AttributeError: ‘NoneType’ object has no attribute ‘children’
第一次写爬虫,也是第一次博客,就碰到这个问题,查了半天也没找出原因,认真想了一下
‘NoneType’ 对象没有属性 ‘children’ ,应该是没有抓取到html网页內部信息,应该问题出现在def getHTMLText(url)函数没有得到url链接,贴出自己在慕课网看的嵩天老师的课程后写的代码
# -*- coding: utf-8 -*-
import requests
from bs4 import BeautifulSoup
import bs4
def getHTMLText(url):#01
try:
r = request.get(url, timeout=30)
r.raise_for_status()
r.encoding = r.apparent_encoding
return r.text
except:
return ""
def fillUnivList(ulist,html):#02
soup = BeautifulSoup(html,"html.parser")
for tr in soup.find('tbody').children:
if isinstance(tr,bs4.element.Tag):
tds = tr('td')
ulist.append([tds[0].string,tds[1].string,tds[2].string])
def printUnivList(ulist, num):
tplt = "{0:^10}\t{1:{3}^10}\t{2:^10}"
print(tplt.format("排名","学校名称","总分",chr(12288)))
for i in range(num):
u=ulist[i]
print(tplt.format(u[0],u[1],u[2],chr(12288)))
def main():
uinfo = []
url = 'http://www.zuihaodaxue.cn/zuihaodaxuepaiming2016.html'
html = getHTMLText(url)
fillUnivList(uinfo,html)
printUnivList(uinfo,20)
main()
最后发现代码错误出现在
r = request.get(url, timeout=30)
request应该是requests
在网上查了下出现这个错误,基本都是代码关键字出错导致