mars-project / mars-project/mars
Implements `{DataFrame,Series}.{combine,combine_first}`
Open
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Hacktoberfest
mod: dataframe
task: medium
type: feature
- Dominant language
- Python
- Stars
- 2.7k
- Forks
- 325
- PR merge metrics
- No merged PRs in 30d
Description
Mars lacks pandas API `combine` and `combine_first` to combine two source frames / series into one single result.
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
The issue names the DataFrame and Series combine and combine_first APIs but does not identify files, tests, or entry points. Start by comparing the existing Mars DataFrame/Series API with pandas behavior; done means both methods work for combining two source frames or series and have coverage for the supported semantics.
Written by the indexing model from the issue text.
Assessment
- Tech stack
- pandas, python
- Domain
- data
- Issue type
- Feature
- Difficulty
- 4/5
- Estimated time
- 3-5 days
- Activity status
- Stale
- Clarity
- Mostly clear
- Newbie friendliness
- 30/100