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Hi everyone,
I've been using the mrmr_classif method from the mRMR library for a while without any issues. However, recently it started returning no results and doesn't give any error messages. I'v…
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### Description
I often work with long-format tables that contain multiple value columns to accommodate attributes with different data types, unfortunately `DataFrame.pivot` is not designed to handl…
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I encountered this bug when I loaded a dataframe stored in the Arrow IPC format.
```java
// Java Code from "Apache Arrow Java Cookbook"
File file = new File("example.arrow");
try (
…
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**Is your feature request related to a problem or challenge? Please describe what you are trying to do.**
In addition to the information we already have in the online documentation, it would be hel…
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### Description
In the Arrow project, we recently created a [new protocol for sharing Arrow data in Python](https://arrow.apache.org/docs/format/CDataInterface/PyCapsuleInterface.html). One of the …
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The top_k expression is essentially an nlargest + limit operation and [is sometimes used to short circuit](https://www.snowflake.com/en/blog/super-fast-top-k-queries/) sort + limit scenarios common in…
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## How to reproduce
Suppose you have an Excel file with the following mixed-type data:
| Header |
|--------|
| `=DATE(2024, 7, 1)` |
| `=DATE(2024, 7, 2)` |
| `"some string"` |
Now lets …
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### Issue Report Checklist
* [ ] Searched the [issues page](https://github.com/spyder-ide/spyder/issues?q=is%3Aissue) for similar reports
* [ ] Read the relevant sections of the [Spyder Troubl…
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So I am trying to use Polars and Rust for DataFrames and I think the biggest thing missing is the ability to read excel file and save it as dataframe in Rust. I am talking here about Rust version of P…
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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.
### Reprodu…