百度图片下载，,#coding:utf-

百度图片下载，,#coding:utf-

#coding:utf-8'''python 2.7.5获取一些百度图片1.指定标签2.http://image.baidu.com/channel/listjson?pn=0&rn=1000&tag1=%E6%98%8E%E6%98%9F&tag2=%E5%BC%A0%E5%AD%A6%E5%8F%8B&ftags=&sorttype=0&ie=utf8&oe=utf-8&image_id=692147105这是获取列表的方式pn 分页标识rn 页面内图片数量tag1 主标签tag2 分标签其他字段暂时不管3.返回的内容json 转字典4.取download_url就可以了5.下载6.多线程加快点效率'''from urllib import urlretrieve,urlcleanupfrom urllib2 import *import jsonfrom hashlib import md5import sysclass Baiduimage():    """    """    def __init__(self,tag1,tag2,number = 1,stored = "."):        self.tag1 = tag1        self.tag2 = tag2        self.number = str(number)        self.url = self.make_url()        self.stored = stored        print "work start"    def make_url(self):        url = "http://image.baidu.com/channel/listjson?pn=0&rn="+self.number+"&tag1="+self.tag1+"&tag2="+self.tag2+"&ftags=&sorttype=0&ie=utf8&oe=utf-8"        return url    def request_body(self):        request = Request(self.url)        #request.add_header();        r = urlopen(request)        return r.read()    def parse_body(self):        jsonstr = json.loads(self.request_body())        urls = [i['download_url'] for i in jsonstr['data'] if i.has_key('download_url')]        return (urls,urls.__len__())    def image_name(self, url):        return self.stored+"/"+md5(url).hexdigest()+"."+url.split(".")[-1]    def dowload_image(self):        (urls,urlnumber) = self.parse_body()        def dowload(url):            try:                urlretrieve(url,self.image_name(url))                urlcleanup()            except:                return False            return True        print "want "+self.number+" images, get images links "+str(urlnumber)        if urlnumber == 0:            print "Could not find a image link"            pass        else:            print "Download start press Ctrl+Break to stop "            count = 0            for id,i in enumerate(urls):                if(dowload(i)):                    count = count + 1                    sys.stdout.write("Dowdload["+str(id+1)+"] has download "+str(count)+chr(8)*80)                    sys.stdout.flush()            print "\\nwork end"    def dowload_image_thread(self,threadnumber = 2):        """        """        (urls,urlnumber) = self.parse_body()        print "Download start press Ctrl+Break to stop "        def dowload(url):            try:                urlretrieve(url,self.image_name(url))                urlcleanup()            except:                return False            return True        from Queue import Queue        from threading import Thread        from itertools import count        def worker(count=count()):            while True:                (id,item) = q.get()                if(dowload(item)):                    sys.stdout.write("Dowdload["+str(id+1)+"] has download "+str(next(count) + 1)+chr(8)*80)                    sys.stdout.flush()                q.task_done()        q = Queue()        for i in range(threadnumber):            t = Thread(target=worker)            t.daemon = True            t.start()        for id,item in enumerate(urls):            q.put((id,item))        q.join()       # block until all tasks are done        print "work end"if __name__ == "__main__":    print "this is a test with thread "    Baiduimage("明星", "刘德华", 100).dowload_image_thread()#自定义分类 关键词 图片个数 存放路径#该片段来自于http://byrx.net