Use a ResourceManager to find assets

squirrelbattle/resources.py

@@ -0,0 +1,13 @@
+from pathlib import Path
+
+
+class ResourceManager:
+    """
+    The ResourceManager loads resources at their right place,
+    and stores files in config directory.
+    """
+    BASE_DIR = Path(__file__).resolve().parent / 'assets'
+
+    @classmethod
+    def get_asset_path(cls, filename: str) -> str:
+        return str(cls.BASE_DIR / filename)