httpx\_client.py", line 1991, in __del__ AttributeError: 'NoneType' object has no attribute 'OPENED'

The starting point for issues should usually be a discussion...

https://github.com/encode/httpx/discussions

Possible bugs may be raised as a "Potential Issue" discussion, feature requests may be raised as an "Ideas" discussion. We can then determine if the discussion needs to be escalated into an "Issue" or not.

This will help us ensure that the "Issues" list properly reflects ongoing or needed work on the project.

Initially raised as discussion #...

Sender Runtime Finished ...
[<Response [200 OK]>, <Response [200 OK]>, <Response [200 OK]>, <Response [200 OK]>]
Exception ignored in: <function AsyncClient.del at 0x000001C2BCC04A60>
Traceback (most recent call last):
File "C:\ANACONNA\lib\site-packages\httpx_client.py", line 1991, in del
AttributeError: 'NoneType' object has no attribute 'OPENED'

__ If I Delete The __del__ function in _client.py , my code can work without error, but if not ,the error above will just happend..
And my function can get The coroutine data return , but I still don know why this error happend?
Is Python garbage Recycle effect this ? __

And The __del__ code is

    def __del__(self) -> None:
        # We use 'getattr' here, to manage the case where '__del__()' is called
        # on a partially initiallized instance that raised an exception during
        # the call to '__init__()'.
        if getattr(self, "_state", None) == ClientState.OPENED:  # noqa: B009
            # Unlike the sync case, we cannot silently close the client when
            # it is garbage collected, because `.aclose()` is an async operation,
            # but `__del__` is not.
            #
            # For this reason we require explicit close management for
            # `AsyncClient`, and issue a warning on unclosed clients.
            #
            # The context managed style is usually preferable, because it neatly
            # ensures proper resource cleanup:
            #
            #     async with httpx.AsyncClient() as client:
            #         ...
            #
            # However, an explicit call to `aclose()` is also sufficient:
            #
            #    client = httpx.AsyncClient()
            #    try:
            #        ...
            #    finally:
            #        await client.aclose()
            warnings.warn(
                f"Unclosed {self!r}. "
                "See https://www.python-httpx.org/async/#opening-and-closing-clients "
                "for details."
            )

See also #1951

I'm not able to reproduce this, and it's very odd to me.
What's the simplest possible case you can come up with that reproduces this issue?

thank you for you reply,here is the code can reproduce this issue

run.py

import asyncio
import httpx

class run():
    def __init__(self, URL) -> None:
        print("init_ run class")
        self.ret = "client get return"
        self.URL = URL
        self.Client = self.return_client()
        self.Return = 'Return'

    def go(self):
        asyncio.run(self.run_client())
        return self.ret

    def return_client(self):
        Client = httpx.AsyncClient()
        return Client

    async def send(self):
        self.Return = await self.Client.get(self.URL)

    async def run_client(self):
        Task = asyncio.create_task(self.send())
        await Task
        await self.Client.aclose()

test.py

import run
Instance = run.run('https://www.bing.com')
print(Instance.go())

then run the test.py, can reproduce the error

init_ run class
client get return
Exception ignored in: <function AsyncClient.__del__ at 0x0000021E388B09D0>
Traceback (most recent call last):
  File "C:\ANACONNA\lib\site-packages\httpx\_client.py", line 1991, in __del__
AttributeError: 'NoneType' object has no attribute 'OPENED'

By the way ,if you run

Instance = run('https://www.bing.com')
print(Instance.go())

after run.py ,the error will not be raise.

init_ run class
client get return

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lovelydinosaur commented on Jan 11, 2022

kusime commented on Jan 12, 2022

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httpx\_client.py", line 1991, in del AttributeError: 'NoneType' object has no attribute 'OPENED' #2024