scikit-learn / scikit-learn/scikit-learn
repr of column transformer unhelpful
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- Python
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Description
Here's a screenshot from a tutorial I did the other day:
The repr currently includes part of the dataframe, which I find of questionable value to begin with. Additionally, there's ellipsis inside the dataframe, which is hard to see but means that there is actually two different dataframes being shown here (the first part is from the mask of the first transformer, the second from the mask of the second transformer).
I'm not sure what a good solution would be. Possibly a custom repr that hides the columns if they are too long to show? Or trying more magic in the general repr? @NicolasHug had a hard time making that much smarter when he tried in the fall.
Given how central the ColumnTransformer is, I think we should make sure it's easy to understand, including the repr.
Contributor guide
First steps
- Read the whole issue, then the project's contributing guide.
- Comment on the issue to say you are picking it up — it saves two people doing the same work.
- Fork the repository and make your change on a branch.
- Open a pull request that references the issue number.
Research direction
Start at the ColumnTransformer entry point and inspect how its current repr includes transformer dataframes. Review the existing discussion for a decided representation, then define a result that avoids confusing multiple truncated dataframes while remaining understandable for common ColumnTransformer use.
Written by the indexing model from the issue text.
Assessment
- Tech stack
- python
- Domain
- machine-learning
- Issue type
- Feature
- Difficulty
- 5/5
- Estimated time
- Over a week
- Activity status
- Stale
- Clarity
- Needs clarification
- Newbie friendliness
- 35/100