Update app.py

app.py

@@ -164,6 +164,11 @@ def remove_references(text):
     cleaned_text = re.sub(pattern, '', text)
     return cleaned_text
 
+def clean_text(text):
+    # Remove special characters, keeping only letters, numbers, and spaces
+    cleaned_text = re.sub(r'[^a-zA-Z0-9\s]', '', text)
+    return cleaned_text
+
 def evaluate_content(user_input):
     vectara_response = query_vectara(user_input)
     vectara_response_json = json.loads(vectara_response)