python获取网页中所有图片并筛选指定分辨率的方法

 import urllib.request   # 导入urllib模块 import re     # 导入re模块 import os from PIL import Image htmlurl = 'http://www.win4000.com/wallpaper_detail_134824_3.html' downloadpath = 'C:\\Users\\yaowanjun\\Desktop\\img\\' def getHTML(htmlurl): req = urllib.request.urlopen(htmlurl) buf = req.read() return buf.decode('utf-8') def downloadImg(buf): req = r'src="(.+?\.jpg-600)"' #正则表达式，匹配图片格式 imgreq = re.compile(req) #编译正则表达式 imglist = re.findall(imgreq, buf) # print(imglist) x = 0 if not os.path.isdir(downloadpath):#若没有则创建 os.makedirs(downloadpath) paths = downloadpath for imgurl in imglist: f = open(paths + str(x) +'.jpg-600',"wb")  #打开文件 req = urllib.request.urlopen(imgurl) buf = req.read()       #读出文件 f.write(buf) f.close() x = x + 1 return imglist def saveImg(): for filenumber in os.walk(downloadpath): # print(filenumber[2]) for files in filenumber[2]: # print(files) singleimg = Image.open(downloadpath + files) singleimg.close() #print(singleimg.size, singleimg.width, singleimg.height) if singleimg.size == (1920, 1080): print(singleimg) else: os.remove(downloadpath + files) buf = getHTML(htmlurl) downloadImg(buf) saveImg()