Update app.py

app.py

@@ -103,8 +103,8 @@ class WaifuDiffusionInterrogator:
         imgByteArr = io.BytesIO()
         image.save(imgByteArr, format="png")
         imgByteArr = imgByteArr.getvalue()
-        if imgByteArr in cache:
-            return cache[imgByteArr]
+        if imgByteArr in self.cache:
+            return self.cache[imgByteArr]
 
         full_tags = self._calculation(image)
 
@@ -114,8 +114,8 @@ class WaifuDiffusionInterrogator:
         # rest are regular tags
         tags = dict(full_tags[full_tags['category'] != 9][['name', 'confidence']].values)
         self.cache[imgByteArr] = (ratings, tags)
-        if len(cache) > 25:
-            cache.popitem(last=False)
+        if len(self.cache) > 25:
+            self.cache.popitem(last=False)
 
         return ratings, tags