处理中..................
python3 程序报错
在执行一段业务代码时,出现 “
处理中..................
” 的错误提示。经过排查,发现代码中的数据库操作部分有问题,具体代码如下:
import requests
import time
import json
import pymysql
mydb = pymysql.connect(
host="92.68.40.12", port=3306,
user="root",
password="iss_root",
database="dynamic_premium_db"
)
mycursor = mydb.cursor()
def excute_sql_db(stratagy_id, city_id, app_name, total_price, over_flow_price, date_time):
sql = "insert into over_flow_price(straragy_id,city_id,app_name,total_price,over_flow_price,time_stamp)values('%s','%s','%s','%s','%s','%s')" % (stratagy_id, city_id, app_name, total_price, over_flow_price, date_time)
mycursor.execute(sql) # 报错行解决方案:
立即学习“Python免费学习笔记(深入)”;
通过仔细分析代码,发现代码中缺少对数据库事务的处理。在数据库操作中,特别是涉及到多个表的操作时,需要使用事务来保证数据的完整性。
修改后的代码如下:
def excute_sql_db(stratagy_id, city_id, app_name, total_price, over_flow_price, date_time):
sql = "INSERT INTO over_flow_price(straragy_id,city_id,app_name,total_price,over_flow_price,time_stamp)VALUES('%s','%s','%s','%s','%s','%s')" % (stratagy_id, city_id, app_name, total_price, over_flow_price, date_time)
try:
mycursor.execute(sql)
mydb.commit() # 提交事务
print('插入成功')
except Exception as e:
mydb.rollback() # 回滚事务
print('err: ' + sql)
print(e)










