import aiohttp fails on 3.14 when zstd is not installed #11603
Description
Describe the bug
import aiohttp fails on 3.14 when Cpython is built without zstd support. The CPython docs neglect to mention that compression.zstd is optional. For example:
import aiohttp
.tox/test/lib/python3.14/site-packages/aiohttp/__init__.py:6: in <module>
from .client import (
.tox/test/lib/python3.14/site-packages/aiohttp/client.py:40: in <module>
from . import hdrs, http, payload
.tox/test/lib/python3.14/site-packages/aiohttp/http.py:7: in <module>
from .http_parser import (
.tox/test/lib/python3.14/site-packages/aiohttp/http_parser.py:29: in <module>
from .compression_utils import (
.tox/test/lib/python3.14/site-packages/aiohttp/compression_utils.py:25: in <module>
import compression.zstd # noqa: I900
^^^^^^^^^^^^^^^^^^^^^^^
/opt/python/3.14/lib/python3.14/compression/zstd/__init__.py:29: in <module>
import _zstd
E ModuleNotFoundError: No module named '_zstd'
The compression.zstd import should guard against the ModuleNotFoundError/ImportError like it does for import zstandard on <=3.13.
To Reproduce
- Build CPython without zstd support.
- run
import aiohttp
Expected behavior
No ImportError.
Logs/tracebacks
See above.Python Version
3.14.0rc1aiohttp Version
3.13.0multidict Version
n/apropcache Version
n/ayarl Version
n/aOS
RHEL 8
Related component
Client, Server
Additional context
No response
Code of Conduct
- I agree to follow the aio-libs Code of Conduct