change test file

tensnsorflow/test.py

@@ -61,7 +61,7 @@ if __name__ == '__main__':
               "concat('r',recover_time) from jerry_test.train_Knowledge_network_data"
         db = pymysql.connect(host='172.16.40.158', port=4000, user='root', passwd='3SYz54LS9#^9sBvC', db='jerry_test')
         df = con_sql(db, sql)
-        df.rename(columns={0: "level2_id", 1: "treatment_method",2:"price_min",3:"price_max",4:"treatment_time",
+        df = df.rename(columns={0: "level2_id", 1: "treatment_method",2:"price_min",3:"price_max",4:"treatment_time",
                            5:"maintain_time",6:"recover_time"})
         print(df.head(6))
         host = '172.16.40.158'