Revert incorrect typing changes (#10222)

Author: Dreamsorcerer

.github/workflows/ci-cd.yml

@@ -49,7 +49,7 @@ jobs:
     - name: Setup Python
       uses: actions/setup-python@v5
       with:
-        python-version: 3.13
+        python-version: 3.11
     - name: Cache PyPI
       uses: actions/[email protected]
       with:

.mypy.ini

@@ -11,8 +11,9 @@ disallow_untyped_calls = True
 disallow_untyped_decorators = True
 disallow_untyped_defs = True
 # TODO(PY312): explicit-override
-enable_error_code = ignore-without-code, possibly-undefined, redundant-expr, redundant-self, truthy-bool, truthy-iterable, unused-awaitable
+enable_error_code = deprecated, ignore-without-code, possibly-undefined, redundant-expr, redundant-self, truthy-bool, truthy-iterable, unused-awaitable
 extra_checks = True
+follow_untyped_imports = True
 implicit_reexport = False
 no_implicit_optional = True
 pretty = True

aiohttp/http_parser.py

@@ -670,7 +670,6 @@ def feed_data(
     ) -> Tuple[List[Tuple[RawResponseMessage, StreamReader]], bool, bytes]:
         if SEP is None:
             SEP = b"\r\n" if DEBUG else b"\n"
-            assert SEP is not None
         return super().feed_data(data, SEP, *args, **kwargs)
 
     def parse_message(self, lines: List[bytes]) -> RawResponseMessage:

aiohttp/web_protocol.py

@@ -583,13 +583,13 @@ async def start(self) -> None:
                 else:
                     task = loop.create_task(coro)
                 try:
-                    resp, reset = await task  # type: ignore[possibly-undefined]
+                    resp, reset = await task
                 except ConnectionError:
                     self.log_debug("Ignored premature client disconnection")
                     break
 
                 # Drop the processed task from asyncio.Task.all_tasks() early
-                del task  # type: ignore[possibly-undefined]
+                del task
                 # https://github.com/python/mypy/issues/14309
                 if reset:  # type: ignore[possibly-undefined]
                     self.log_debug("Ignored premature client disconnection 2")