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ee5325b9f1
This PR enables Python 3.14 in all the different tests - Basic tests (Native Python tests), Bazel tests and Distrib tests to build Python 3.14 artifacts. In addition, it also updates all the public facing METADATA versions.
## Distribtests
Required pre-requisite changes to enable 3.14 artifacts are covered in #40289 .
## Bazel tests
Enabling Python 3.14 required updating the rules_python version to a more recent version that supports 3.14. This was done in #40602
## Basic tests
The following errors were caught by the Basic tests when running via Python 3.14 and resolved in this PR:
### 1) No running event loop for AsyncIO when run outside an async function
```
Traceback (most recent call last):
File "src/python/grpcio/grpc/_cython/_cygrpc/aio/common.pyx.pxi", line 184, in grpc._cython.cygrpc.get_working_loop
RuntimeError: no running event loop
```
This was caught by the `tests_aio.unit.outside_init_test.TestOutsideInit` and `tests_aio.unit.init_test.TestInit` tests, and was also previously reported in #39507 with the root cause.
Following some investigation, the fix is being worked on by @sergiitk in PR #40293. In order to parallelize the fix and this PR, these 2 tests are currently being skipped for Python 3.14 and above.
### 2) Pickling error from the `multiprocessing` library
```
_pickle.PicklingError: Can't pickle <function _test_well_known_types at 0x7f3937eee610>: it's not the same object as tests.unit._dynamic_stubs_test._test_well_known_types
when serializing dict item '_target'
when serializing multiprocessing.context.Process state
when serializing multiprocessing.context.Process object
```
This was caught by the `tests.unit._dynamic_stubs_test.DynamicStubTest` which runs test cases in a subprocess using the `multiprocessing` library.
Error root cause:
- The default start method of multiprocessing in linux has changed to `forkserver` instead of `fork` from Python 3.14.
- `forkserver` has a few extra restrictions for picklability as compared to `fork` (Ref: [Python Docs](https://docs.python.org/3.14/library/multiprocessing.html#the-spawn-and-forkserver-start-methods))
- All the [test case functions](0243842d5d/src/python/grpcio_tests/tests/unit/_dynamic_stubs_test.py (L115)) in the DynamicStubTest that are provided as `target` to the `multiprocessing.Process` use decorators. This causes problems when pickling them.
Hence to resolve this, we manually set the 'start method' of `multiprocessing` to use the `fork` start method.
Closes #40403
PiperOrigin-RevId: 804290760
21 lines
811 B
Python
21 lines
811 B
Python
# Copyright 2024 gRPC authors.
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#
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# Licensed under the Apache License, Version 2.0 (the "License");
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# you may not use this file except in compliance with the License.
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# You may obtain a copy of the License at
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#
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# http://www.apache.org/licenses/LICENSE-2.0
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#
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# Unless required by applicable law or agreed to in writing, software
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# distributed under the License is distributed on an "AS IS" BASIS,
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# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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# See the License for the specific language governing permissions and
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# limitations under the License.
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# AUTO-GENERATED FROM `$REPO_ROOT/templates/tools/distrib/python/grpcio_tools/python_version.py.template`!!!
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SUPPORTED_PYTHON_VERSIONS = ["3.9","3.10","3.11","3.12","3.13","3.14"]
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MIN_PYTHON_VERSION = 3.9
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MAX_PYTHON_VERSION = 3.14
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