【python练习册】1.3 将1.2题生成的n个激活码保存到mysql关系型数据库中

 1 mysql -u root -p                     以root权限登录，默认密码为空
 2 show databases;            　　　　　　列出所有数据库
 3 drop table if exists hst;        　　 如果存在表hst则先删除
 4 create database hst;                 创建数据库
 5 use hst;                    　　　　　 进入数据库
 6 create table student(
 7 id int auto_increment primary key,
 8 name varchar(50),
 9 sex varchar(20),
10 date varchar(50),
11 content varchar(100)
12 )default charset=utf8;        　　　　创建表
13 drop table student;            　　　 删除表
14 describe student;        　　　　　　　查看表结构(desc student;)
15 
16 insert into student values(null,‘aa‘,‘男‘,‘1988-10-12‘,‘.....‘);    插入数据
17 select * from student;
18 select id,name from student;         　　　　查询id，name列
19 
20 update student set sex=‘男‘ where id=4;    修改id为4的行性别为男
21 
22 delete from student where id=5;        　　删除id为5的行
23 
24 select * from student where date>‘1988-1-2‘ and date<‘1988-12-1‘;    and、or
25 
26 select * from student where date between ‘1988-1-2‘ and ‘1988-12-1‘;    between            

1 import pymysql
2 db = pymysql.connect("localhost", "root", "", "test")  连接test数据库
3 cursor=db.cursor()
4 cursor.execute(sql语句)
5 db.commit()
6 db.close()

 1 #!/user/bin/python
 2 #-*-coding:UTF-8 *-*
 3 
 4 import pymysql
 5 import random,string,uuid
 6 
 7 def generateN(len, count, cursor, db, database):
 8     getChars = lambda: string.ascii_letters+string.digits
 9     generate = lambda len: "".join(random.sample(getChars(), len))
10     for i in range(count):
11         sql = "insert into {0} (id,value) values ({1},‘{2}‘)".format(database,"null", generate(len))
12         cursor.execute(sql)
13         db.commit()
14 
15 #generateN(10, 20)
16 db = pymysql.connect("localhost", "root", "", "hst")
17 cursor = db.cursor()
18 cursor.execute("drop table if exists generateCodes")
19 sql = "create table generateCodes(id int auto_increment primary key, value varchar(50))"
20 cursor.execute(sql)
21 cursor.execute("show tables");
22 generateN(10, 20, cursor, db, "generateCodes")
23 db.close()

1 select * from generateCodes;