Update app.py

app.py

@@ -58,7 +58,7 @@ def verify_demo(repo_id):
     if len(split_repo_id) > 2:
         repo_id = "/".join(split_repo_id[-2:])
 
-    if user_name in all_results["username"]:
+    if (all_results["username"] == user_name).any():
         raise gr.Error(f"Username {user_name} has already passed the assessment!")
 
     try: