line 862, in run
self._target(*self._args, **self._kwargs)
File "/usr/local/lib/python3.5/dist-packages/django/utils/autoreload.py", line 54, in wrapper
fn(*args, **kwargs)
File "/usr/local/lib/python3.5/dist-packages/django/core/management/commands/runserver.py", line 109, in inner_run
autoreload.raise_last_exception()
File "/usr/local/lib/python3.5/dist-packages/django/utils/autoreload.py", line 77, in raise_last_exception
raise _exception[0](_exception[1]).with_traceback(_exception[2])
File "/usr/local/lib/python3.5/dist-packages/django/utils/autoreload.py", line 54, in wrapper
fn(*args, **kwargs)
File "/usr/local/lib/python3.5/dist-packages/django/__init__.py", line 24, in setup
apps.populate(settings.INSTALLED_APPS)
File "/usr/local/lib/python3.5/dist-packages/django/apps/registry.py", line 122, in populate
app_config.ready()
File "/usr/local/lib/python3.5/dist-packages/channels/apps.py", line 20, in ready
monkeypatch_django()
File "/usr/local/lib/python3.5/dist-packages/channels/hacks.py", line 10, in monkeypatch_django
from .management.commands.runserver import Command as RunserverCommand
File "/usr/local/lib/python3.5/dist-packages/channels/management/commands/runserver.py", line 11, in <module>
from channels.routing import get_default_application
File "/usr/local/lib/python3.5/dist-packages/channels/routing.py", line 9, in <module>
from channels.http import AsgiHandler
File "/usr/local/lib/python3.5/dist-packages/channels/http.py", line 17, in <module>
from asgiref.sync import async_to_sync, sync_to_async
ImportError: No module named 'asgiref.sync'
Что я делаю?
питон: 3.5.3
Джанго: 2,21
канал: 2.2.0
asgiref: 3.1.2