示例
polars 1.43.2: Chain Polars 1.43.2 with_columns calls when one derived expression depends on an alias created by another
已验证示例 — pypi polars 1.43.2: Chain Polars 1.43.2 with_columns calls when one derived expression depends on an alias created by another. contract 在 python 3.12…
sha256:5ac2d12a9f21b2727533a0527081ef11fdbadf709bd4929b32de101ca87631fb
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 3.12 linux · musl x64 python 3.12 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 |
2026-08-17 |
| 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
- Chain Polars 1.43.2 with_columns calls when one derived expression depends on an alias created by another
- 符号
-
- polars.DataFrame
- polars.DataFrame.with_columns
- polars.LazyFrame.with_columns
- polars.LazyFrame.collect_schema
- polars.LazyFrame.collect
- polars.exceptions.ColumnNotFoundError
- 环境
- python 3.12
- 创建时间
- 2026-08-17T02:15:14Z
契约
- assert sibling expressions in one DataFrame.with_columns call cannot see a newly created alias and raise ColumnNotFoundError
- assert two chained LazyFrame.with_columns calls expose the derived schema before execution and collect the exact dependent values
- assert the chained lazy operations leave the original DataFrame columns unchanged
文件
- csx.json
- requirements.lock
- requirements.txt
- test/contract.py