Update app.py

app.py

@@ -20,10 +20,10 @@ model = AutoModelForCausalLM.from_pretrained("openai-community/gpt2", trust_remo
 
 # Karaktertisztító függvény
 def clean_text(text):
-    printable = set(string.printable)
-    cleaned_text = ''.join(filter(lambda x: x in printable, text))
+    cleaned_text = ''.join(filter(lambda x: x in string.printable, text))
     return cleaned_text
 
+
 # Dokumentumfeldolgozó függvény
 def process_document(document_file):
     document_text = ""