Python正则表达式练习

Python正则表达式练习

    爬取慕课课程图片https://www.imooc.com/course/list

    图片url

     

    复制代码
    In [13]: import urllib2
    
    In [14]: req = urllib2.urlopen('https://www.imooc.com/course/list')
    
    In [17]: listurl = re.findall(r'src=.+//(.+\.jpg)',buf)
    
    In [18]: listurl
    Out[18]: 
    ['img1.mukewang.com/529dc3380001379906000338-240-135.jpg',
     'img2.mukewang.com/57035ff200014b8a06000338-240-135.jpg',
     'img.mukewang.com/574669dc0001993606000338-240-135.jpg',
     'img2.mukewang.com/53e1d0470001ad1e06000338-240-135.jpg',
     'img3.mukewang.com/53a28e960001311b06000338-240-135.jpg',
     'img3.mukewang.com/540e57300001d6d906000338-240-135.jpg',
     'img4.mukewang.com/5b5b00d10001d05205400300-240-135.jpg',
     'img1.mukewang.com/5b56e2ab000194d806000338-240-135.jpg',
     'img1.mukewang.com/5b55b3f400017b9906000338-240-135.jpg',
     'img.mukewang.com/5b4ed6590001d9ee06000338-240-135.jpg',
     'img2.mukewang.com/5b4705c90001fc9506000338-240-135.jpg',
     'img1.mukewang.com/5b470bfe0001cdbf06000338-240-135.jpg',
     'img.mukewang.com/5b4863e40001a8c506000338-240-135.jpg',
     'img4.mukewang.com/5b33637d00016cbe05400300-240-135.jpg',
     'img3.mukewang.com/5b3dec540001278406000338-240-135.jpg',
     'img3.mukewang.com/5b20d7dd000124da06000338-240-135.jpg',
     'img3.mukewang.com/5b14f0d3000189d206000338-240-135.jpg',
     'img4.mukewang.com/5b39ca9100014d8605400300-240-135.jpg',
     'img3.mukewang.com/5b5188020001677306000338-240-135.jpg',
     'img2.mukewang.com/5b1e49640001904606000338-240-135.jpg',
     'img1.mukewang.com/5b3061210001550306000338-240-135.jpg',
     'img3.mukewang.com/5b289bbe0001fc4906000338-240-135.jpg',
     'img2.mukewang.com/5b14e8310001197706000338-240-135.jpg',
     'img1.mukewang.com/5b28da010001930906000338-240-135.jpg',
     'img4.mukewang.com/5b2218750001370806000338-240-135.jpg',
     'img4.mukewang.com/5b1f61150001a20905400300-240-135.jpg',
     'img.mukewang.com/5b1e0cfc0001ef7b06000338-240-135.jpg',
     'img3.mukewang.com/5b1dd1fa0001b70d06000338-240-135.jpg',
     'img1.mukewang.com/5b14d44b00014f9606000338-240-135.jpg',
     'img4.mukewang.com/5b14b0480001672706000338-240-135.jpg']
    
    
    In [28]: for url in listurl:
                    f = open(str(i)+'.jpg','w')
                    req = urllib2.urlopen('http://'+url)
                    buf = req.read()
                    f.write(buf)
                    i+=1
    
                    
    复制代码

    posted @   zgxme  阅读(182)  评论(0编辑  收藏  举报
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