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发表于 2020-11-13 16:43:26
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错误地方有三个:
1、定义类,没有调用类中方法
2、for 循环的 start 和 self.starnum 你打错了
3、requests 读取数据后需要 .text 才会获得源码
- import requests
- from bs4 import BeautifulSoup
- class Douban:
- def __init__(self):
- self.url='https://movie.douban.com/top250'
- self.starnum=[]
- for start_num in range(0,251,25):
- self.starnum.append(start_num)
- self.header={'User-Agent':'Mozilla/5.0 (Windows NT 10.0; Win64; x64; rv:82.0) Gecko/20100101 Firefox/82.0'}
- def get_top250(self):
- for start in self.starnum:
- html=requests.get(self.url,params={'start':start},headers=self.header)
- soup=BeautifulSoup(html.text,'html.parser')
- num=soup.select('.grid_view > li:nth-child(1) > div:nth-child(1) > div:nth-child(2) > div:nth-child(1) > a:nth-child(1) > span:nth-child(1)')
- for num in num:
- print(num.get_text())
- cls=Douban()
- cls.get_top250()
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