[英]How to solve ImportError: cannot import name splitfn in python
[英]How to solve the error ImportError: cannot import name 'AsyncWebsocketConsumer'?
我正在使用Python 3.6,Django 1.11和chennels = 2。 我正在關注本教程,並且在教程第2部分之前一直可以正常使用: http : //channels.readthedocs.io/en/stable/tutorial/part_2.html
當我轉到教程第3部分並相應地更改ChatConsumer文件時: http ://channels.readthedocs.io/en/stable/tutorial/part_3.html
我正面臨這個問題
ImportError:無法導入名稱“ 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
}))
要將使用者功能更改為異步性質,您需要從channels.generic.websocket
導入AsyncWebsocketConsumer
from channels.generic.websocket import AsyncWebsocketConsumer
更新至2.1版頻道,此錯誤已解決!
pip install channels==2.1
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