rapidsai/cudf

[FEA] Add support for equivalence of Pandas 'unstack' on Series

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#10,059 opened on Jan 15, 2022

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Pythonfeature requestgood first issue

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Description

Is your feature request related to a problem? Please describe. Hi,

While porting some code from Pandas to cuDF, I have noticed that cuDF series do not support unstack method. As an additional request, It would be great if fill_values could be supported in both cudf.DataFrame.unstack and cudf.Series.unstack methods. Thanks!

Describe the solution you'd like To have that method supported in cuDF series.

Describe alternatives you've considered Creating a cuDF DataFrame from the cuDF series, use unstack on the DataFrame.

Contributor guide

Research direction
Examine the existing DataFrame.unstack implementation in cuDF and adapt it for Series. Understand the logic for handling MultiIndex and fill values. Check how pandas Series.unstack behaves and ensure compatibility.
Tech stack
python
Domain
data
Issue type
Feature
DifficultyEstimated implementation difficulty for a new contributor, from 1 for very small changes to 5 for expert-level work.
3
Estimated timeA rough time range for an experienced contributor to investigate, implement, test, and prepare a pull request.
1-2 days
Activity statusHow available the issue appears right now: fresh, active, stale, blocked, or waiting on maintainer input.
Active
ClarityHow clearly the issue explains the expected change, acceptance criteria, and next step.
Clear
Prerequisites
Pythonpandas
Newbie friendlinessA 1-100 score estimating how approachable this issue is for first-time contributors.
50