diff --git a/ppocr/data/imaug/operators.py b/ppocr/data/imaug/operators.py
index 728314aade..3e02e10ff7 100644
--- a/ppocr/data/imaug/operators.py
+++ b/ppocr/data/imaug/operators.py
@@ -38,9 +38,7 @@ def __init__(
 
     def __call__(self, data):
         img = data["image"]
-        assert (
-            type(img) is bytes and len(img) > 0
-        ), "invalid input 'img' in DecodeImage"
+        assert type(img) is bytes and len(img) > 0, "invalid input 'img' in DecodeImage"
         img = np.frombuffer(img, dtype="uint8")
         if self.ignore_orientation:
             img = cv2.imdecode(img, cv2.IMREAD_IGNORE_ORIENTATION | cv2.IMREAD_COLOR)