cannot unpack non-iterable int object in urllib3/util/wait.py", line 85,

[ping_chen_ibm_us]

Hello, I Ping Chen with IBM. We run into a "cannot unpack non-iterable int object" error in:

File "/usr/lib/python3.9/site-packages/urllib3/util/wait.py", line 85, in select_wait_for_socket.

That line is:

rready, wready, xready = _retry_on_intr(fn, timeout)

Looks like the _retry_on_intr returns an integer instead of 3 values
Here is the partial strack trace
---------------------------
nova-compute.log-2025071801:2025-07-17 10:06:54.456 1119 ERROR nova.compute.manager [instance: 442545f2-a49e-4488-9a60-1fa52d45cbee] File "/usr/lib/python3.9/site-packages/keystoneauth1/session.py", line 1022, in _send_request

nova-compute.log-2025071801:2025-07-17 10:06:54.456 1119 ERROR nova.compute.manager [instance: 442545f2-a49e-4488-9a60-1fa52d45cbee] resp = self.session.request(method, url, **kwargs)

nova-compute.log-2025071801:2025-07-17 10:06:54.456 1119 ERROR nova.compute.manager [instance: 442545f2-a49e-4488-9a60-1fa52d45cbee] File "/usr/lib/python3.9/site-packages/requests/sessions.py", line 589, in request

nova-compute.log-2025071801:2025-07-17 10:06:54.456 1119 ERROR nova.compute.manager [instance: 442545f2-a49e-4488-9a60-1fa52d45cbee] resp = self.send(prep, **send_kwargs)

nova-compute.log-2025071801:2025-07-17 10:06:54.456 1119 ERROR nova.compute.manager [instance: 442545f2-a49e-4488-9a60-1fa52d45cbee] File "/usr/lib/python3.9/site-packages/requests/sessions.py", line 703, in send

nova-compute.log-2025071801:2025-07-17 10:06:54.456 1119 ERROR nova.compute.manager [instance: 442545f2-a49e-4488-9a60-1fa52d45cbee] r = adapter.send(request, **kwargs)

nova-compute.log-2025071801:2025-07-17 10:06:54.456 1119 ERROR nova.compute.manager [instance: 442545f2-a49e-4488-9a60-1fa52d45cbee] File "/usr/lib/python3.9/site-packages/requests/adapters.py", line 486, in send

nova-compute.log-2025071801:2025-07-17 10:06:54.456 1119 ERROR nova.compute.manager [instance: 442545f2-a49e-4488-9a60-1fa52d45cbee] resp = conn.urlopen(

nova-compute.log-2025071801:2025-07-17 10:06:54.456 1119 ERROR nova.compute.manager [instance: 442545f2-a49e-4488-9a60-1fa52d45cbee] File "/usr/lib/python3.9/site-packages/urllib3/connectionpool.py", line 704, in urlopen

nova-compute.log-2025071801:2025-07-17 10:06:54.456 1119 ERROR nova.compute.manager [instance: 442545f2-a49e-4488-9a60-1fa52d45cbee] conn = self._get_conn(timeout=pool_timeout)

nova-compute.log-2025071801:2025-07-17 10:06:54.456 1119 ERROR nova.compute.manager [instance: 442545f2-a49e-4488-9a60-1fa52d45cbee] File "/usr/lib/python3.9/site-packages/urllib3/connectionpool.py", line 290, in _get_conn

nova-compute.log-2025071801:2025-07-17 10:06:54.456 1119 ERROR nova.compute.manager [instance: 442545f2-a49e-4488-9a60-1fa52d45cbee] if conn and is_connection_dropped(conn):

nova-compute.log-2025071801:2025-07-17 10:06:54.456 1119 ERROR nova.compute.manager [instance: 442545f2-a49e-4488-9a60-1fa52d45cbee] File "/usr/lib/python3.9/site-packages/urllib3/util/connection.py", line 28, in is_connection_dropped

nova-compute.log-2025071801:2025-07-17 10:06:54.456 1119 ERROR nova.compute.manager [instance: 442545f2-a49e-4488-9a60-1fa52d45cbee] return wait_for_read(sock, timeout=0.0)

nova-compute.log-2025071801:2025-07-17 10:06:54.456 1119 ERROR nova.compute.manager [instance: 442545f2-a49e-4488-9a60-1fa52d45cbee] File "/usr/lib/python3.9/site-packages/urllib3/util/wait.py", line 145, in wait_for_read

nova-compute.log-2025071801:2025-07-17 10:06:54.456 1119 ERROR nova.compute.manager [instance: 442545f2-a49e-4488-9a60-1fa52d45cbee] return wait_for_socket(sock, read=True, timeout=timeout)

nova-compute.log-2025071801:2025-07-17 10:06:54.456 1119 ERROR nova.compute.manager [instance: 442545f2-a49e-4488-9a60-1fa52d45cbee] File "/usr/lib/python3.9/site-packages/urllib3/util/wait.py", line 85, in select_wait_for_socket

nova-compute.log-2025071801:2025-07-17 10:06:54.456 1119 ERROR nova.compute.manager [instance: 442545f2-a49e-4488-9a60-1fa52d45cbee] rready, wready, xready = _retry_on_intr(fn, timeout)

nova-compute.log-2025071801:2025-07-17 10:06:54.456 1119 ERROR nova.compute.manager [instance: 442545f2-a49e-4488-9a60-1fa52d45cbee] TypeError: cannot unpack non-iterable int object
--------------------------------
This is related python version info:
--------------------------------
[ibmadmin@ifra05-s9-26-nl-b09 ~]$ python3 --version

Python 3.9.16

[ibmadmin@ifra05-s9-26-nl-b09 ~]$ pip3 show urllib3

Name: urllib3

Version: 1.26.18

Summary: HTTP library with thread-safe connection pooling, file post, and more.

Home-page: https://urllib3.readthedocs.io/

Author: Andrey Petrov

Author-email: [email protected]

License: MIT

Location: /usr/lib/python3.9/site-packages

Requires:

Required-by: requests, etcd3gw
---------------------------

Is this a known issue? If yes, if there is a fix for it? Is there a way to avoid or work around this issue?

Thanks,

ping

[deanhystad]

Update urllib3. Current version is 2.5 which is compatible with python 3.9.

https://pypi.org/project/urllib3/
https://github.com/urllib3/urllib3

[ping_chen_ibm_us]

Update urllib3. Current version is 2.5 which is compatible with python 3.9.

https://pypi.org/project/urllib3/
https://github.com/urllib3/urllib3

Thank you for your suggestion