Update app.py

app.py

@@ -143,7 +143,7 @@ questions = {parsed_questions}
 
 def eval_quiz(name, *answers):
     """
-    Evaluates the student's answers against the stored hashes and generates a result.
+    Evaluates the student's answers and generates a certificate only if the score is 80% or higher.
     """
     if not name.strip():
         name = "Anonymous"
@@ -152,9 +152,20 @@ def eval_quiz(name, *answers):
         if ans and hashlib.sha256(str(ans).lower().strip().encode()).hexdigest() == questions[i]["answer_hash"]:
             score += 1
     
-    cert_path = generate_certificate(name, score, len(questions), instructor="{instructor}")
+    total_questions = len(questions)
+    passing_threshold = 0.8
     
-    return f"Hi {{name}}, your score is: {{score}} / {{len(questions)}}", cert_path
+    result_message = f"Hi {{name}}, your score is: {{score}} / {{total_questions}}."
+    cert_path = None # Default to no certificate
+
+    # Check if the score meets the passing threshold
+    if total_questions > 0 and (score / total_questions) >= passing_threshold:
+        cert_path = generate_certificate(name, score, total_questions, instructor="{instructor}")
+        result_message += " Congratulations, you passed and earned a certificate!"
+    else:
+        result_message += " A score of 80% is required to receive a certificate."
+
+    return result_message, cert_path
 
 # Gradio interface for the student
 with gr.Blocks(theme=gr.themes.Soft()) as app: