lincc-frameworks/nested-pandas

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Efficient Pandas representation for nested associated datasets.

Stars: 26
Forks: 8
Open beginner issues: 0
Indexed issues: 65
Avg merge: 2d 2h
Merged PRs (30d): 9

Dominant language: Python
License: MIT
Last GitHub push: Sep 10, 2026
Latest indexed: Sep 19, 2026
Contributing guide: No contributing guide
Code of conduct: No code of conduct
Beginner labels: good first issue

Beginner friendly Everything

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65 open issues indexed

Add padding utility to nested columns Open

enhancement

Difficulty 4/5 3-5 days Newbie friendliness 48/100

lincc-frameworks/nested-pandas#558 · Opened Sep 18, 2026
Use pandas Extension dtype and array test suite classes for nested Open

Difficulty 3/5 1-2 days Newbie friendliness 68/100

lincc-frameworks/nested-pandas#556 · Opened Sep 17, 2026
`map_rows(..., columns=["nested"])` should pass subcolumns to the UDF, not a frame Open

bug

Difficulty 3/5 1-2 days Newbie friendliness 68/100

lincc-frameworks/nested-pandas#555 · Opened Sep 16, 2026
Support reading FixedShapeTensor pyarrow columns as TensorExtensionArray Open

enhancement interface LSDB modalities-support

lincc-frameworks/nested-pandas#552 · 1 assignee · Opened Sep 11, 2026
Use parallel parquet read with `datafusion>=55` Open

enhancement LSDB

Difficulty 4/5 3-5 days Newbie friendliness 48/100

lincc-frameworks/nested-pandas#549 · Opened Sep 9, 2026
Tracker: Variable Shaped Tensors Open

enhancement investigation LSDB modalities-support

Difficulty 5/5 Over a week Newbie friendliness 30/100

lincc-frameworks/nested-pandas#548 · Opened Sep 4, 2026
Tracker: NestedTensors Open

enhancement investigation LSDB modalities-support

Difficulty 5/5 Over a week Newbie friendliness 25/100

lincc-frameworks/nested-pandas#547 · Opened Sep 4, 2026
Documentation for Image operations such as rotation on a Tensor Column Open

documentation LSDB modalities-support

Difficulty 2/5 1-3 hours Newbie friendliness 72/100

lincc-frameworks/nested-pandas#546 · Opened Sep 4, 2026
Support tensor columns in map_rows Open

enhancement LSDB modalities-support

lincc-frameworks/nested-pandas#545 · 1 assignee · Opened Sep 4, 2026
TensorColumns inside a NestedColumn (e.g. TimeSeries of images) Open

enhancement LSDB modalities-support

Difficulty 4/5 3-5 days Newbie friendliness 52/100

lincc-frameworks/nested-pandas#544 · Opened Sep 4, 2026
NestedFrame repr/html_repr includes rendering of tensor columns Open

enhancement interface LSDB modalities-support

lincc-frameworks/nested-pandas#543 · 1 assignee · Opened Sep 4, 2026
Support NestedFrame setitem with TensorSeries or Numpy array for tensors Open

enhancement interface LSDB modalities-support

Difficulty 3/5 1-2 days Newbie friendliness 64/100

lincc-frameworks/nested-pandas#542 · Opened Sep 4, 2026
Support returning different Series subclasses from getitem based on column dtype. Open

enhancement interface LSDB modalities-support

lincc-frameworks/nested-pandas#541 · 1 assignee · Opened Sep 4, 2026
TensorSeries - Math Operations Open

enhancement LSDB modalities-support

Difficulty 3/5 1-2 days Newbie friendliness 65/100

lincc-frameworks/nested-pandas#540 · Opened Sep 4, 2026
TensorSeries - setitem with numpy array Open

enhancement interface LSDB modalities-support

Difficulty 3/5 1-2 days Newbie friendliness 55/100

lincc-frameworks/nested-pandas#539 · Opened Sep 4, 2026
TensorSeries - getitem to numpy array Open

