这篇文章主要介绍了pymysql的简单封装代码实例,文中通过示例代码介绍的非常详细，对大家的学习或者工作具有一定的参考学习价值,需要的朋友可以参考下
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#coding=utf-8 #!/usr/bin/pythonimport pymysqlclass MYSQL: """ 对pymysql的简单封装 """ def __init__(self,host,user,pwd,db): self.host = host self.user = user self.pwd = pwd self.db = db def __GetConnect(self): """ 得到连接信息 返回: conn.cursor() """ if not self.db: raise(NameError,"没有设置数据库信息") self.conn = pymysql.connect(host=self.host,user=self.user,password=self.pwd,database=self.db,charset="utf8") cur = self.conn.cursor() if not cur: raise(NameError,"连接数据库失败") else: return cur def ExecQuery(self,sql): """ 执行查询语句 返回的是一个包含tuple的list，list的元素是记录行，tuple的元素是每行记录的字段 调用示例： ms = MYSQL(host="localhost",user="sa",pwd="123456",db="PythonWeiboStatistics") resList = ms.ExecQuery("SELECT id,NickName FROM WeiBoUser") for (id,NickName) in resList: print str(id),NickName """ cur = self.__GetConnect() cur.execute(sql) resList = cur.fetchall() #查询完毕后必须关闭连接 self.conn.close() return resList def ExecNonQuery(self,sql): """ 执行非查询语句 调用示例： cur = self.__GetConnect() cur.execute(sql) self.conn.commit() self.conn.close() """ cur = self.__GetConnect() cur.execute(sql) self.conn.commit() self.conn.close()def main(): mysql = MYSQL(host="192.168.163.36",user="wisdomhr",pwd="wisdomhr",db="WISDOMHR") resList = mysql.ExecQuery("SELECT CITY FROM RES_SCHOOL") for inst in resList: print(inst)if __name__ == '__main__': main() |
用法如下:
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#!/usr/bin/python#version 3.4import wispymysqlmysql = wispymysql.MYSQL(host="192.168.163.36",user="wisdomhr",pwd="wisdomhr",db="WISDOMHR")selectsql = "SELECT ID, CITY FROM RES_SCHOOL WHERE CITY LIKE '%\r\n%'"result = mysql.ExecQuery(selectsql)for (dbid, city) in result: rightcity = city.replace('\r\n','') updatesql= "UPDATE RES_SCHOOL SET CITY = '" + rightcity + "' WHERE ID = " + str(dbid) print(updatesql) mysql.ExecNonQuery(updatesql) |
以上就是本文的全部内容，希望对大家的学习有所帮助，也希望大家多多支持服务器之家。
原文链接：https://www.cnblogs.com/wardensky/p/4783010.html
