diff --git a/app/modules/themoviedb/tmdbv3api/objs/discover.py b/app/modules/themoviedb/tmdbv3api/objs/discover.py
index ffddd53f3..ebe29f1cb 100644
--- a/app/modules/themoviedb/tmdbv3api/objs/discover.py
+++ b/app/modules/themoviedb/tmdbv3api/objs/discover.py
@@ -1,12 +1,19 @@
+from typing import Any, Callable, cast
+from urllib.parse import urlencode
+
 from app.runtime.cache import cached
 from app.runtime.settings import get_runtime_setting
 
-from ..tmdb import TMDb
+from ..tmdb import TMDb, TMDbJson
 
-try:
-    from urllib import urlencode
-except ImportError:
-    from urllib.parse import urlencode
+_cached_discover = cast(
+    Callable[[Callable[..., Any]], Callable[..., Any]],
+    cached(
+        maxsize=1,
+        ttl=43200,
+        empty_ttl=get_runtime_setting("EMPTY_RESULT_CACHE_TTL"),
+    ),
+)
 
 
 class Discover(TMDb):
@@ -15,8 +22,11 @@ class Discover(TMDb):
         "tv": "/discover/tv"
     }
 
-    @cached(maxsize=1, ttl=43200, empty_ttl=get_runtime_setting('EMPTY_RESULT_CACHE_TTL'))
-    def discover_movies(self, params_tuple):
+    @_cached_discover
+    def discover_movies(
+        self,
+        params_tuple: tuple[tuple[str, Any], ...],
+    ) -> TMDbJson:
         """
         Discover movies by different types of data like average rating, number of votes, genres and certifications.
         :param params_tuple: dict
@@ -25,8 +35,11 @@ class Discover(TMDb):
         params = dict(params_tuple)
         return self._request_obj(self._urls["movies"], urlencode(params), key="results", call_cached=False)
 
-    @cached(maxsize=1, ttl=43200, empty_ttl=get_runtime_setting('EMPTY_RESULT_CACHE_TTL'))
-    def discover_tv_shows(self, params_tuple):
+    @_cached_discover
+    def discover_tv_shows(
+        self,
+        params_tuple: tuple[tuple[str, Any], ...],
+    ) -> TMDbJson:
         """
         Discover TV shows by different types of data like average rating, number of votes, genres,
         the network they aired on and air dates.
@@ -35,8 +48,11 @@ class Discover(TMDb):
         """
         return self._request_obj(self._urls["tv"], urlencode(params_tuple), key="results", call_cached=False)
 
-    @cached(maxsize=1, ttl=43200, empty_ttl=get_runtime_setting('EMPTY_RESULT_CACHE_TTL'))
-    async def async_discover_movies(self, params_tuple):
+    @_cached_discover
+    async def async_discover_movies(
+        self,
+        params_tuple: tuple[tuple[str, Any], ...],
+    ) -> TMDbJson:
         """
         Discover movies by different types of data like average rating, number of votes, genres and certifications.（异步版本）
         :param params_tuple: dict
@@ -45,8 +61,11 @@ class Discover(TMDb):
         params = dict(params_tuple)
         return await self._async_request_obj(self._urls["movies"], urlencode(params), key="results", call_cached=False)
 
-    @cached(maxsize=1, ttl=43200, empty_ttl=get_runtime_setting('EMPTY_RESULT_CACHE_TTL'))
-    async def async_discover_tv_shows(self, params_tuple):
+    @_cached_discover
+    async def async_discover_tv_shows(
+        self,
+        params_tuple: tuple[tuple[str, Any], ...],
+    ) -> TMDbJson:
         """
         Discover TV shows by different types of data like average rating, number of votes, genres,
         the network they aired on and air dates.（异步版本）