Fix: [TW] SOS chapter 10 is OCRed as 0

module/ocr/ocr.py

@@ -43,13 +43,17 @@ class Ocr:
     def cnocr(self) -> "AlOcr":
         return OCR_MODEL.__getattribute__(self.lang)
 
-    @cached_property
+    @property
     def buttons(self):
         buttons = self._buttons
         buttons = buttons if isinstance(buttons, list) else [buttons]
         buttons = [button.area if isinstance(button, Button) else button for button in buttons]
         return buttons
 
+    @buttons.setter
+    def buttons(self, value):
+        self._buttons = value
+
     def pre_process(self, image):
         """
         Args: