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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…
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First of all, thank you very much for this great R Polars project.
I would like to implement a db connection rust binding R package and convert data to polars directly and hence r-polars, but I do…
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Continued from #942 and #1126
(The following text is copied from 's README)
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## Motivation
I have been developing r-polars for over a year, and I felt that a significant rewrite was nec…
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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…
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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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df = df.group_by(by=[_DATE_]).map_groups(func_2_cs__date)
^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
File "C:\Users\123\AppData\Roaming\Python\Python311\site-packages\polars…
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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…
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### What happens?
After loading a NumPy float array with a NaN into DuckDB, `fetchnumpy()` returns a `MaskedArray`, which is not necessary for float types. Further, the returned `MaskedArray` does …
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### 💭 Description
### Description
Vaex is a fast memory mapping engine; better than Pandas for Dataframe management. However it is not available in `Python >=3.11` as of June 2024, (https://github…
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**Is your feature request related to a problem? Please describe.**
It's a small issue, but in a repo that is attempting to transition from Pandas to Polars over time, there is a mix of possible Panda…