pyproject.toml: update mypy to recent version

Also update the scripts affected by the newer mypy.

pyproject.toml

@@ -43,7 +43,6 @@ requests = "^2.28.1"
 Sphinx = ">=5.1.1,<8.0.0"
 sphinx-rtd-theme = "^1.0.0"
 reno = "^3.5.0"
-mypy = "^0.971"
 types-requests = "^2.28.9"
 pytest = ">=7.1.3,<9.0.0"
 pytest-cov = ">=3,<5"
@@ -52,6 +51,7 @@ types-toml = "^0.10.8"
 toml = "^0.10.2"
 black = ">=23.1,<25.0"
 ruff = "^0.2.1"
+mypy = "^1.9.0"
 
 
 [tool.poetry.group.doc]
@@ -70,11 +70,11 @@ pytest = ">=7.1.3,<9.0.0"
 pytest-cov = ">=3,<5"
 coverage = ">=6.4.4,<8.0.0"
 requests = "^2.28.1"
-mypy = "^0.971"
 types-requests = "^2.28.9"
 pre-commit = ">=2.20,<4.0"
 types-toml = "^0.10.8"
 toml = "^0.10.2"
+mypy = "^1.9.0"
 
 [build-system]
 requires = ["poetry-core>=1.0.0"]

scripts/release.py

@@ -52,7 +52,7 @@ def check_environment():
             raise UsageError("No such binary: {}".format(binary))
 
 
-def main():
+def main() -> None:
     parser = argparse.ArgumentParser()
     parser.add_argument("new_version", help="Version to release")
 

tests/test_release.py

@@ -112,10 +112,13 @@ def version_to_tuple(version: str) -> tuple:
 def test_no_duplicate_classifiers(build: Build, pyproject):
     pyproject_meta = pyproject["tool"]["poetry"]
     wheel_meta = build.wheel.get_meta(version=pyproject_meta["version"])
-    classifiers = sorted(wheel_meta.get_all("Classifier"))
-    unique_classifiers = sorted(set(wheel_meta.get_all("Classifier")))
+    classifiers = wheel_meta.get_all("Classifier")
+    assert classifiers is not None
 
-    assert classifiers == unique_classifiers
+    sorted_classifiers = sorted(classifiers)
+    unique_classifiers = sorted(set(classifiers))
+
+    assert sorted_classifiers == unique_classifiers
 
 
 def test_python_version(build: Build, pyproject):
@@ -130,7 +133,10 @@ def test_python_version(build: Build, pyproject):
 
     min_version_tuple = version_to_tuple(min_version)
 
-    for classifier in wheel_meta.get_all("Classifier"):
+    classifiers = wheel_meta.get_all("Classifier")
+    assert classifiers is not None
+
+    for classifier in classifiers:
         if classifier.startswith("Programming Language :: Python ::"):
             version_tuple = version_to_tuple(classifier.split("::")[-1].strip())
             if len(version_tuple) > 1: