Update app.py

app.py

@@ -531,7 +531,7 @@ def main():
   #st.write(dataset)
   
   # Write JSON to file
-  with open(DATA_FILE, 'w') as f: #w+
+  with open(DATA_FILE, 'a') as f: #w+
     json.dump(json_data, f)
     #repo.push_to_hub()
   commit_url = repo.push_to_hub()