Enable nearly all pyupgrade rules (except on test cases)

pyproject.toml

@@ -27,6 +27,7 @@ exclude = [
 select = [
     "FA", # flake8-future-annotations
     "I", # isort
+    "UP", # pyupgrade
     # Only enable rules that have safe autofixes:
     "F401", # Remove unused imports
     "PYI009", # use `...`, not `pass`, in empty class bodies
@@ -39,14 +40,16 @@ select = [
     "PYI032", # use `object`, not `Any`, as the second parameter to `__eq__`
     "PYI055", # multiple `type[T]` usages in a union
     "PYI058", # use `Iterator` as the return type for `__iter__` methods
-    "UP004", # Remove explicit `object` inheritance
-    "UP006", # PEP-585 autofixes
-    "UP007", # PEP-604 autofixes
-    "UP013", # Class-based syntax for TypedDicts
-    "UP014", # Class-based syntax for NamedTuples
-    "UP019", # Use str over typing.Text
-    "UP035", # import from typing, not typing_extensions, wherever possible
-    "UP039", # don't use parens after a class definition with no bases
+]
+ignore = [
+    # We like explicit open modes
+    "UP015", # Unnecessary open mode parameters
+]
+
+[tool.ruff.lint.extend-per-file-ignores]
+# Generated protobuf files:
+"*_pb2.pyi" = [
+    "UP036", # Version block is outdated for minimum Python version
 ]
 
 [tool.ruff.lint.isort]

scripts/stubsabot.py

@@ -516,7 +516,7 @@ async def determine_action(stub_path: Path, session: aiohttp.ClientSession) -> U
     )
 
 
-@functools.lru_cache()
+@functools.lru_cache
 def get_origin_owner() -> str:
     output = subprocess.check_output(["git", "remote", "get-url", "origin"], text=True).strip()
     match = re.match(r"([email protected]:|https://github.com/)(?P<owner>[^/]+)/(?P<repo>[^/\s]+)", output)

stubs/six/six/moves/builtins.pyi

@@ -1 +1,4 @@
-from builtins import *
+# flake8: noqa: NQA102 # https://github.com/plinss/flake8-noqa/issues/22
+# six explicitly re-exports builtins. Normally this is something we'd want to avoid.
+# But this is specifically a compatibility package.
+from builtins import *  # noqa: UP029

tests/pytype_test.py

@@ -210,7 +210,7 @@ def run_all_tests(*, files_to_test: Sequence[str], print_stderr: bool, dry_run:
     missing_modules = get_missing_modules(files_to_test)
     print("Testing files with pytype...")
     for i, f in enumerate(files_to_test):
-        python_version = "{0.major}.{0.minor}".format(sys.version_info)
+        python_version = f"{sys.version_info.major}.{sys.version_info.minor}"
         if dry_run:
             stderr = None
         else: