增加
- 创建testInsert.py文件,向学生表中插入一条数据
#encoding=utf-8
import MySQLdb
try:
conn=MySQLdb.connect(host='localhost',port=3306,db='test1',user='root',passwd='mysql',charset='utf8')
cs1=conn.cursor()
count=cs1.execute("insert into students(sname) values('张良')")
print count
conn.commit()
cs1.close()
conn.close()
except Exception,e:
print e.message
修改
- 创建testUpdate.py文件,修改学生表的一条数据
#encoding=utf-8
import MySQLdb
try:
conn=MySQLdb.connect(host='localhost',port=3306,db='test1',user='root',passwd='mysql',charset='utf8')
cs1=conn.cursor()
count=cs1.execute("update students set sname='刘邦' where id=6")
print count
conn.commit()
cs1.close()
conn.close()
except Exception,e:
print e.message
删除
- 创建testDelete.py文件,删除学生表的一条数据
#encoding=utf-8
import MySQLdb
try:
conn=MySQLdb.connect(host='localhost',port=3306,db='test1',user='root',passwd='mysql',charset='utf8')
cs1=conn.cursor()
count=cs1.execute("delete from students where id=6")
print count
conn.commit()
cs1.close()
conn.close()
except Exception,e:
print e.message
SQL语句参数化
- 创建testInsertParam.py文件,向学生表中插入一条数据
#encoding=utf-8
import MySQLdb
try:
conn=MySQLdb.connect(host='localhost',port=3306,db='test1',user='root',passwd='mysql',charset='utf8')
cs1=conn.cursor()
sname=raw_input("请输入学生姓名:")
params=[sname]
count=cs1.execute('insert into students(sname) values(%s)',params)
print count
conn.commit()
cs1.close()
conn.close()
except Exception,e:
print e.message
其它语句
- cursor对象的execute()方法,也可以用于执行create table等语句
- 建议在开发之初,就创建好数据库表结构,不要在这里执行