Add comment for ValueError raise.

gcp/api/server.py

@@ -771,6 +771,8 @@ def to_response(b: osv.Bug):
   else:
     context.service_context.abort(grpc.StatusCode.INVALID_ARGUMENT,
                                   'Invalid query.')
+    # This will never be reached, and is just here for the type checker,
+    # to know that control flow breaks here.
     raise ValueError
 
   # Asynchronously retrieve computed aliases and related ids here

osv/models.py

@@ -20,7 +20,7 @@
 import os
 
 from urllib.parse import urlparse
-from typing import List, Self
+from typing import Self
 
 from google.cloud import ndb
 from google.protobuf import json_format
@@ -89,8 +89,8 @@ def _repo_name(repo_url: str) -> str:
   return name
 
 
-def _maybe_strip_repo_prefixes(versions: List[str],
-                               repo_urls: List[str]) -> str:
+def _maybe_strip_repo_prefixes(versions: list[str],
+                               repo_urls: list[str]) -> str:
   """Try to strip the repo name from tags prior to normalizing.
 
   There are some particularly regex-unfriendly tag names that prefix the