enhancement interface LSDB modalities-support

Difficulty 2/5 1-3 hours Newbie friendliness 64/100

lincc-frameworks/nested-pandas#538 · Opened Sep 4, 2026
TensorSeries - repr/html_repr Open

enhancement interface LSDB modalities-support

Difficulty 5/5 Over a week Newbie friendliness 30/100

lincc-frameworks/nested-pandas#537 · Opened Sep 4, 2026
TensorSeries - conversion to other types Open

enhancement interface LSDB modalities-support

Difficulty 3/5 1-2 days Newbie friendliness 54/100

lincc-frameworks/nested-pandas#536 · Opened Sep 4, 2026
Custom pandas Series subclass for tensors Open

enhancement LSDB modalities-support

lincc-frameworks/nested-pandas#535 · 1 assignee · Opened Sep 4, 2026
Pandas Extension dtype and array for Tensors Open

enhancement LSDB modalities-support

lincc-frameworks/nested-pandas#534 · 1 assignee · Opened Sep 4, 2026
`NestedSeries` HTML optimization should truncate long nested values Open

bug modalities-support

Difficulty 3/5 1-2 days Newbie friendliness 45/100

lincc-frameworks/nested-pandas#533 · Opened Sep 2, 2026
Investigate datafusion for parquet read performance Open

LSDB performance

lincc-frameworks/nested-pandas#529 · 1 assignee · Opened Sep 1, 2026
Potential performance regression in `count_nested` Open

bug LSDB

Difficulty 3/5 1-2 days Newbie friendliness 48/100

lincc-frameworks/nested-pandas#520 · Opened Aug 21, 2026
dropna on a pyarrow float subcolumn silently keeps NaN rows Open

LSDB

Difficulty 3/5 1-2 days Newbie friendliness 64/100

lincc-frameworks/nested-pandas#518 · 1 comment · Opened Aug 18, 2026
NestedFrame Representation for Image Columns Open

enhancement LSDB modalities-support

Difficulty 5/5 Over a week Newbie friendliness 25/100

lincc-frameworks/nested-pandas#515 · Opened Jul 24, 2026
Support `UPath` and network filesystems in `NestedFrame.to_parquet` Open

enhancement LSDB

Difficulty 3/5 1-2 days Newbie friendliness 45/100

lincc-frameworks/nested-pandas#511 · Opened Jul 16, 2026
Implement isin Open

enhancement

Difficulty 3/5 1-2 days Newbie friendliness 50/100

lincc-frameworks/nested-pandas#508 · 1 comment · Opened Jul 15, 2026
Add `pandas-stubs` to dev requirements Open

enhancement

Difficulty 2/5 1-3 hours Newbie friendliness 68/100

lincc-frameworks/nested-pandas#506 · Opened Jul 15, 2026
Support for pd.col, newly added in Pandas 3 Open

enhancement

Difficulty 4/5 3-5 days Newbie friendliness 48/100

lincc-frameworks/nested-pandas#504 · Opened Jul 8, 2026
Use `UPath.rglob` instead of recursive `UPath.iterdir` in `read_parquet` Open

enhancement LSDB performance

Difficulty 2/5 1-3 hours Newbie friendliness 68/100

lincc-frameworks/nested-pandas#497 · Opened May 20, 2026
Create visualizations for presentations Open

Difficulty 5/5 Over a week Newbie friendliness 45/100

lincc-frameworks/nested-pandas#485 · Opened Apr 9, 2026
`map_rows(njit=True)` Improvements Open

Difficulty 3/5 1-2 days Newbie friendliness 55/100

lincc-frameworks/nested-pandas#466 · 2 comments · Opened Mar 5, 2026
Offer nested_frame.to_pyarrow_array(s) method Open

enhancement

Difficulty 3/5 1-2 days Newbie friendliness 45/100

lincc-frameworks/nested-pandas#452 · Opened Feb 19, 2026
Investigate `_SeriesFromNest` missing metadata with specific environments Open

bug investigation

Difficulty 4/5 3-5 days Newbie friendliness 35/100

lincc-frameworks/nested-pandas#437 · 1 comment · Opened Jan 14, 2026
Can we convert dictionary-encoded parquet columns to Categorical Dtype? Open

