顶会热词之数据爬取

import requests
from bs4 import BeautifulSoup
import pymysql

headers = {
    'user-agent': 'Mozilla/5.0 (Windows NT 10.0; Win64; x64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/74.0.3729.131 Safari/537.36'}  # 创建头部信息
url = 'http://openaccess.thecvf.com/CVPR2018.py'
print(url)
r = requests.get(url, headers=headers)
content = r.content.decode('utf-8')

soup = BeautifulSoup(content, 'html.parser')
dts = soup.find_all('dt', class_='ptitle')
print(dts)
hts = 'http://openaccess.thecvf.com/'
# 数据爬取
alllist = []
for i in range(len(dts)):
    print('这是第' + str(i) + '个')
    title = dts[i].a.text.strip()
    href = hts + dts[i].a['href']
    r = requests.get(href, headers=headers)
    content = r.content.decode('utf-8')
    soup = BeautifulSoup(content, 'html.parser')
    # print(title,href)
    divabstract = soup.find(name='div', attrs={"id": "abstract"})
    abstract = divabstract.text.strip()
    # print('第'+str(i)+'个：',abstract)
    alllink = soup.select('a')
    link = hts + alllink[4]['href'][6:]
    keyword = str(title).split(' ')
    keywords = ''
    for k in range(len(keyword)):
        if (k == 0):
            keywords += keyword[k]
        else:
            keywords += ',' + keyword[k]
    value = (title, abstract, link, keywords)
    alllist.append(value)
print(alllist)
tuplist = tuple(alllist)
# 数据保存
db = pymysql.connect("localhost", "root", "123456", "lunwen", charset='utf8')
cursor = db.cursor()
sql_cvpr = "INSERT INTO lunwens(title, abstract, link, keywords) values (%s,%s,%s,%s)"
try:
    cursor.executemany(sql_cvpr, tuplist)
    db.commit()
except:
    print('执行失败，进入回调3')
    db.rollback()
db.close()