python 3.6 +pyMysql 操作mysql数据库(实例讲解)
发布时间:2020-12-17 07:41:19 所属栏目:Python 来源:网络整理
导读:版本信息:python:3.6 mysql:5.7 pyMysql:0.7.11 ################################################################# #author: 陈月白 #_blogs: http://www.cnblogs.com/chenyuebai/ ################################################################# #
版本信息:python:3.6 mysql:5.7 pyMysql:0.7.11 ################################################################# #author: 陈月白 #_blogs: http://www.cnblogs.com/chenyuebai/ ################################################################# # -*- coding: utf-8 -*- class MysqlTools(): """ 连接mysql 库、表操作 """ def __init__(self,host,dbname,user,passwd,charset="utf8"): self.host = host self.dbname = dbname self.user = user self.passwd = passwd self.charset = charset def connectMysqlDatabase(self): """连接db""" try: #连接db connect = pymysql.connect(host=self.host,user=self.user,passwd=self.passwd,db=self.dbname,charset=self.charset) cursor = connect.cursor() databaseConnectInfo = self.user + "@" + "self.host" + "/" + self.dbname print("INFO:connect database %s success."%databaseConnectInfo) return connect,cursor except: traceback.print_exc() print("ERROR:FUNCTION connectMysqlDatabase connect mysql database failed.") def executeSqlLine(self,sqlLine): """执行单条sql语句""" if sqlLine and isinstance(sqlLine,str): print("INFO:now start connect mysql dababase.") connect,cursor = self.connectMysqlDatabase() executeResult = "" try: #游标执行sql cursor.execute(sqlLine) executeResult = cursor.fetchall() #获取所有执行结果 cursor.close() #关闭游标 connect.commit() #确认提交 print("INFO:execute sql sucess. sqlLine = ",sqlLine) except Exception as e: print("ERROR:execute sql failed.errorInfo =",e) print("ERROR:FUNCTION executeSql execute failed.sqlLine =",sqlLine) connect.rollback() #回滚db return str(e) + " sqlLine = " + sqlLine #断开连接 connect.close() print("INFO:connect closed.n") return executeResult else: print("ERROR:param sqlLine is empty or type is not str.sqlLine = ",sqlLine) def executeBatchSql(self,sqlList): """ 批量执行sql exp: executeBatchSql([sql_1,sql_2,sql_3,...... ]) """ finalResultList = [] if sqlList: for sql in sqlList: executeResult = self.executeSqlLine(sql) finalResultList.append(executeResult) else: print("ERROR:param sqlList is empty.") return finalResultList 测试代码: # -*- coding: utf-8 -*- from my_code.work_tools import WorkTools mysql = WorkTools.MysqlTools("localhost","testdbname","rootuername","passwd") #执行单行sql ret1 = mysql.executeSqlLine("show databases") #批量执行 ret2 = mysql.executeBatchSql([ "show databases","show tables","update students_info set name = '王大花D' where id = 2","select * from students_info","error sql test" #异常sql测试 ]) print("ret1 = ",ret1) print("---------------------") for i in ret2: print(i) 测试表: 执行结果: ret1 = (('information_schema',),('mysql',('performance_schema',('sakila',('sys',('testdb',('world',)) --------------------- (('information_schema',)) (('students_info',) () ((1,'陈月白','male',25,'20176666','1351234'),(2,'王大花D','female',19,'19920816','10086'),(3,'李强新',18,'19941025','10000'),(4,'王鹏',20,'19970405','10010'),(5,'钟齐',22,'19970420','123456789'),(6,'王大花',15,'19981024','12345678')) (1064,"You have an error in your SQL syntax; check the manual that corresponds to your MySQL server version for the right syntax to use near 'error sql test' at line 1") sqlLine = error sql test 以上这篇python 3.6 +pyMysql 操作mysql数据库(实例讲解)就是小编分享给大家的全部内容了,希望能给大家一个参考,也希望大家多多支持编程小技巧。 (编辑:李大同) 【声明】本站内容均来自网络,其相关言论仅代表作者个人观点,不代表本站立场。若无意侵犯到您的权利,请及时与联系站长删除相关内容! |