python3创建表及表数据；

创建表，参考代码如下；

import pymysql
test=pymysql.connect('localhost','root','root','test1225')
curs=test.cursor()
curs.execute('drop table if exists xixi')
sql="""
create table `xixi`(`names` varchar(255) default null,
`age` int(3) default null,
`income` decimal(8,2) default 0)
ENGINE=InnoDB DEFAULT charset=utf8;
"""
curs.execute(sql)
test.close()

 

 

 

 

 

 

 向表中添加数据；

方式一、

import pymysql
test=pymysql.connect('localhost','root','root','test1225')
curs=test.cursor()
sql="""
insert into `xixi` values('xiaohua',34,888.3)
"""
curs.execute(sql)
test.commit()
test.close()
方式二、#从外部传入参数

import pymysql
test=pymysql.connect('localhost','root','root','test1225')
curs=test.cursor()
names='张的美'
age=18
curs.execute('insert into xixi(names,age) values("%s",%d)'%(names,age))
test.commit()
test.close()
方式三、错误回滚

import pymysql
test=pymysql.connect('localhost','root','root','test1225')
curs=test.cursor()
names='张的美'
age=18
money=888
try:
    curs.execute('insert into xixi values("%s",%d,%f)' % (names, age, money))
    test.commit()
except:
    test.rollback()
    print('执行错误，并且已回滚')
test.close()