Update app.py

app.py

@@ -1,5 +1,6 @@
 import zipfile
 import random
+from PIL import Image
 
 import pandas as pd
 import numpy as np
@@ -63,7 +64,7 @@ if txt is not None:
         with col1:
             btn = st.download_button(
             label="Download all images by ResNet50",
-            data=list_images,
+            data= [Image.open(i) for i in list_images],
             file_name=list_images,
             mime="image/png"
             )