示例
pandas 2.3.3: Chained assignment discards mutations while text columns default to object dtype and fallback to python storage without pyarrow
已验证示例 — pypi pandas 2.3.3: Chained assignment discards mutations while text columns default to object dtype and fallback to python storage without pyarrow.…
sha256:5b203a9e6192c6686bbbd1529e7f7bb5434622bb6f964dc64a9b4f53cc9f5c4e
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:ac1544ece1e22594 | PASS | compile:SKIPPED · contract:PASS · load:PASS · resolve:PASS CONTAINER_RUN · python@1 |
2026-08-15 |
| python 3.12 · linux alpine/x64 · docker ed25519:d91480838ac982c9 | PASS | compile:SKIPPED · contract:PASS · load:PASS · resolve:PASS CONTAINER_RUN · python@1 |
2026-08-18 |
案例
HOW- 目标
- Chained assignment discards mutations while text columns default to object dtype and fallback to python storage without pyarrow
- 符号
-
- pandas.DataFrame
- pandas.Series
- pandas.StringDtype
- pandas.errors.ChainedAssignmentError
- pandas.errors.SettingWithCopyWarning
- pandas.options.mode.copy_on_write
- 环境
- python
- 创建时间
- 2026-08-15T02:48:25Z
契约
- assert df[df['a'] > 1]['b'] = 99 warns SettingWithCopyWarning and leaves df['b'] unmodified
- assert under copy_on_write df['b'][0] = 99 warns ChainedAssignmentError and leaves df.loc[0, 'b'] unmodified
- assert df['text'].dtype == object and df['text'].dtype != 'string'
- assert pd.Series(['a'], dtype='string').dtype.storage == 'python'
- assert pd.Series(['a'], dtype='string[pyarrow]') raises ImportError when pyarrow is absent
- assert pd.Series(['a', None], dtype='string').iloc[1] is pd.NA
文件
- NOTES.md
- csx.json
- requirements.lock
- requirements.txt
- test/contract.py