[mypy] Enforcing typing for superset.utils (#9905)

Co-authored-by: John Bodley <john.bodley@airbnb.com>

superset/utils/cache.py

@@ -14,14 +14,14 @@
 # KIND, either express or implied.  See the License for the
 # specific language governing permissions and limitations
 # under the License.
-from typing import Callable, Optional
+from typing import Any, Callable, Optional
 
 from flask import request
 
 from superset.extensions import cache_manager
 
 
-def view_cache_key(*_, **__) -> str:
+def view_cache_key(*args: Any, **kwargs: Any) -> str:  # pylint: disable=unused-argument
     args_hash = hash(frozenset(request.args.items()))
     return "view/{}/{}".format(request.path, args_hash)
 
@@ -45,10 +45,10 @@ def memoized_func(
     returns the caching key.
     """
 
-    def wrap(f):
+    def wrap(f: Callable) -> Callable:
         if cache_manager.tables_cache:
 
-            def wrapped_f(self, *args, **kwargs):
+            def wrapped_f(self: Any, *args: Any, **kwargs: Any) -> Any:
                 if not kwargs.get("cache", True):
                     return f(self, *args, **kwargs)
 
@@ -69,7 +69,7 @@ def memoized_func(
 
         else:
             # noop
-            def wrapped_f(self, *args, **kwargs):
+            def wrapped_f(self: Any, *args: Any, **kwargs: Any) -> Any:
                 return f(self, *args, **kwargs)
 
         return wrapped_f