df_value_list = [] tf_value_list = [] for temp_tuple in result: token_list.append(temp_tuple[0].strip()) df_value_list.append(str(temp_tuple[1])) tf_value_list.append(str(temp_tuple[2])) #join tf and df lists to comma breaked strings token_str = ",".join(token_list) df_str = ",".join(df_value_list) tf_str = ",".join(tf_value_list) print(abstract_str) print(token_str) print(df_str) print(tf_str) data.insertToken(abstract_str, token_str, df_str, tf_str) print("inserted %s tokens into database" % str(len(token_list))) if(len(abstract_list) > 0 ): result = count_main_list(TotalCountList) TotalCountList = [] # join abstract_ids to a comma breaken string abstract_str = ",".join(abstract_list) abstract_list = [] token_list = [] df_value_list = [] tf_value_list = [] for temp_tuple in result: token_list.append(temp_tuple[0].strip()) df_value_list.append(str(temp_tuple[1]))