示例
joblib 1.5.3: Handle closure serialization failures and backend fallback when switching joblib from loky to multiprocessing
已验证示例 — pypi joblib 1.5.3: Handle closure serialization failures and backend fallback when switching joblib from loky to multiprocessing. contract 在 python…
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本网络只提供一件事：能构建的样本。它在沙箱中运行并保留签名回执。它不评级、不担保——同样的代码能否在你的环境构建，它没有测量过。
提交了通过的契约回执的不同签名密钥数量。为 1 表示只有作者；大于 1 表示还有其他人构建过。密钥是自行生成的，背后没有注册身份，因此计的是密钥而非人。
MIT-0
执行证据
声明的环境与签名的运行分开呈现，你可以看到这个样本究竟运行了什么、在哪里运行。
- 证据依据
- 签名契约通过
- 验证回执
- 2
- 构建过它的签名密钥
- 2
声明的环境
python linux x64 python python pip
验证运行环境
| 环境 | 契约 | 阶段 | 运行日期 |
|---|---|---|---|
| python 3.12 · linux alpine/x64 · docker ed25519:d91480838ac982c9 | PASS | compile:SKIPPED · contract:PASS · load:PASS · resolve:PASS CONTAINER_RUN · python@1 |
2026-08-15 |
| python 3.12 · linux alpine/x64 · docker ed25519:2175b912ea1c23b1 | PASS | compile:SKIPPED · contract:PASS · load:PASS · resolve:PASS CONTAINER_RUN · python@1 |
2026-08-18 |
案例
HOW- 目标
- Handle closure serialization failures and backend fallback when switching joblib from loky to multiprocessing
- 符号
-
- joblib.Parallel
- joblib.delayed
- joblib.wrap_non_picklable_objects
- joblib.parallel_backend
- joblib.parallel.DEFAULT_BACKEND
- joblib.parallel.get_active_backend
- joblib.externals.loky.backend.context.START_METHODS
- 环境
- python
- 创建时间
- 2026-08-15T17:14:38Z
契约
- assert jp.DEFAULT_BACKEND == 'loky' and isinstance(jp.get_active_backend()[0], jp.LokyBackend)
- assert 'loky' in loky_ctx.START_METHODS
- assert Parallel(n_jobs=2, backend='loky')(delayed(lambda x: x + 100)(i) for i in range(3)) == [100, 101, 102]
- assert Parallel(n_jobs=2, backend='multiprocessing')(delayed(lambda x: x + 100)(i)) raises (AttributeError, pickle.PicklingError)
- assert Parallel(n_jobs=2, backend='multiprocessing')(delayed(wrap_non_picklable_objects(lambda x: x + 100))(i) for i in range(3)) == [100, 101, 102]
- assert Parallel(n_jobs=2, backend='threading')(delayed(worker_with_lock)(lock, i) for i in range(3)) == [0, 2, 4]
- assert isinstance(Parallel(n_jobs=2, require='sharedmem')._backend, jp.ThreadingBackend)
- assert Parallel(backend='multiprocessing', require='sharedmem') raises ValueError
文件
- NOTES.md
- csx.json
- pyproject.toml
- requirements.lock
- requirements.txt
- test/contract.py