


Detailed explanation of examples of python operations on Mysql database
import MySQLdb#引入mysql模块 class ManagerDB:#创建一个类 def __init__(self): self.db=None self.cursor=None self.connit() def connit(self):#链接数据库 self.db=MySQLdb.connect(host='127.0.0.1',user='root',passwd='123456',db='exam_python') #host主机名 #user用户名 #passwd用户名密码 #db数据库 self.cursor=self.db.cursor() def start(self):#开始 while True: self.menu()#引入菜单栏 xz=input('请输入要选择的编号:') if xz==1: self.student = self.addStudent() if xz==2: self.showStudent() if xz==3: self.delStudent() if xz==4: print '再见' self.db.close() self.cursor.close() break def addStudent(self):#添加 sname=raw_input('请输入要添加学生的姓名') ssex=raw_input('请输入要添加学生的性别') sage=raw_input('请输入要添加学生的年龄') try: sq1="insert into student(name,sex,age)values('%s','%s','%s')"%(sname,ssex,sage) for i in range(10): self.cursor.execute(sq1) self.db.commit() print '成功添加10条信息' except: print '添加失败' self.db.rollback() def showStudent(self):#查看 self.cursor.execute('select * from student') print 'id 姓名 性别 年龄' for i in self.cursor: print i[0],i[1],i[2],i[3] def delStudent(self):#删除 try: self.cursor.execute('delete from student where id=5') self.db.commit() print '成功删除id为5的信息' except: print '删除失败' self.db.rollback() def menu(self): print ''' ---------------------------- 1 添加信息 2 显示数据 3 删除数据 4 退出系统 ---------------------------- ''' if __name__ == '__main__': s=ManagerDB()#实例化对象 s.start()
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