Difficulty 4/5 3-5 days Newbie friendliness 35/100

lincc-frameworks/nested-pandas#435 · 1 comment · Opened Jan 13, 2026
Pyarrow multi-threading support for struct-list parquet file reads Open

LSDB performance

Difficulty 5/5 Over a week Newbie friendliness 25/100

lincc-frameworks/nested-pandas#421 · 1 comment · Opened Dec 23, 2025
Support list-view arrow arrays Open

enhancement

Difficulty 3/5 1-2 days Newbie friendliness 35/100

lincc-frameworks/nested-pandas#417 · Opened Dec 19, 2025
Failed to create flat dataframe Open

bug good first issue

Difficulty 3/5 1-2 days Newbie friendliness 42/100

lincc-frameworks/nested-pandas#413 · 5 comments · Opened Dec 10, 2025
Error message of `read_parquet(..., columns=['non-existing-column'])` should include column list Open

enhancement interface LSDB

lincc-frameworks/nested-pandas#390 · 1 assignee · Opened Oct 22, 2025
Allow series outputs for single-column `NestedSeries.explode`, `NestSeriesAccessor.to_flat`, `NestSeriesAccessor.to_lists` results Open

LSDB question

Difficulty 3/5 1-2 days Newbie friendliness 48/100

lincc-frameworks/nested-pandas#382 · 2 comments · Opened Oct 7, 2025
Move NestedSeries.with_field to setitem behavior Open

interface

Difficulty 3/5 1-2 days Newbie friendliness 25/100

lincc-frameworks/nested-pandas#361 · 1 comment · Opened Sep 16, 2025
Add functionality of `NestedSeries.without_field(field)` to delitem Open

interface

Difficulty 3/5 1-2 days Newbie friendliness 35/100

lincc-frameworks/nested-pandas#358 · Opened Sep 11, 2025
Remove `NestAccessor.to_flatten_inner` Open

interface

Difficulty 3/5 1-2 days Newbie friendliness 35/100

lincc-frameworks/nested-pandas#357 · 1 comment · Opened Sep 11, 2025
JOSS paper? Open

investigation question

Difficulty 5/5 Over a week Newbie friendliness 20/100

lincc-frameworks/nested-pandas#353 · Opened Sep 9, 2025
`NestedFrame.__setitem__("new_nested.x", flat_values)` repeats values for non-unique index Open

bug LSDB question

Difficulty 3/5 1-2 days Newbie friendliness 45/100

lincc-frameworks/nested-pandas#324 · 2 comments · Opened Aug 12, 2025
NestedExtensionArray `__get_item__` loses pyarrow dtypes Open

bug LSDB question

Difficulty 4/5 3-5 days Newbie friendliness 45/100

lincc-frameworks/nested-pandas#321 · 2 comments · Opened Aug 1, 2025
Pandas Function Extension Megatracker Open

enhancement interface

Difficulty 5/5 Over a week Newbie friendliness 20/100

lincc-frameworks/nested-pandas#295 · 1 reaction · Opened Jun 25, 2025
Implement a parallel version of `map_rows` Open

enhancement LSDB performance

Difficulty 5/5 Over a week Newbie friendliness 30/100

lincc-frameworks/nested-pandas#286 · Opened Jun 13, 2025
Add a "why nested-pandas?" section to the docs Open

documentation enhancement

Difficulty 3/5 1-2 days Newbie friendliness 55/100

lincc-frameworks/nested-pandas#283 · 1 comment · Opened Jun 11, 2025
Implement any() and all() for NestedExtensionArray Open

enhancement LSDB

Difficulty 4/5 3-5 days Newbie friendliness 35/100

lincc-frameworks/nested-pandas#275 · Opened May 22, 2025

lincc-frameworks/nested-pandas

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