AttributeError: 'NoneType' 对象没有属性 'text' - BeautifulSoup 到 CSV

如何解决AttributeError: 'NoneType' 对象没有属性 'text' - BeautifulSoup 到 CSV

我正在尝试制作一个浏览多个页面的网络爬虫，为我制作一个 csv 列表。当我运行基本代码时，它可以工作，但是当我让它迭代到多个页面时，我得到一个 AttributeError:

assignees=assignees_elem.text.strip() AttributeError: 'nonetype' 对象没有属性 'text'

csv 已保存但为空白。

这是我的代码：

import requests
from bs4 import *
import csv


pagenumber = 0


file = open('newcsv','w')
writer = csv.writer(file)

while pagenumber <50:
    pagenumber += 1
    pagenumbers = str(pagenumber)
    
    URL = 'website'+pagenumbers
    page = requests.get(URL)
    soup = BeautifulSoup(page.content,'html.parser')
    site_elems = soup.find_all('div',class_='Meta')
    writer.writerow(['Number','Issued','Assignees','Inventors'])
    
    for site_elem in site_elems:
        number_elem = site_elem.find('div',class_='number')
        issued_elem=site_elem.find('div',class_='date-issued')
        assignees_elem=site_elem.find('div',class_='assignees')
        inventors_elem=site_elem.find('div',class_='inventors')
        number=number_elem.text.strip()
        issued=issued_elem.text.strip()
        assignees=assignees_elem.text.strip()
        inventors=inventors_elem.text.strip()
        print (number + ' ' + issued +' ' + assignees + ' ' + inventors)
        writer.writerow([number.encode('utf-8'),issued.encode('utf-8'),assignees.encode('utf-8'),inventors.encode('utf-8')])
        
file.close()    

解决方法

我通过添加解决了

if None in (number_elem,issued_elem,assignees_elem,inventors_elem): continue