[Python][Annotations] Add pyrefly check to CI

Open Beginner friendly

#51,474 opened on Sep 23, 2026 1 comment 0 reactions 0 assignees View on GitHub

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Assessment

Difficulty: 2/5
Estimated time: 1-3 hours
Newbie friendliness: 65/100

Issue type: Feature
Clarity: Mostly clear
Activity status: Active
Tech stack: python
Domain: ci-cd

Research direction

Look at the existing CI configuration for Python, likely in .github/workflows/. Review the linked issue #49102 and PR #48622 to understand the context of adding pyrefly. Determine where to add the type check step, ensuring it runs on relevant Python files. Verify the change by running the CI locally or checking a test workflow.

Written by the indexing model from the issue text.

Description

Component: Python Type: enhancement

Describe the enhancement requested

Add pyrefly type check to the CI.
See also https://github.com/apache/arrow/issues/49102 and https://github.com/apache/arrow/pull/48622#discussion_r4085682030

Component(s)

Python

Dominant language: C++
Stars: 17.1k
Forks: 4.3k
Avg merge: 3d 20h
Merged PRs (30d): 99

Contributor guide

Open the contributing 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.

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