AttributeError：“NoneType”对象没有“get”属性？答案

【问题标题】：AttributeError: 'NoneType' object has no attribute 'get'?AttributeError：“NoneType”对象没有“get”属性？
【发布时间】：2015-10-16 14:49:45
【问题描述】：

我已经调试了这段代码，但还是有一些错误，我不知道如何处理这个问题。

我已经搜索过类似的问题，但仍有一些问题。

import requests
from bs4 import BeautifulSoup
import time
import json
import os
import sys
reload(sys)
sys.setdefaultencoding('utf-8')


url = 'http://www.zhihu.com'
loginURL = 'http://www.zhihu.com/login/email'

headers = {
"User-Agent": 'Mozilla/5.0 (Macintosh; Intel Mac OS X 10.10; rv:41.0)    Gecko/20100101 Firefox/41.0',
"Referer": "http://www.zhihu.com/",
'Host': 'www.zhihu.com',
}

data = {
'email': 'xxxxxxx1@gmail.com',
'password': 'xxxxxxx',
'rememberme': "true",
}

s = requests.session()

if os.path.exists('cookiefile'):
with open('cookiefile') as f:
    cookie = json.load(f)
s.cookies.update(cookie)
req1 = s.get(url, headers=headers)
with open('zhihu.html', 'w') as f:
    f.write(req1.content)

else:
req = s.get(url, headers=headers)
print req

soup = BeautifulSoup(req.text, "html.parser")
xsrf = soup.find('input', {'name': '_xsrf', 'type': 'hidden'}).get('value')

data['_xsrf'] = xsrf

timestamp = int(time.time() * 1000)
captchaURL = 'http://www.zhihu.com/captcha.gif?=' + str(timestamp)
print captchaURL

with open('zhihucaptcha.gif', 'wb') as f:
    captchaREQ = s.get(captchaURL)
    f.write(captchaREQ.content)
loginCaptcha = raw_input('input captcha:\n').strip()
data['captcha'] = loginCaptcha
print data
loginREQ = s.post(loginURL,  headers=headers, data=data)
print loginREQ.url
print s.cookies.get_dict()
with open('cookiefile', 'wb') as f:
    json.dump(s.cookies.get_dict(), f)

# http://www.zhihu.com/question/27621722/answer/48820436.
zanBaseURL = 'http://www.zhihu.com/answer/14926794/voters_profile?&offset={0}'
page = 0
count = 0
while 1:
zanURL = zanBaseURL.format(str(page))
page += 10
zanREQ = s.get(zanURL, headers=headers)
zanData = zanREQ.json()['payload']
if not zanData:
    break
for item in zanData:
    zansoup = BeautifulSoup(item, "html.parser").find(
        'a', {'target': "_blank", 'class': 'zg-link'})
    print 'nickname:', zansoup.get('title'),  '    ',
    print 'person_url:', zansoup.get('href')
    count += 1
print count

错误如下：

Traceback (most recent call last):
  File "<stdin>", line 1, in <module>
  File "D:\anzhuang\Anaconda\lib\site-packages\spyderlib\widgets\externalshell\sitecustomize.py", line 682, in runfile
    execfile(filename, namespace)
  File "D:\anzhuang\Anaconda\lib\site-packages\spyderlib\widgets\externalshell\sitecustomize.py", line 71, in execfile
    exec(compile(scripttext, filename, 'exec'), glob, loc)
  File "D:/python/crawl_zhihu.py", line 78, in <module>
    print 'nickname:', zansoup.get('title'),  '    ',
AttributeError: 'NoneType' object has no attribute 'get'

【问题讨论】：

嗯，错误非常明确：None 类型没有任何属性。因此，您的对象 zansoup 似乎是错误的根源。确认已正确分配？

标签： python web-crawler spidermonkey

【解决方案1】：

来自dox：

如果find() 找不到任何内容，则返回 None

这可能会引发错误，因为None 类型没有任何属性。

所以，你可以处理可能的None 类型：

if zansoup:
    print 'nickname:', zansoup.get('title'),  '    ',
    print 'person_url:', zansoup.get('href')
else
    print 'there was an error ...'

【讨论】：