'NoneType' object has no attribute 'string'错误

Question

问题相关代码

from bs4 import BeautifulSoup
import requests
response = requests.get('http://www.weather.com.cn/weather/101280101.shtml')#发起网络请求(访问网址)
response.encoding = 'utf-8'#设置编码为utf-8
soup = BeautifulSoup(response.text,'html.parser')
div = soup.find('div',id = '7d')#获取id=7d的div标签的内容
ul = div.find('ul')#获取div标签中第一个ul标签的内容
li = ul.find_all('li')#获取ul标签中所有li标签的内容
weatherForSevenDay = []
for weather in li:
    temp = []
    date = weather.find('h1').string#获取li标签中h1标签的内容
    temp.append(date)
    p = weather.find_all('p')#获取li标签中所有p标签的内容
    weatherDetail = p[0].string#获取第一个p标签的内容
    if weatherDetail is not None:
        temp.append('天气为:%s'%weatherDetail)
    HighTemprature = p[1].find('span').string#获取第二个p标签中span标签的内容
    if HighTemprature is not None:
        temp.append('最高温为%s°C'%HighTemprature)
    LowTemprature = p[1].find('i').string#获取第二个p标签中i标签的内容
    if LowTemprature is not None:
        temp.append('最低温为%s°C'%LowTemprature)
    weatherForSevenDay.append(temp)
for weather in weatherForSevenDay:
    print(weather)

######报错

Traceback (most recent call last):
File "C:\Users\DELL\Documents\Aptana Studio 3 Workspace\python\my\广州七日天气.py", line 19, in
HighTemprature = p[1].find('span').string#获取第二个p标签中span标签的内容
AttributeError: 'NoneType' object has no attribute 'string'

Answer 1

看错误提示是因为p[1].find('span')没有找到这个标签，是一个空值

Answer 2

我打印了一下你的weather，内容如下：
并不能按你的解析方式去解析，有些数据没有

<li class="sky skyid lv1 on">
<h1>3日（今天）</h1>
<big class="png40"></big>
<big class="png40 n00"></big>
<p class="wea" title="晴">晴</p>
<p class="tem">
<i>15℃</i>
</p>
<p class="win">
<em>
<span class="NNW" title="无持续风向"></span>
</em>
<i>&lt;3级</i>
</p>
<div class="slid"></div>
</li>

Answer 3

我给你改了一下，能正常运行了，你可以参考一下：

from bs4 import BeautifulSoup
import requests
response = requests.get('http://www.weather.com.cn/weather/101280101.shtml')#发起网络请求(访问网址)
response.encoding = 'utf-8'#设置编码为utf-8
soup = BeautifulSoup(response.text,'html.parser')
div = soup.find('div',id = '7d')#获取id=7d的div标签的内容
ul = div.find('ul')#获取div标签中第一个ul标签的内容
li = ul.find_all('li')#获取ul标签中所有li标签的内容
weatherForSevenDay = []
for weather in li:
    temp = []
    date = weather.find('h1').string#获取li标签中h1标签的内容
    temp.append(date)
    p = weather.find_all('p')#获取li标签中所有p标签的内容
    print(p)
    weatherDetail = p[0].string#获取第一个p标签的内容
    if weatherDetail is not None:
        temp.append('天气为:%s'%weatherDetail)
    HighTemprature = p[1].find('i').string#获取第二个p标签中span标签的内容
    if HighTemprature is not None:
        temp.append('气温为%s°C'%HighTemprature)
    LowTemprature = p[2].find('i').string#获取第二个p标签中i标签的内容
    if LowTemprature is not None:
        temp.append('风力为%s'%LowTemprature)
    weatherForSevenDay.append(temp)
for weather in weatherForSevenDay:
    print(weather)