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### We would like to learn about your use case. For example, if this feature is needed to adopt Narwhals in an open source project, could you please enter the link to it below?
I'm writing a `gr…
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We could allow users to do something like:
```python
df = nw.from_dict({'a': [1, 2, 3], 'b': [4,5,6]})
```
without specifying which backend they want to use. Then, we use whatever they have instal…
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### Checks
- [X] I have checked that this issue has not already been reported.
- [X] I have confirmed this bug exists on the [latest version](https://pypi.org/project/polars/) of Polars.
### Re…
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### Description
Hi. I'm currently working on copy-paste functionality for HoloViz Panel in https://github.com/awesome-panel/panel-copy-paste.
I would like to be able to convert a Polars datafram…
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As of now, covariates `X`, treatment assignments `w` and observey outcomes `y` can be provided as `numpy` datastructures (`np.ndarray`) or as `pandas` datastructures (`pd.Series` and `pd.DataFrame`) r…
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Hello,
I wanted to report this error when running `motif discovery`.
```
Traceback (most recent call last):
File "/Accounts/gkanaan/miniconda3/nanomotif/bin/nanomotif", line 8, in
sys.…
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**Describe the bug**
I've installed python (cleanly) on windows 10 following the miniforge instructions. When trying to run AREPL polars doesn't work. Trying to import polars gives the error `UserWar…
D3SL updated
2 months ago
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我发现example中alpha158转换结果跟qlib直接生成的有以下不一致：
- 缺失slope, r2, resd, cord, imax, imin, imxd特征
- 部分特征计算结果与qlib不一致
我通过下面代码进行了修复，残留问题包括：
- max、min特征与qlib结果仍然不一致，但已经使用了polars的原始函数了
- resd、slope自己的实现与qlib差…
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### System Info
python 3.11, pandas-ai 2.2.14, ubuntu 22.04
### 🐛 Describe the bug
I'm looking for a way to work with large parquet files without loading entirely into RAM. This is incredibly wel…
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### Checks
- [X] I have checked that this issue has not already been reported.
- [X] I have confirmed this bug exists on the [latest version](https://pypi.org/project/polars/) of Polars.
### Re…