爬虫python和正则

1. 爬虫基本

   
   python包

image.png

打开网页

import urllib.request

#req=urllib.request.Request('http://placekitten.com/g/500/600')
#response = urllib.request.urlopen(req)
response = urllib.request.urlopen('http://placekitten.com/g/500/600')
cat_img = response.read().decode('utf-8')

with open('cat_500_600.jpg','wb') as f:
    f.write(cat_img)

修改header 代理

2. 正则表达式

re.search(r'FishC','I love FishC.com!')

search方法
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