python爬虫
以下是我按照教程所写的代码，运行之后没有反馈，求大佬指点，import urllib.request
import re
def open_url(url):
req = urllib.request.Request(url)
req.add_header('User-Agent','Mozilla/5.0 (Windows NT 10.0; Win64; x64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/70.0.3538.102 Safari/537.36 Edge/18.18362')
page = urllib.request.urlopen(req)
html = page.read().decode('utf-8')
return html
def get_img(html):
p=r'<img width="560" height="860" class="BDE_Image" style="cursor: url(//tb2.bdstatic.com/tb/static-pb/img/cur_zin.cur), pointer;" src=[^"]+\.jpg"'
imglist = re.findall(p,html)
n=1
for each in imglist:
n += 1
if n==5:
break
print("++++++++")
print(each)
if __name__ == '__main__':
url="https://tieba.baidu.com/p/6769674730"
get_img(open_url(url))
正则没提取到数据，改成这样吧：
import urllib.request
import re
def open_url(url):
req = urllib.request.Request(url)
req.add_header('User-Agent','Mozilla/5.0 (Windows NT 10.0; Win64; x64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/70.0.3538.102 Safari/537.36 Edge/18.18362')
page = urllib.request.urlopen(req)
html = page.read().decode('utf-8')
return html
def get_img(html):
p=r'<img class="BDE_Image" src="(.+?)"'
imglist = re.findall(p,html)
n=1
for each in imglist:
n += 1
if n==5:
break
print("++++++++")
print(each)
if __name__ == '__main__':
url="https://tieba.baidu.com/p/6769674730"
get_img(open_url(url)) Twilight6 发表于 2020-8-9 16:23
正则没提取到数据，改成这样吧：
我去...这是真的厉害...
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