Update Python version for mypy to 3.13 (#135636)

homeassistant/components/http/static.py

@@ -4,7 +4,7 @@ from __future__ import annotations
 
 from collections.abc import Mapping
 from pathlib import Path
-from typing import TYPE_CHECKING, Final
+from typing import Final
 
 from aiohttp.hdrs import CACHE_CONTROL, CONTENT_TYPE
 from aiohttp.web import FileResponse, Request, StreamResponse
@@ -17,12 +17,7 @@ CACHE_HEADER = f"public, max-age={CACHE_TIME}"
 CACHE_HEADERS: Mapping[str, str] = {CACHE_CONTROL: CACHE_HEADER}
 RESPONSE_CACHE: LRU[tuple[str, Path], tuple[Path, str]] = LRU(512)
 
-if TYPE_CHECKING:
-    # mypy uses Python 3.12 syntax for type checking
-    # once it uses Python 3.13, this can be removed
-    _GUESSER = CONTENT_TYPES.guess_type
-else:
-    _GUESSER = CONTENT_TYPES.guess_file_type
+_GUESSER = CONTENT_TYPES.guess_file_type
 
 
 class CachingStaticResource(StaticResource):

homeassistant/helpers/config_validation.py

@@ -1,8 +1,6 @@
 """Helpers for config validation using voluptuous."""
 
-# PEP 563 seems to break typing.get_type_hints when used
-# with PEP 695 syntax. Fixed in Python 3.13.
-# from __future__ import annotations
+from __future__ import annotations
 
 from collections.abc import Callable, Hashable, Mapping
 import contextlib
@@ -354,7 +352,7 @@ def ensure_list[_T](value: _T | None) -> list[_T] | list[Any]:
     """Wrap value in list if it is not one."""
     if value is None:
         return []
-    return cast("list[_T]", value) if isinstance(value, list) else [value]
+    return cast(list[_T], value) if isinstance(value, list) else [value]
 
 
 def entity_id(value: Any) -> str:

mypy.ini

@@ -3,7 +3,7 @@
 # To update, run python3 -m script.hassfest -p mypy_config
 
 [mypy]
-python_version = 3.12
+python_version = 3.13
 platform = linux
 plugins = pydantic.mypy, pydantic.v1.mypy
 show_error_codes = true

script/hassfest/mypy_config.py

@@ -9,6 +9,8 @@ import os
 from pathlib import Path
 from typing import Final
 
+from homeassistant.const import REQUIRED_PYTHON_VER
+
 from .model import Config, Integration
 
 # Component modules which should set no_implicit_reexport = true.
@@ -29,18 +31,7 @@ HEADER: Final = """
 """.lstrip()
 
 GENERAL_SETTINGS: Final[dict[str, str]] = {
-    # We use @dataclass_transform in all our EntityDescriptions, causing
-    # `__replace__` to be already synthesized by mypy, causing **every** use of
-    # our entity descriptions to fail:
-    #
-    # error: Signature of "__replace__" incompatible with supertype "EntityDescription"
-    #
-    # Until this is fixed in mypy, we keep mypy locked on to Python 3.12 as we
-    # have done for the past few releases.
-    #
-    # Ref: https://github.com/python/mypy/issues/18216
-    # "python_version": ".".join(str(x) for x in REQUIRED_PYTHON_VER[:2]),
-    "python_version": "3.12",
+    "python_version": ".".join(str(x) for x in REQUIRED_PYTHON_VER[:2]),
     "platform": "linux",
     "plugins": ", ".join(  # noqa: FLY002
         [