Python学习笔记10-Python MysqlHelper ，MySql 辅助类

自己写了一个MySql辅助类，有需要的拿走：

#--encoding:utf-8--
#
import MySQLdb

class MySQLHelper:
myVersion=0.1
def __init__(self,host,user,password,charset="utf8"):
self.host=host
self.user=user
self.password=password
self.charset=charset
try:
self.conn=MySQLdb.connect(host=self.host,user=self.user,passwd=self.password)
self.conn.set_character_set(self.charset)
self.cursor=self.conn.cursor()
except MySQLdb.Error as e:
print ('MySql Error : %d %s' %(e.args[0],e.args[1]))

def setDB(self,db):
try:
self.conn.select_db(db)
except MySQLdb.Error as e:
print ('MySql Error : %d %s' %(e.args[0],e.args[1]))

def query(self,sql):
try:
rows=self.cursor.execute(sql)
return rows;
except MySQLdb.Error as e:
print('MySql Error: %s SQL: %s'%(e,sql))

def queryOnlyRow(self,sql):
try:
self.query(sql)
result=self.cursor.fetchone()
desc=self.cursor.description
row={}
for i in range(0,len(result)):
row[desc[i][0]]=result[i]
return row;
except MySQLdb.Error as e:
print('MySql Error: %s SQL: %s'%(e,sql))

def queryAll(self,sql):
try:
self.query(sql)
result=self.cursor.fetchall()
desc=self.cursor.description
rows=[]
for cloumn in result:
row={}
for i in range(0,len(cloumn)):
row[desc[i][0]]=cloumn[i]
rows.append(row)
return rows;
except MySQLdb.Error as e:
print('MySql Error: %s SQL: %s'%(e,sql))

def insert(self,tableName,pData):
try:
newData={}
for key in pData:
newData[key]="'"+pData[key]+"'"
key=','.join(newData.keys())
value=','.join(newData.values())
sql="insert into "+tableName+"("+key+") values("+value+")"
self.query("set names 'utf8'")
self.query(sql)
self.commit()
except MySQLdb.Error as e:
self.conn.rollback()
print('MySql Error: %s %s'%(e.args[0],e.args[1]))
finally:
self.close()

def update(self,tableName,pData,whereData):
try:
newData=[]
keys=pData.keys()
for i in keys:
item="%s=%s"%(i,"'"+pData[i]+"'")
newData.append(item)
items=','.join(newData)
newData2=[]
keys=whereData.keys()
for i in keys:
item="%s=%s"%(i,"'"+whereData[i]+"'")
newData2.append(item)
whereItems=" AND ".join(newData2)
sql="update "+tableName+" set "+items+" where "+whereItems
self.query("set names 'utf8'")
self.query(sql)
self.commit()
except MySQLdb.Error as e:
self.conn.rollback()
print('MySql Error: %s %s'%(e.args[0],e.args[1]))
finally:
self.close()

def getLastInsertRowId(self):
return self.cursor.lastrowid

def getRowCount(self):
return self.cursor.rowcount

def commit(self):
self.conn.commit()

def close(self):
self.cursor.close()
self.conn.close()
测试 代码：
#--encoding:utf-8--
#
from MySQLHelper import *

helper=MySQLHelper("localhost","root","")
helper.setDB("employee")
sql="select * from users"
rows=helper.queryAll(sql)
for row in rows:
print row['id'],row['name'].decode("utf-8"),row['birthday']

# dataSource={"name":"汤姆克路斯".decode("gbk").encode("utf-8"),"birthday":"1992-03-12"}
# helper.insert("users", dataSource)
# print helper.getLastInsertRowId()

# pData={"birthday":"2005-05-05 18:32:23"}
# whereData={"name":"Jack Tang"}
# helper.update("users", pData, whereData)