本文实例讲述了python使用mysqldb访问mysql数据库的方法。分享给大家供大家参考。具体如下：
#!/usr/bin/python
import mysqldb
def doinsert(cursor,db):
#insert
# prepare sql query to insert a record into the database.
sql = “update employee set age = age+1 where sex = ‘%c'” %(‘m’)
try:
cursor.execute(sql)
db.commit()
except:
db.rollback()
def do_query(cursor,db):
sql = “select * from employee \
where income > ‘%d'” % (1000)
try:
# execute the sql command
cursor.execute(sql)
# fetch all the rows in a list of lists.
results = cursor.fetchall()
print ‘resuts’,cursor.rowcount
for row in results:
fname = row[0]
lname = row[1]
age = row[2]
sex = row[3]
income = row[4]
# now print fetched result
print “fname=%s,lname=%s,age=%d,sex=%s,income=%d” % \
(fname, lname, age, sex, income )
except:
print “error: unable to fecth data”
def do_delete(cursor,db):
sql = ‘delete from employee where age > {}’.format(20)
try:
cursor.execute(sql)
db.commit()
except:
db.rollback()
def do_insert(cursor,db,firstname,lastname,age,sex,income):
sql = “insert into employee(first_name, \
last_name, age, sex, income) \
values (‘%s’, ‘%s’, ‘%d’, ‘%c’, ‘%d’ )” % \
(firstname,lastname,age,sex,income)
try:
cursor.execute(sql)
db.commit()
except:
db.rollback()
# open database connection
# change this to your mysql account
#connect(server,username,password,db_name)
db = mysqldb.connect(“localhost”,”hunter”,”hunter”,”pydb” )
# prepare a cursor object using cursor() method
cursor = db.cursor()
do_query(cursor,db)
doinsert(cursor,db)
do_query(cursor,db)
do_delete(cursor,db)
do_query(cursor,db)
do_insert(cursor,db,’hunter’,’xue’,22,’m’,2000)
do_insert(cursor,db,’mary’,’yang’,22,’f’,5555)
do_insert(cursor,db,’zhang’,’xue’,32,’m’,5000)
do_insert(cursor,db,’hunter’,’xue’,22,’m’,333)
do_query(cursor,db)
# disconnect from server
db.close()
希望本文所述对大家的python程序设计有所帮助。