python设置windows桌面壁纸的实现代码

importbase64
importurllib
importurllib2
importtime
importre
importsys

classSendRequest:
 """
 网页请求增强类
 SendRequest("http://xxx.com",data=dict,type="POST",auth="base",user="xxx",password="xxx")
 """
 def__init__(self,url,data=None,method="GET",auth=None,user=None,password=None,cookie=None,**header):
   """
   url:请求的url，不能为空
   date:需要post的内容，必须是字典
   method:Get或者Post，默认为Get
   auth:"base"或者"cookie"
   user:用于base认证的用户名
   password:用于base认证的密码
   cookie:请求附带的cookie，一般用于登录后的认证
   其他头信息:
   e.g.referer="www.sina.com.cn"
   """

   self.url=url
   self.data=data
   self.method=method
   self.auth=auth
   self.user=user
   self.password=password
   self.cookie=cookie

   if"referer"inheader:
       self.referer=header[referer]
   else:
       self.referer=None

   if"user-agent"inheader:
       self.user_agent=header[user-agent]
   else:
##self.user_agent="Mozilla/5.0(WindowsNT5.1;rv:8.0)Gecko/20100101Firefox/8.0"
       self.user_agent="Mozilla/5.0(iPhone;U;CPUiPhoneOS3_0likeMacOSX;en-us)AppleWebKit/528.18(KHTML,likeGecko)Version/4.0Mobile/7A341Safari/528.16"

   self.__SetupRequest()
   self.__SendRequest()

 def__SetupRequest(self):

   ifself.urlisNoneorself.url=="":
       raise"url不能为空!"

   #访问方式设置
   ifself.method.lower()=="post":
       self.Req=urllib2.Request(self.url,urllib.urlencode(self.data))

   elifself.method.lower()=="get":
       ifself.data==None:
           self.Req=urllib2.Request(self.url)
       else:
           self.Req=urllib2.Request(self.url+"?"+urllib.urlencode(self.data))

   #设置认证信息
   ifself.auth=="base":
       ifself.user==Noneorself.password==None:
           raise"Theuserorpasswordwasnotgiven!"
       else:
           auth_info=base64.encodestring(self.user+":"+self.password).replace("\n","")
           auth_info="Basic"+auth_info
           self.Req.add_header("Authorization",auth_info)

   elifself.auth=="cookie":
       ifself.cookie==None:
           raise"Thecookiewasnotgiven!"
       else:
           self.Req.add_header("Cookie",self.cookie)

   ifself.referer:
       self.Req.add_header("referer",self.referer)
   ifself.user_agent:
       self.Req.add_header("user-agent",self.user_agent)

 def__SendRequest(self):

   try:
     self.Res=urllib2.urlopen(self.Req)
     self.source=self.Res.read()
     self.code=self.Res.getcode()
     self.head_dict=self.Res.info().dict
     self.Res.close()
   except:
     print"Error:HttpWrapper=>_SendRequest",sys.exc_info()[1]

 defGetResponseCode(self):
   """
   得到服务器返回的状态码(200表示成功,404网页不存在)
   """
   returnself.code

 defGetSource(self):
   """
   得到网页源代码，需要解码后在使用
   """
   if"source"indir(self):
       returnself.source
   returnu""

 defGetHeaderInfo(self):
   """
   u"得到响应头信息"
   """
   returnself.head_dict

 defGetCookie(self):
   """
   得到服务器返回的Cookie，一般用于登录后续操作
   """
   if"set-cookie"inself.head_dict:
     returnself.head_dict["set-cookie"]
   else:
     returnNone

 defGetContentType(self):
   """
   得到返回类型
   """
   if"content-type"inself.head_dict:
     returnself.head_dict["content-type"]
   else:
     returnNone

 defGetCharset(self):
   """
   尝试得到网页的编码
   如果得不到返回None
   """
   contentType=self.GetContentType()
   ifcontentTypeisnotNone:
       index=contentType.find("charset")
       ifindex>0:
          returncontentType[index+8:]
   returnNone

 defGetExpiresTime(self):
   """
   得到网页过期时间
   """
   if"expires"inself.head_dict:
     returnself.head_dict["expires"]
   else:
     returnNone

 defGetServerName(self):
   """
   得到服务器名字
   """
   if"server"inself.head_dict:
     returnself.head_dict["server"]
   else:
     returnNone

__all__=[SendRequest,]

if__name__=="__main__":
   b=SendRequest("http://www.baidu.com")
   printb.GetSource()