Python爬取网页中的链接标题
发布于2019-10-28 19:37 阅读(1006) 评论(0) 点赞(9) 收藏(1)
from bs4 import BeautifulSoup
import requests
import time
t0 = time.perf_counter()
url = "https://www.shiyanlou.com/questions/102676/?utm_source=baidu&utm_medium=cpc&utm_campaign=python&utm_term=keywords&renqun_youhua=417274"
headers = {
'User-Agent': 'Mozilla/5.0 (Macintosh; Intel Mac OS X 10_11_2) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/47.0.2526.80 Safari/537.36'
}
html = requests.get(url,headers = headers).content
t1 = time.perf_counter()
soup = BeautifulSoup(html,"lxml")
bks = soup.select("#__layout > div > div.body > div.container > div.row > div.col-md-9 > div > div > div.markdown-body > ol > li > a")
i=0
t2 = time.perf_counter()
for bk in bks:
i = i +1
print(str(i) , bk.text)
t3 = time.perf_counter()
#各个步骤所耗时间
print ("read:", t1-t0)
print ("soup:", t2-t1)
print ("print:", t3-t2 )
所属网站分类: 技术文章 > 博客
作者：精灵
链接：https://www.pythonheidong.com/blog/article/147419/3deb499f852588fdfae4/
来源：python黑洞网
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