python操作MySQL資料庫

標籤：

MySQLdb操作的MYSQL資料庫。先來一個簡單的例子:

 1 import MySQLdb 2   3 try: 4     conn=MySQLdb.connect(host=‘localhost‘,user=‘root‘,passwd=‘root‘,db=‘test‘,port=3306) 5     cur=conn.cursor() 6     cur.execute(‘select * from user‘) 7     cur.close() 8     conn.close() 9 except MySQLdb.Error,e:10      print "Mysql Error %d: %s" % (e.args[0], e.args[1])

插入資料，批量插入資料，更新資料!

 

 1 import MySQLdb 2   3 try: 4     conn=MySQLdb.connect(host=‘localhost‘,user=‘root‘,passwd=‘root‘,port=3306) 5     cur=conn.cursor() 6       7     cur.execute(‘create database if not exists python‘) 8     conn.select_db(‘python‘) 9     cur.execute(‘create table test(id int,info varchar(20))‘)10      11     value=[1,‘hi rollen‘]12     cur.execute(‘insert into test values(%s,%s)‘,value)13      14     values=[]15     for i in range(20):16         values.append((i,‘hi rollen‘+str(i)))17          18     cur.executemany(‘insert into test values(%s,%s)‘,values)19  20     cur.execute(‘update test set info="I am rollen" where id=3‘)21  22     conn.commit()23     cur.close()24     conn.close()25  26 except MySQLdb.Error,e:27      print "Mysql Error %d: %s" % (e.args[0], e.args[1])

請注意一定要有conn.commit()這句來提交事務，要不然不能真正的插入資料。

 

 1 import MySQLdb 2   3 try: 4     conn=MySQLdb.connect(host=‘localhost‘,user=‘root‘,passwd=‘root‘,port=3306,charset=‘utf8‘) 5     cur=conn.cursor() 6       7     conn.select_db(‘python‘) 8   9     count=cur.execute(‘select * from test‘)10     print ‘there has %s rows record‘ % count11  12     result=cur.fetchone()13     print result14     print ‘ID: %s info %s‘ % result15  16     results=cur.fetchmany(5)17     for r in results:18         print r19  20     print ‘==‘*1021     cur.scroll(0,mode=‘absolute‘)22  23     results=cur.fetchall()24     for r in results:25         print r[1]26      27  28     conn.commit()29     cur.close()30     conn.close()31  32 except MySQLdb.Error,e:33      print "Mysql Error %d: %s" % (e.args[0], e.args[1])

 

python操作MySQL資料庫