accesing loop attribute in non-async contexts-CodePudding

async def create_db_pool():
    database_url = ''
    client.pg_con = await asyncpg.create_pool(database_url, ssl="require")

so i have this function in my discord bot code but when i try to run this code using

client.loop.run_until_complete(create_db_pool())

i get the following error currently i am looking for a workaround for this or any way to solve it

AttributeError: loop attribute cannot be accessed in non-async contexts. Consider using either an asynchronous main function and passing it to asyncio.run or using asynchronous initialisation hooks such as Client.setup_hook

CodePudding user response：

Are you running your bot in a synchronous context? The code should look something like:

async def on_message(ctx): ...

Also please show some code. But I think learning the asyncio module will help. Anyway, try this:

import asyncio


async def create_db_pool() -> None: ... # Your code


loop = asyncio.get_event_loop()
loop.run_until_complete(function_async())
loop.close()

This will not run your function asynchronously, but it doesn't seem like you wish to do so. But it should actually successfully run the function.

CodePudding user response：

You must be using the master version of discord.py It recently introduced breaking changes with asyncio, with one of them being this. client.loop is no more accessible in a sync context. This gist explains what was the change and how to make a work around.

First way would be to introduce a setup_hook() function inside a commands.Bot subclass and use await create_db_pool() in there

class MyBot(commands.Bot):
     def __init__(self, **kwargs):
         super().__init__(**kwarg)
         self.pg_conn: = None

     async def create_db_pool(self): # making it a bound function in my example
         database_url = ''
         self.pg_con = await asyncpg.create_pool(database_url, ssl="require")

     async def setup_hook(self):
         await self.create_db_pool() # no need to use `loop.run_*` here, you are inside an async function

or you could also do this inside a main() function

async def main():
    await create_db_pool() # again, no need to run with AbstractLoopEvent if you can await
    await bot.start(TOKEN)

asyncio.run(main())