Update aio.py

specify default encoding as "utf-8"

aio.py

@@ -59,7 +59,7 @@ class Aio(datasets.GeneratorBasedBuilder):
     def _generate_examples(self, filepath: str) -> Tuple[str, Dict[str, Any]]:
         logger.info(f"generating examples from {filepath}")
         _key = 0
-        with open(filepath, "r") as f:
+        with open(filepath, "r", encoding="utf-8") as f:
 
             for line in f:
                 line = line.strip()