Python 普通爬虫(爬图片，只支持一页)

import urllib.request
import re
import os

def imageCrawler(url,toPath):
    headers = {
        "User-Agnet": "Mozilla/5.0 (Windows NT 10.0; WOW64) AppleWebKit/537.36 (KHTML, like Gecko)Chrome/56.0.2924.90 Safari/537.36 2345Explorer/9.6.0.18627"}
    req=urllib.request.Request(url,headers=headers)
    response=urllib.request.urlopen(req)
    htmlStr=response.read().decode("utf-8")
   # with open(r"D:\学习\Python\pycharm\234\爬虫\爬图片\yhd.html","wb") as f:
        #f.write(htmlStr)
    pat=r'<img original="//(.*?)" '
    re_image=re.compile(pat ,re.S)
    imagesList=re_image.findall(htmlStr)
    #print(imagesList)
    print(len(imagesList))
    #print(imagesList[0])
    num=1
    for imageUrl in imagesList:
        path=os.path.join(toPath,str(num)+".jpg")
        num+=1
        #把图片下载到本地
        urllib.request.urlretrieve("http://"+imageUrl,filename=path)

url="https://search.yhd.com/c0-0/k%25E6%2597%25B6%25E5%25B0%259A%25E8%25A3%2599%25E8%25A3%2585/"
toPath=r"D:\image"
imageCrawler(url,toPath)