Switch from toml to tomli (#6023)

Author: sobolevn

.github/workflows/tests.yml

@@ -17,7 +17,7 @@ jobs:
     steps:
       - uses: actions/checkout@v2
       - uses: actions/setup-python@v2
-      - run: pip install toml
+      - run: pip install $(grep tomli== requirements-tests-py3.txt)
       - run: ./tests/check_consistent.py
 
   pep-604:
@@ -77,7 +77,7 @@ jobs:
     steps:
       - uses: actions/checkout@v2
       - uses: actions/setup-python@v2
-      - run: pip install $(grep mypy== requirements-tests-py3.txt)
+      - run: pip install $(grep tomli== requirements-tests-py3.txt) $(grep mypy== requirements-tests-py3.txt)
       - run: ./tests/mypy_test.py --platform=${{ matrix.platform }} --python-version=${{ matrix.python-version }}
 
   pyright:
@@ -125,7 +125,7 @@ jobs:
       - name: Update pip
         run: python -m pip install -U pip
       - name: Install dependencies
-        run: pip install $(grep mypy== requirements-tests-py3.txt)
+        run: pip install $(grep tomli== requirements-tests-py3.txt) $(grep mypy== requirements-tests-py3.txt)
       - name: Run stubtest
         run: python tests/stubtest_stdlib.py --ignore-unused-allowlist
 
@@ -142,6 +142,6 @@ jobs:
         with:
           python-version: 3.9
       - name: Install dependencies
-        run: pip install toml
+        run: pip install $(grep tomli== requirements-tests-py3.txt)
       - name: Run stubtest
         run: python tests/stubtest_third_party.py --num-shards 4 --shard-index ${{ matrix.shard-index }}

requirements-tests-py3.txt

@@ -6,3 +6,4 @@ flake8-bugbear==21.4.3
 flake8-pyi==20.10.0
 isort==5.9.3
 pytype==2021.08.11
+tomli==1.1.0

tests/check_consistent.py

@@ -15,7 +15,7 @@
 import os
 import re
 
-import toml
+import tomli
 
 consistent_files = [
     {"stdlib/@python2/builtins.pyi", "stdlib/@python2/__builtin__.pyi"},
@@ -165,7 +165,7 @@ def _strip_dep_version(dependency):
 def check_metadata():
     for distribution in os.listdir("stubs"):
         with open(os.path.join("stubs", distribution, "METADATA.toml")) as f:
-            data = toml.loads(f.read())
+            data = tomli.loads(f.read())
         assert "version" in data, f"Missing version for {distribution}"
         version = data["version"]
         msg = f"Unsupported Python version {version}"

tests/mypy_test.py

@@ -21,7 +21,7 @@
 from pathlib import Path
 from typing import Dict, NamedTuple
 
-import toml
+import tomli
 
 parser = argparse.ArgumentParser(description="Test runner for typeshed. Patterns are unanchored regexps on the full path.")
 parser.add_argument("-v", "--verbose", action="count", default=0, help="More output")
@@ -101,7 +101,7 @@ def parse_version(v_str):
 def is_supported(distribution, major):
     dist_path = Path("stubs", distribution)
     with open(dist_path / "METADATA.toml") as f:
-        data = dict(toml.loads(f.read()))
+        data = dict(tomli.loads(f.read()))
     if major == 2:
         # Python 2 is not supported by default.
         return bool(data.get("python2", False)) or (dist_path / "@python2").exists()
@@ -154,7 +154,7 @@ def add_configuration(configurations, seen_dist_configs, distribution):
         return
 
     with open(os.path.join("stubs", distribution, "METADATA.toml")) as f:
-        data = dict(toml.loads(f.read()))
+        data = dict(tomli.loads(f.read()))
 
     mypy_tests_conf = data.get("mypy-tests")
     if not mypy_tests_conf:

tests/stubtest_third_party.py

@@ -6,7 +6,7 @@
 import subprocess
 import sys
 import tempfile
-import toml
+import tomli
 import venv
 from glob import glob
 from pathlib import Path
@@ -34,7 +34,7 @@ def get_mypy_req():
 
 def run_stubtest(dist: Path) -> None:
     with open(dist / "METADATA.toml") as f:
-        metadata = dict(toml.loads(f.read()))
+        metadata = dict(tomli.loads(f.read()))
 
     # Ignore stubs that don't support Python 3
     if not has_py3_stubs(dist):