Revise the error of adding new error message for empty temperature sampling and repetition penalty (2)

app.py

@@ -51,7 +51,7 @@ def single_generation(text,min_length,max_length,temperature,top_k,top_p,num_bea
                                                        no_repeat_ngram_size=2,
                                                        num_return_sequences=1)
                                     return result[0]["generated_text"]
-                                elif temperature AND repetition_penalty =='':
+                                elif temperature and repetition_penalty =='':
                                     return error_empty_temprep
                             elif repetition_penalty < 1:
                                 return error_rep