How to solve the error ImportError: cannot import name 'AsyncWebsocketConsumer'?

Question

我正在使用 Python 3.6、Django 1.11 和 chennels=2。我正在学习本教程，它在教程第 2 部分之前工作正常：http://channels.readthedocs.io/en/stable/tutorial/part_2.html

当我转到教程第 3 部分并相应地更改 ChatConsumer 文件时：http://channels.readthedocs.io/en/stable/tutorial/part_3.html

我正面临这个问题

ImportError: cannot import name 'AsyncWebsocketConsumer'

Consumer.py:

from channels.generic.websocket import AsyncWebsocketConsumer
import json

class ChatConsumer(AsyncWebsocketConsumer):
    async def connect(self):
        self.room_name = self.scope['url_route']['kwargs']['room_name']
        self.room_group_name = 'chat_%s' % self.room_name

        # Join room group
        await self.channel_layer.group_add(
            self.room_group_name,
            self.channel_name
        )

        await self.accept()

    async def disconnect(self, close_code):
        # Leave room group
        await self.channel_layer.group_discard(
            self.room_group_name,
            self.channel_name
        )

    # Receive message from WebSocket
    async def receive(self, text_data):
        text_data_json = json.loads(text_data)
        message = text_data_json['message']

        # Send message to room group
        await self.channel_layer.group_send(
            self.room_group_name,
            {
                'type': 'chat_message',
                'message': message
            }
        )

    # Receive message from room group
    async def chat_message(self, event):
        message = event['message']

        # Send message to WebSocket
        await self.send(text_data=json.dumps({
            'message': message
        }))

错误：任何一种将不胜感激！

Answer 1

要将您的消费者函数更改为异步性质，您需要从 channels.generic.websocket

导入 AsyncWebsocketConsumer

from channels.generic.websocket import AsyncWebsocketConsumer

Answer 2

已更新到频道版本 2.1，它解决了这个错误！

pip install channels==2.1

How to solve the error ImportError: cannot import name 'AsyncWebsocketConsumer'?

How to solve the error ImportError: cannot import name 'AsyncWebsocketConsumer'?

python

django

chat

django-channels