Remove support for pytype (#14463)

Author: srittau

.gitattributes

@@ -4,6 +4,5 @@
 # Set linguist-language to support comments syntax highlight
 **/stubtest_allowlist*.txt linguist-language=ini
 **/stubtest_allowlists/*.txt linguist-language=ini
-tests/pytype_exclude_list.txt linguist-language=ini
 pyrightconfig*.json linguist-language=jsonc
 .vscode/*.json linguist-language=jsonc

.github/renovate.json5

@@ -24,15 +24,15 @@
     {
       groupName: "most test/lint dependencies",
       matchManagers: ["pip_requirements", "pre-commit"],
-      matchPackageNames: ["!pytype", "!pyright"],
+      matchPackageNames: ["!pyright"],
       description: "Quarterly update of most test dependencies",
       schedule: ["every 3 months on the first day of the month"]
     },
     {
-      "groupName": "pytype and pyright",
+      "groupName": "pyright",
       "matchManagers": ["pip_requirements"],
-      "matchPackageNames": ["pytype", "pyright"],
-      "description": "Daily update of pyright and pytype",
+      "matchPackageNames": ["pyright"],
+      "description": "Daily update of pyright",
       "schedule": ["before 4am"]
     }
   ]

.github/workflows/tests.yml

@@ -34,29 +34,6 @@ jobs:
       - run: uv pip install -r requirements-tests.txt --system
       - run: python ./tests/check_typeshed_structure.py
 
-  pytype:
-    name: "pytype: Check stubs"
-    runs-on: ubuntu-latest
-    steps:
-      - uses: actions/checkout@v4
-      - uses: actions/setup-python@v5
-        with:
-          # Max supported Python version as of pytype 2024.10.11
-          python-version: "3.12"
-      - uses: astral-sh/setup-uv@v6
-        with:
-          version-file: "requirements-tests.txt"
-      - run: uv pip install -r requirements-tests.txt --system
-      - name: Install external dependencies for 3rd-party stubs
-        run: |
-          DEPENDENCIES=$( python tests/get_external_stub_requirements.py )
-          if [ -n "$DEPENDENCIES" ]; then
-              printf "Installing packages:\n  $(echo $DEPENDENCIES | sed 's/ /\n  /g')\n"
-              uv pip install --system $DEPENDENCIES
-          fi
-      - run: uv pip freeze
-      - run: ./tests/pytype_test.py --print-stderr
-
   mypy:
     name: "mypy: Check stubs"
     runs-on: ubuntu-latest

CONTRIBUTING.md

@@ -83,13 +83,6 @@ Note that some tests require extra setup steps to install the required dependenc
   (.venv) > pip install -r requirements-tests.txt
   ```
 
-  To be able to run pytype tests, you'll also need to install it manually
-as it's currently excluded from the requirements file:
-
-  ```powershell
-  (.venv) > pip install -U pytype
-  ```
-
   </td>
 </tr>
 <tr><!-- disables zebra striping --></tr>
@@ -104,10 +97,6 @@ as it's currently excluded from the requirements file:
   uv pip install -r requirements-tests.txt
   ```
 
-  ```shell
-  uv pip install -U pytype
-  ```
-
   </td>
 </tr>
 </table>

README.md

@@ -25,9 +25,9 @@ Typeshed supports Python versions 3.9 to 3.14.
 
 ## Using
 
-If you're just using a type checker ([mypy](https://github.com/python/mypy/),
-[pyright](https://github.com/microsoft/pyright),
-[pytype](https://github.com/google/pytype/), PyCharm, ...), as opposed to
+If you're just using a type checker (e.g. [mypy](https://github.com/python/mypy/),
+[pyright](https://github.com/microsoft/pyright), or PyCharm's built-in type
+checker), as opposed to
 developing it, you don't need to interact with the typeshed repo at
 all: a copy of standard library part of typeshed is bundled with type checkers.
 And type stubs for third party packages and modules you are using can

pyproject.toml

@@ -23,7 +23,6 @@ exclude = [
     # cache directories, etc.:
     ".git",
     ".mypy_cache",
-    ".pytype",
 ]
 
 [tool.ruff.lint]

requirements-tests.txt

@@ -2,8 +2,6 @@
 # be pinned to a specific version to make failure reproducible.
 mypy==1.16.1
 pyright==1.1.403
-# pytype can be installed on Windows, but requires building wheels, let's not do that on the CI
-pytype==2024.10.11; platform_system != "Windows" and python_version >= "3.10" and python_version < "3.13"
 
 # Libraries used by our various scripts.
 # TODO (2025-05-09): Installing this on Python 3.14 on Windows fails at

tests/README.md

@@ -1,8 +1,6 @@
 This directory contains several tests:
 - `tests/mypy_test.py`
 tests the stubs with [mypy](https://github.com/python/mypy/)
-- `tests/pytype_test.py` tests the stubs with
-[pytype](https://github.com/google/pytype/).
 - `tests/pyright_test.py` tests the stubs with
 [pyright](https://github.com/microsoft/pyright).
 - `tests/regr_test.py` runs mypy against the test cases for typeshed's
@@ -19,7 +17,7 @@ in the `tests` and `scripts` directories.
 To run the tests, follow the [setup instructions](../CONTRIBUTING.md#preparing-the-environment)
 in the `CONTRIBUTING.md` document. In particular, you have to run with Python 3.9+.
 
-In order for `pytype_test` and `pyright_test` to work correctly, some third-party stubs
+In order for `pyright_test` to work correctly, some third-party stubs
 may require extra dependencies external to typeshed to be installed in your virtual environment
 prior to running the test.
 You can list or install all of a stubs package's external dependencies using the following script:
@@ -67,18 +65,6 @@ imported but doesn't check whether stubs match their implementation
 Run `python tests/mypy_test.py --help` for information on the various configuration options
 for this script.
 
-## pytype\_test.py
-
-Note: This test cannot be run on Python version < 3.13 as pytype does not yet support
-Python 3.13 and above.
-
-Run using:
-```bash
-(.venv3)$ python3 tests/pytype_test.py
-```
-
-This test works similarly to `mypy_test.py`, except it uses `pytype`.
-
 ## pyright\_test.py
 
 This test requires [Node.js](https://nodejs.org) to be installed. Although

tests/check_typeshed_structure.py

@@ -25,7 +25,7 @@
 
 # These type checkers and linters must have exact versions in the requirements file to ensure
 # consistent CI runs.
-linters = {"mypy", "pyright", "pytype", "ruff"}
+linters = {"mypy", "pyright", "ruff"}
 
 ALLOWED_PY_FILES_IN_TESTS_DIR = {
     "django_settings.py"  # This file contains Django settings used by the mypy_django_plugin during stubtest execution.