Fix mypy errors after upgrading to version 1.12 (#1040)

lib/config.py

@@ -357,7 +357,7 @@ def has_valid_list(name: str) -> bool:
     for db_name, valid_selections in selection_choices.items():
         is_online = db_name != "polyglot"
         db_section = (CONFIG["engine"].get("online_moves") or {}) if is_online else CONFIG["engine"]
-        db_config = db_section.get(db_name)
+        db_config = db_section.get(db_name) or {}
         select_key = "selection" if db_name == "polyglot" else "move_quality"
         selection = db_config.get(select_key)
         select = f"{'online_moves:' if is_online else ''}{db_name}:{select_key}"

lib/lichess_bot.py

@@ -36,7 +36,7 @@
 from http.client import RemoteDisconnected
 from queue import Empty
 from multiprocessing.pool import Pool
-from typing import Optional, Union, TypedDict
+from typing import Optional, Union, TypedDict, cast
 from types import FrameType
 MULTIPROCESSING_LIST_TYPE = MutableSequence[model.Challenge]
 LICHESS_TYPE = Union[lichess.Lichess, test_bot.lichess.Lichess]
@@ -837,7 +837,7 @@ def print_move_number(board: chess.Board) -> None:
 def next_update(lines: Iterator[bytes]) -> GameEventType:
     """Get the next game state."""
     binary_chunk = next(lines)
-    upd: GameEventType = json.loads(binary_chunk.decode("utf-8")) if binary_chunk else {}
+    upd = cast(GameEventType, json.loads(binary_chunk.decode("utf-8"))) if binary_chunk else {}
     if upd:
         logger.debug(f"Game state: {upd}")
     return upd