Revise the error of adding new error message for empty temperature sampling and repetition penalty (3)

app.py

@@ -27,7 +27,7 @@ def single_generation(text,min_length,max_length,temperature,top_k,top_p,num_bea
     error_numbeams_type=TypeError(f"ERROR: number of beams must be an integer not {type(num_beams)}")
     error_topk_type=TypeError(f"ERROR: top k must be an integer not {type(top_k)}")
     error_minmax_type=TypeError(f"ERROR: min length and max length must be an integer not {type(min_length)} and {type(max_length)}")
-    error_empty_temprep=TypeError("ERROR: temperature and repetition penalty cannot be zero!")
+    error_empty_temprep=TypeError("ERROR: temperature and repetition penalty cannot be empty!")
     error_empty_text=ValueError("ERROR: Input Text cannot be empty!")
     error_unknown=TypeError("Unknown Error.")
 
@@ -38,7 +38,7 @@ def single_generation(text,min_length,max_length,temperature,top_k,top_p,num_bea
                     if min_length <= max_length:
                         if temperature > 0:
                             if repetition_penalty >= 1:
-                                if temperature and repetition_penalty !='':
+                                if temperature and repetition_penalty is not None:
                                     result = generator(text,
                                                        min_length=min_length,
                                                        max_length=max_length,
@@ -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 is None:
                                     return error_empty_temprep
                             elif repetition_penalty < 1:
                                 return error_rep