Asyncpraw 基本 reddit API 示例在执行后立即抛出错误

Question

我刚刚开始尝试使用 AsyncPraw Reddit API 包装器创建一个机器人。我复制粘贴了文档中的代码示例，但我无法在没有警告的情况下运行它。

尝试执行此代码：

import asyncpraw
import asyncio
import auth
from time import sleep
async def amain():
    reddit = asyncpraw.Reddit(
        client_id=auth.CLIENT_ID,
        client_secret=auth.CLIENT_SECRET,
        user_agent="Example bot",
        password=auth.PASSWORD,
        username=auth.USERNAME,
        ratelimit_seconds=700
    )

    print(reddit.read_only)
    # Output: True
    # continued from code above

    subreddit = await reddit.subreddit("askreddit")
    async for submission in subreddit.top(limit=10):
        print(submission.title)


asyncio.run(amain())

一切正常，提交标题被打印，但随后，这种情况发生了：

> Unclosed client session client_session: <aiohttp.client.ClientSession
> object at 0x000001D53CA8D6C0> Unclosed connector connections:
> ['[(<aiohttp.client_proto.ResponseHandler object at
> 0x000001D53C246FE0>, 116575.906)]'] connector:
> <aiohttp.connector.TCPConnector object at 0x000001D53CA8D7E0> Fatal
> error on SSL transport protocol: <asyncio.sslproto.SSLProtocol object
> at 0x000001D53CA8EB30> transport: <_ProactorSocketTransport fd=-1
> read=<_OverlappedFuture cancelled>>

...

> RuntimeError: Event loop is closed

尝试通过将

asyncio.run(amain())

替换为：

来修复

loop = asyncio.get_event_loop()
loop.run_until_complete(amain())

这修复了

RuntimeError: Event loop is closed

，但是

Unclosed client session client_session: <aiohttp.client.ClientSession

。其后的所有内容都保留下来。

最重要的是，现在我得到了

DeprecationWarning：当前没有事件循环 循环 = asyncio.get_event_loop()

Answer 1

我自己找到了答案。我只需要添加

asyncio.set_event_loop_policy(asyncio.WindowsSelectorEventLoopPolicy())

之前

asyncio.run(amain())

它将正常工作，不会出现错误或警告。