3 people bb81a6eeee GH-49102: [CI] Add type checking infrastructure and CI workflow for type annotations (#48618) ...

### Rationale for this change

This is the first in series of PRs adding type annotations to pyarrow and resolving #32609.

### What changes are included in this PR?

This PR establishes infrastructure for type checking:

- Adds CI workflow for running mypy, pyright, and ty type checkers on linux, macos and windows
- Configures type checkers to validate stub files (excluding source files for now)
- Adds PEP 561 `py.typed` marker to enable type checking
- Updates wheel build scripts to include stub files in distributions
- Creates initial minimal stub directory structure
- Updates developer documentation with type checking workflow

### Are these changes tested?

No. This is mostly a CI change.

### Are there any user-facing changes?

This does not add any actual annotations (only `py.typed` marker) so user should not be affected.
* GitHub Issue: #32609
* GitHub Issue: #49102

Lead-authored-by: Rok Mihevc <rok@mihevc.org>
Co-authored-by: Sutou Kouhei <kou@cozmixng.org>
Co-authored-by: Raúl Cumplido <raulcumplido@gmail.com>
Signed-off-by: Rok Mihevc <rok@mihevc.org>

2026-02-09 19:47:45 +01:00

..

run_emscripten_tests.py

GH-47692: [CI][Python] Do not fallback to return 404 if wheel is found on emscripten jobs (#49007)

2026-01-27 13:36:24 +01:00

test_imports.py

ARROW-4637: [Python] Conditionally import pandas symbols if they are used. Do not require pandas as a test dependency

2019-03-19 11:59:30 -05:00

test_leak.py

GH-45619: [Python] Use f-string instead of string.format (#45629)

2025-05-12 14:34:49 +02:00

update_stub_docstrings.py

GH-49102: [CI] Add type checking infrastructure and CI workflow for type annotations (#48618)

2026-02-09 19:47:45 +01:00