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This meta-issue is a roadmap for the developments of the `AggJoiner` and `AggTarget` estimators, currently implemented in #600.
We need to merge the following PRs before tackling any of the develop…
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I have a use-case where I want to extract data as an arrow table, save as parquet, and then later load it with polars.
My problem is that I cannot figure out how to avoid extension types, in particul…
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## Purpose:
Improve readability and ease of committing
## Issue:
The current HTML structure is challenging to read and maintain due to its deeply nested nature and code blocks, which break HTML i…
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### Problem description
Using df.sort() with a list[i64] column raises an error pointing to:
https://github.com/pola-rs/polars/blob/master/polars/polars-core/src/series/series_trait.rs#L390-L399…
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With https://github.com/scikit-learn/scikit-learn/pull/29699 we start by having two groups of tests:
- API: the PR introduces a very basic start for this category from existing tests, but the idea …
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### What happened?
I ran this:
```python
In [1]: import polars as pl; import ibis; import numpy as np
In [2]: rng = np.random.default_rng(1)
In [3]: arr = rng.integers(-100, 100, size=(100,…
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### Problem description
Although perhaps not extremely useful, we should allow structs without any fields for the sake of consistency.
In the current behaviour, Polars conjures up a single unnam…
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### Description
As of polars==0.20.30
- str.extract extracts regex capture groups while
- str.extract_all extracts the whole regex match
Would be nice if I could tell `str.extract_all` to beha…
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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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Hi,
Was wondering if it's worth looking through the Polars checks implemented in the Python library `cuallee` to see if they're worth including in `Field`?