python3.4用函数操作mysql5.7数据库

本文实例为大家分享了python3.4函数操作mysql数据库的具体代码，供大家参考，具体内容如下

#!/usr/bin/env python
# -*- coding:utf-8 -*-
# __author__ = "blzhu"
"""
python study
Date：2017
"""
# -*- coding: utf-8 -*-
__author__ = 'djstava@gmail.com'

import logging
import pymysql

class MySQLCommand(object):
def __init__(self, host, port, user, passwd, db, table, charset):
self.host = host
self.port = port
self.user = user
self.password = passwd
self.db = db
self.table = table
self.charset = charset

def connectMysql(self):
try:
self.conn = pymysql.connect(host=self.host, port=self.port, user=self.user, passwd=self.password,
  db=self.db, charset=self.charset)
self.cursor = self.conn.cursor()
print('connect ' + self.table + ' correctly!')
except:
print('connect mysql error.')

def queryMysql(self):
sql = "SELECT * FROM " + self.table

try:
print("query Mysql:")
self.cursor.execute(sql)
#row = self.cursor.fetchone()
for d in self.cursor:
print(str(d[0]), str(d[1]), str(d[2]))
# print(row)

except:
print(sql + ' execute failed.')

def insertMysql(self, id, name, sex):
sql = "INSERT INTO " + self.table + " VALUES(" + id + "," + "'" + name + "'," + "'" + sex + "')"
try:
print("insert Mysql:")
self.cursor.execute(sql)
print(sql)
except:
print("insert failed.")

def updateMysqlSN(self, name, sex):
sql = "UPDATE " + self.table + " SET sex='" + sex + "'" + " WHERE name='" + name + "'"
print("update sn:" + sql)

try:
self.cursor.execute(sql)
self.conn.commit()
except:
self.conn.rollback()

def deleteMysql(self, id): # 删除
sql = "DELETE FROM ％s WHERE id='％s'" ％ (self.table,id)
#"delete from student where zid='％s'" ％ (id)
try:
self.cursor.execute(sql)
print(sql)
self.conn.commit()
print("delete the " + id + "th row successfully!")
except:
print("delete failed!")
self.conn.rollback()

def closeMysql(self):
self.conn.commit() # 不执行此句，所作的操作不会写入到数据库中
self.cursor.close()
self.conn.close()

if __name__ == '__main__':
zblmysql = MySQLCommand(host='localhost', user='root', passwd='root', db='zbltest1', port=3306, table='student2',
 charset='utf8')
zblmysql.connectMysql()
zblmysql.queryMysql()
zblmysql.insertMysql('5', 'zbl5', 'man')
zblmysql.queryMysql()
zblmysql.deleteMysql(id=2)
zblmysql.queryMysql()
zblmysql.updateMysqlSN(name='zbl5',sex='woman')
zblmysql.queryMysql()
zblmysql.closeMysql()

参考：python3操作mysql数据库的方法