pandas

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- [x] closes #61231 (Replace xxxx with the GitHub issue number) - [ ] [Tests added and passed](https://pandas.pydata.org/pandas-docs/dev/development/contributing_codebase.html#writing-tests) if fixing a bug or adding a new feature - [ ]...

KevsterAmp

ENH: improve optional import error message

1

- [x] closes #61521 (Replace xxxx with the GitHub issue number) - [ ] [Tests added and passed](https://pandas.pydata.org/pandas-docs/dev/development/contributing_codebase.html#writing-tests) if fixing a bug or adding a new feature - [ ]...

KevsterAmp

BUG: PerformanceWarning when agg with pd.NamedAgg and as_index=False

1

### Pandas version 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://pandas.pydata.org/docs/whatsnew/index.html) of...

xma08

BUG: Groupby aggregate coersion of outputs inconsistency for pyarrow dtypes

2

### Pandas version checks - [x] I have checked that this issue has not already been reported. - [ ] I have confirmed this bug exists on the [latest version](https://pandas.pydata.org/docs/whatsnew/index.html)...

AndrejIring

PDEP-18: Nullable Object Dtype

55

as per PDEP-1 > The initial status of a PDEP will be Status: Draft. This will be changed to Status: Under discussion by the author(s), when they are ready to...

simonjayhawkins

ENH: Enable nsmallest/nlargest on object dtype

24

Is it possible to implement method DataFrame.nsorted that equivalent to `df.sort_values(by=["col1", "col2"], ascending=[True, False]).head(k)`, but with time complexity O(n log k)? I know about `nlargest` and `nsmallest` methods but unfortunately...

Gri72

BUG: Copy attrs on pd.merge()

3

This uses the same logic as `pd.concat()`: Copy `attrs` only if all input `attrs` are identical. I've refactored the handling in __finalize__ from special-casing based on th the method name...

timhoffm

PDEP-16: Consistent missing value handling

3

Note: this is only a draft, partial proposal. It already lists the main points of the proposal at a high level, but of course we need to add a lot...

jorisvandenbossche

BUG: Series.str.isdigit with pyarrow dtype doesn't honor unicode superscripts

6

### Pandas version 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://pandas.pydata.org/docs/whatsnew/index.html) of...

GarrettWu

CI: Test pandas with numpy 1.26

4

See #60154 We should add the build and fix the existing errors

datapythonista