diff --git a/src/easy_tdx/screen/scanner.py b/src/easy_tdx/screen/scanner.py
index 5209403..61d1154 100644
--- a/src/easy_tdx/screen/scanner.py
+++ b/src/easy_tdx/screen/scanner.py
@@ -536,14 +536,14 @@ def _get_strategy_file(strategy_cls: type) -> str:
     for attr_name in ("init", "next", "on_bar", "on_tick"):
         method = strategy_cls.__dict__.get(attr_name)
         if method is not None and hasattr(method, "__code__"):
-            filepath: str = method.__code__.co_filename  # type: ignore[assignment]
+            filepath: str = method.__code__.co_filename
             if filepath and not filepath.startswith("<"):
                 return filepath
 
     # 3. 任意自定义方法
     for attr_val in strategy_cls.__dict__.values():
         if callable(attr_val) and hasattr(attr_val, "__code__"):
-            filepath2: str = attr_val.__code__.co_filename  # type: ignore[assignment]
+            filepath2: str = attr_val.__code__.co_filename
             if filepath2 and not filepath2.startswith("<"):
                 return filepath2