python链接sqlite数据库讲解
来源:岁月联盟
时间:2010-10-11
建立数据库:
XP版本:sqlite3.exe test.db
Linux版本:./sqlite3.bin test.db
2、然后去找个pysqlite,这是python访问sqlite的接口,地址在这里 : http://initd.org/tracker/pysqlite
目前针对不同的python版本,pysqlite有两个版本:2.3和2.4,请根据自己的python版本选用.
3、然后就可以打开自己喜欢的编辑器,写一段测试代码了.
4、中文处理要注意的是sqlite默认以utf-8编码存储.
5、另外要注意sqlite仅支持文件锁,换句话说,它对并发的处理并不好,不推荐在网络环境使用,适合单机环境;
import pysqlite2.dbapi2 as sqlite
def runTest():
cx = sqlite.connect(test.db)
cu = cx.cursor()
#create
cu.execute(create table catalog(
id integer primary key,
pid integer,
name varchar(10) unique
))
#insert
cu.execute(insert into catalog values(0,0,"张小山"))
cu.execute(insert into catalog values(1,0,"hello"))
cx.commit()
#select
cu.execute(select * from catalog)
print 1:,
print cu.rowcount
rs = cu.fetchmany(1)
print 2:,
print rs
rs = cu.fetchall()
print 3:,
print rs
#delete
cu.execute(delete from catalog where id = 1 )
cx.commit()
cu.execute(select * from catalog)
rs = cu.fetchall()
print 4:,
print rs
#select count
cu.execute("select count(*) from catalog")
rs = cu.fetchone()
print 5:,
print rs
cu.execute("select * from catalog")
cu.execute(drop table catalog)
if __name__ == __main__:
runTest()