Update zip name with datetime

app.py

@@ -1,6 +1,7 @@
 import gradio as gr
 import zipfile
 import os
+import datetime
 
 
 def add_image(camera, gallery):
@@ -13,12 +14,11 @@ def add_image(camera, gallery):
 
 
 def zip_gallery(gallery):
+    new_zip_name = f'{datetime.today()}.zip'
     count = 0
     if not gallery:
         return gr.DownloadButton("Download", visible=False)
-    if os.path.isfile("image_data.zip"):
-        os.remove("image_data.zip")
-    zf = zipfile.ZipFile("image_data.zip", mode="w")
+    zf = zipfile.ZipFile(new_zip_name, mode="w")
     try:
         for path, _ in gallery:
             zf.write(path, f'image_{count}.png',
@@ -29,7 +29,7 @@ def zip_gallery(gallery):
     finally:
         zf.close()
 
-    return gr.DownloadButton("Download", value="image_data.zip", visible=True)
+    return gr.DownloadButton("Download", value=new_zip_name, visible=True)
 
 
 with gr.Blocks(fill_height=True) as demo: