async_to_sync()¶ async_to_sync(async_function,force_new_loop=False)¶ 使用异步函数并返回包装它的同步函数。可用作直接包装器或装饰器: fromasgiref.syncimportasync_to_syncasyncdefget_data(...):...sync_get_data=async_to_sync(get_data)@async_to_syncasyncdefget_other_data(...):... ...
key=KEY。调用消费者后,Django Channels需要执行一个非常简单的DB查询来检查密钥是否存在: class TestConsumer(AsyncJsonWebsocketConsumer): async def websocket_connect(self, event): ... key_query = await database_sync_to_async(keys.objects.get(key=key)) ... 但此代码的问题是,它将给出以下错误: Yo...
Django模板在html文件中，default 为变量提供一个默认值，如果views传的变量布尔值为false，则使用指定的...
问在django和discord.py中使用sync_to_async后仍然会出现SynchronousOnlyOperation错误EN前些时间在做一个...
@database_sync_to_async def verify_user(self, scope, headers): close_old_connections() query_string = scope['query_string'].decode() x_real_ip = self.get_real_ip(headers) token = parse_qs(query_string).get('token', [''])[0] ...
在访问登陆接口时,抛出异常—— sync_to_async for converting generators to async generators 解决 项目环境的一个依赖包 asgiref 版本不一致。原项目的 asgiref 为 3.3.1,(项目在四个月之前开始开发,当时的asgiref==3.3.1),而现在从git拉下项目,asgiref 为 3.3.2, ...
async def disconnect(self, code): """断开连接""" await self.channel_layer.group_discard( 'notifications', self.channel_name ) channels将同步的MySQL转换为异步的: 1 2 3 4 5 6 7 8 # ORM语句同步变异步,方式一 from channels.db import database_sync_to_async user = await database_sync_to...
如果你想从一个异步线程中调用只用于同步的代码,那么就创建一个同步线程并在该线程中调用它。你可以通过asgiref.sync.sync_to_async()来实现。 URL 解析器异常¶ URL 解析器异常定义在django.urls中。 Resolver404¶ exceptionResolver404¶ resolve()如果传递给resolve()的路径没有映射到视图,那么Resolver404异...
I had upgraded to channels 2.4.0 during debugging, but it seems I have a different error for this. @pytest.mark.django_db @pytest.mark.asyncio async def test_strategy_map_ws(self): myModel = database_sync_to_async(MyModel.objects.create)(...) ...
By default, sync_to_async will run all synchronous code in the program in the same thread for safety reasons; you can disable this for more performance with @sync_to_async(thread_sensitive=False), but make sure that your code does not rely on anything bound to threads (like database ...