mysql與python的互動

conn = connect(引數列表)

cursor1=conn.cursor()

mode表示移動的方式

mode的預設值為relative，表示基於當前行移動到value,value為正則向下移動，value為負則向上移動

mode的值為absolute，表示基於第一條資料的位置，第一條資料位置為零

#encoding = utf-8

import mysqldb
try:
conn=mysqldb.conect(host='localhost',port=3306,db='test1',user='root',passwd='mysql',charset='utf-8')
cs1=conn.cursor()
count=cs1.execute("insert into students(sname) values('張亮')")
print(count)
conn.commit()
cs1.close()
except exception, e:
print(e.message)

#encoding = utf-8

import mysqldb
try:
conn=mysqldb.conect(host='localhost',port=3306,db='test1',user='root',passwd='mysql',charset='utf-8')
cs1=conn.cursor()
count=cs1.execute("update students set sname='楊國富'where id=6")
print(count)
conn.commit()
cs1.close()
except exception, e:
print(e.message)

#encoding = utf-8

import mysqldb
try:
conn=mysqldb.conect(host='localhost',port=3306,db='test1',user='root',passwd='mysql',charset='utf-8')
cs1=conn.cursor()
count=cs1.execute("delete from students where id=6")
print(count)
conn.commit()
cs1.close()
except exception, e:
print(e.message)

#encoding= utf-8

import mysqldb
try:
conn = mysqldb.connect(host='localhost',port=3306,db='test1',user='root',passwd='mysql',charset='utf-8')
cs1=conn.cursor()
sname=input("請輸入學生姓名：")
params=[sname]
count=cs1.excute('insert into students(sname)value(%s)',params)
print(count)
cs1.close()
conn.close()
except exception,e:
print e.message

#encoding=utf8

import mysqldb
try:
conn=mysqldb.connect(host='localhost',port=3306,db='test1',user='root',passwd='mysql',charset='utf8')
cur=conn.sursor()
cur.excude('select * from students where id=7')
result=cur.fetchone()
print(result)
cur.close()
conn.close()
except exception,e:
print(e.message)

#encoding=utf8

import mysqldb
try:
conn=mysqldb.connect(host='localhost',port=3306,db='test1',user='root',passwd='mysql',charset='utf8')
cur=conn.sursor()
cur.excude('select * from students where id=7')
result=cur.fetchall()
print(result)
cur.close()
conn.close()
except exception,e:
print(e.message)

#encoding=utf8

import mysqldb
class
mysqlhelper
():def
__init__
(self,host,port,db,user,passwd,charset='utf8'):
self.host=host
self.port=port
self.db=db
self.user=user
self.passwd=passwd
self.charset = charset
defconnect
(self):
self.conn=mysqldb.connect(host=self.host，port=self.port,db=self.db,user=self.user,passwd=self.passwd,charset=self.charset,)
self.cursor=self.conn.cursor()
defclose
(self):
self.cursor.close()
self.conn.close()
defget_one
(self,sql,params=()):
result=none
try:
self.connect()
self.cursor.excute(sql,params)
result = self.cursor.fetchone()
self.close()
except exception,e:
print(e.message)
return result
defget_all
(self,sql,params=()):
list=()
try:
self.connect()
self.cursor.execute(sql,params)
list=self.cursor.fetchall()
self.close()
except exception,e:
print(e.message)
return list
definsert
(self,sql,params=()):
return self.__edit(sql,params)
defupdate
(self,sql,params=()):
return self.__edit(sql,params)
defdelete
(self,sql,params=()):
return self.__edit(sql,params)
def__edit
(self,sql,params):
count=0
try:
self.connect()
count=self.cursor.execute(sql,params)
self.conn.commit()
self.close()
except exception,e:
print(e.message)
return count

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