pyjanitor-devs/pyjanitor

[ENH] transform_column: transform multiple columns

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#284 opened on May 7, 2019

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 (29 comments) (1 reaction) (1 assignee)Python (1,217 stars) (164 forks)batch import
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Description

This issue does not include a description.

Contributor guide

Tech stack
pythonpandasnumpy
Domain
dataapi
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.
stale
ClarityHow clearly the issue explains the expected change, acceptance criteria, and next step.
mostly clear
Prerequisites
Pythonpandaspyjanitor basics
Newbie friendlinessA 1-100 score estimating how approachable this issue is for first-time contributors.
40
Research direction
The issue requests extending `transform column` to handle multiple columns. Currently, `transform column` only works on a single column. The solution involves modifying the function signature to accept a list of columns and apply transformations to each. Check the pyjanitor source code in the ` column transformers` module for existing implementation. Look at the discussion in the issue for proposed designs and edge cases. Ensure backward compatibility.