python crawling pictures to a local folder

import requests
import re
import urllib
import urllib.parse
import urllib.request
def getUrl():
#https://www.ivsky.com/tupian/ziranfengguang/index_3.html
for i in range(1,5):
urls=“https://www.ivsky.com/tupian/ziranfengguang/index_”+str(i)+".html"
print(urls)
url = requests.get(urls)
url.encoding = “utf-8”
html = url.text
reg = re.compile(r’

<a href=".?" title="(.?)" ', re.S)
items = re.findall(reg, html)
print(items)
for i in items:
for i in items:
ax = “http://” + i[0]
print(ax)
paths = “f:/data2/”
urllib.request.urlretrieve(ax, “{}{}.jpg”.format(paths, i[1]))

if name==‘main’:
getUrl()