인프런 커뮤니티 질문&답변

 m1 mac에서 강의를 듣고있습니다.

env에서 channel_layer_redis 값을 파싱하는 것까지는 잘 따라왔는데

run_test_hello_channel.py 에서 해당 오류가 발생하네요

강사님 github에 있는 코드 그대로 복사해서 붙였는데도 오류가 나서 어디서부터 해결해야 할 지 모르겠습니다!도와주세요 ㅜㅜ

import asyncio

import os

import djangofrom channels.layers import get_channel_layer
os.environ["DJANGO_SETTINGS_MODULE"] = "mysite.settings"django.setup()

async def main(): channel_layer = get_channel_layer()
message_dict = {'content': 'world'}
await channel_layer.send('hello', message_dict) response_dict = await channel_layer.receive('hello') is_equal = message_dict == response_dict print("송신/수신 데이터가 같습니까?", is_equal)

asyncio.run(main())

터미널 결과는 다음과 같습니다.

(webchat) tk_mac@itaegyeong-ui-MacBookAir webchat % python run_test_hello_channel.py

Traceback (most recent call last):

  File "/Users/tk_mac/opt/anaconda3/envs/webchat/lib/python3.10/site-packages/channels/layers.py", line 65, in makebackend

    backend_class = import_string(self.configs[name]["BACKEND"])

  File "/Users/tk_mac/opt/anaconda3/envs/webchat/lib/python3.10/site-packages/django/utils/module_loading.py", line 30, in import_string

    return cached_import(module_path, class_name)

  File "/Users/tk_mac/opt/anaconda3/envs/webchat/lib/python3.10/site-packages/django/utils/module_loading.py", line 15, in cached_import

    module = import_module(module_path)

  File "/Users/tk_mac/opt/anaconda3/envs/webchat/lib/python3.10/importlib/__init__.py", line 126, in import_module

    return bootstrap.gcd_import(name[level:], package, level)

  File "<frozen importlib._bootstrap>", line 1050, in gcdimport

  File "<frozen importlib._bootstrap>", line 1027, in findand_load

  File "<frozen importlib._bootstrap>", line 992, in findand_load_unlocked

  File "<frozen importlib._bootstrap>", line 241, in callwith_frames_removed

  File "<frozen importlib._bootstrap>", line 1050, in gcdimport

  File "<frozen importlib._bootstrap>", line 1027, in findand_load

  File "<frozen importlib._bootstrap>", line 1004, in findand_load_unlocked

ModuleNotFoundError: No module named 'channel_redis'

During handling of the above exception, another exception occurred:

Traceback (most recent call last):

  File "/Users/tk_mac/github/webchat/run_test_hello_channel.py", line 22, in <module>

    asyncio.run(main())

  File "/Users/tk_mac/opt/anaconda3/envs/webchat/lib/python3.10/asyncio/runners.py", line 44, in run

    return loop.run_until_complete(main)

  File "/Users/tk_mac/opt/anaconda3/envs/webchat/lib/python3.10/asyncio/base_events.py", line 646, in run_until_complete

    return future.result()

  File "/Users/tk_mac/github/webchat/run_test_hello_channel.py", line 12, in main

    channel_layer = get_channel_layer()

  File "/Users/tk_mac/opt/anaconda3/envs/webchat/lib/python3.10/site-packages/channels/layers.py", line 357, in get_channel_layer

    return channel_layers[alias]

  File "/Users/tk_mac/opt/anaconda3/envs/webchat/lib/python3.10/site-packages/channels/layers.py", line 78, in getitem

    self.backends[key] = self.make_backend(key)

  File "/Users/tk_mac/opt/anaconda3/envs/webchat/lib/python3.10/site-packages/channels/layers.py", line 44, in make_backend

    return self._make_backend(name, config)

  File "/Users/tk_mac/opt/anaconda3/envs/webchat/lib/python3.10/site-packages/channels/layers.py", line 69, in makebackend

    raise InvalidChannelLayerError(

channels.exceptions.InvalidChannelLayerError: Cannot import BACKEND 'channel_redis.core.RedisChannelLayer' specified for default