在看《Python网络数据采集》一书,里面有这样一段代码:
from urllib.request import urlopen from bs4 import BeautifulSoup html=urlopen("http://www.pythonscraping.com/pages/page3.html") bsObj=BeautifulSoup(html,"html.parser") print(bsObj.find("img",{"src:":"../img/gifts/img1.jpg"}).parent.previous_siblingget_text())
但是运行后出错,提示:
AttributeError: 'NoneType' object has no attribute 'parent'
爬取得URL对应的网页页面如图所示:
对应的代码如下:
![]()
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个人感觉书中代码逻辑上没有错误。。。但是为什么最后IDE会提示'NoneType' object呢。。。是find函数使用不对么。。。应该怎么正确写这段代码呢?
previous_siblingget_text中间少.
不说
对find,keyword式bsObj.find("img",src="../img/gifts/img1.jpg").parent.previous_sibling.get_text()
attr式bsObj.find("img",attrs={"src":"../img/gifts/img1.jpg"}).parent.previous_sibling.get_text()
参考: http://beautifulsoup.readthedocs.io/zh_CN/latest/#find
{"src:":"../img/gifts/img1.jpg"}应该改为{"src":"../img/gifts/img1.jpg"},它找的src属性,没有:这个符号的。还有后面应该是.previous_sibling.get_text()吧!认真点...
from urllib.request import urlopen
from bs4 import BeautifulSoup
html=urlopen("http://www.pythonscraping.com/pages/page3.html")
bsObj=BeautifulSoup(html,"html.parser")
print(bsObj.find("img",{"src":"../img/gifts/img1.jpg"}).parent.previous_sibling.get_text())
你的代碼... 也太多錯...
"src:"
應改為 "src"
parent.previous_siblingget_text()
應改為 parent.previous_sibling.get_text()
我回答過的問題: Python-QA