Update app.py

app.py

@@ -10,10 +10,21 @@ set_environment()
 from tools import upload_file_to_bucket
 from graph import generate_graph
 
+import re 
+
 # (Keep Constants as is)
 # --- Constants ---
 DEFAULT_API_URL = "https://agents-course-unit4-scoring.hf.space"
 
+mport requests, logging, os
+TEST_URL = "https://www.youtube.com/watch?v=L1vXCYZAYYM"
+def test_youtube():
+    try:
+        r = requests.head(TEST_URL, timeout=8, allow_redirects=True)
+        logging.warning("YT status %s %s", r.status_code, r.url)
+    except Exception as e:
+        logging.error("YT check failed: %s", e)
+
 def run_and_submit_all( profile: gr.OAuthProfile | None):
     """
     Fetches all questions, runs the BasicAgent on them, submits all answers,
@@ -196,6 +207,7 @@ with gr.Blocks() as demo:
     )
 
 if __name__ == "__main__":
+    test_youtube()
     print("\n" + "-"*30 + " App Starting " + "-"*30)
     # Check for SPACE_HOST and SPACE_ID at startup for information
     space_host_startup = os.getenv("SPACE_HOST")