from urllib import request
import re
#定义url
page=100
url='https://tieba.baidu.com/f?kw=%E6%AE%B5%E5%AD%90&ie=utf-8&pn='+str(page)
try:
#定义请求头
headers={'User-Agent': 'Mozilla/5.0 (Windows NT 6.1; Win64; x64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/99.0.4844.51 Safari/537.36'}
#定义请求，传入请求头
req=request.Request(url,headers=headers)
#打开网页
resp=request.urlopen(req)
#打印响应码，解码
content=resp.read().decode('utf-8')
print(content)
#正则表达式
pattern=re.compile(r'<a.*?title=(.*?)\s.*?>(.*?)</a>')
#匹配html
items=re.findall(pattern,content)
#打印解析的内容
for i in items:
print(i[0]+'\t'+i[1])
except request.URLError as e:
#打印响应码
if hasattr(e,'code'):
print(e.code)
#打印异常原因
if hasattr(e,'reason'):
print(e.reason)
