AttributeError：'NoneType'对象没有属性'text'-Python，BeautifulSoup错误

Question

我刚刚开始了python网络课程，并且尝试使用BeautifulSoup解析HTML数据，但遇到了此错误。 我进行了研究，但找不到任何精确而确定的解决方案。 所以这是一段代码：

   import requests
   from bs4 import BeautifulSoup

   request = requests.get("http://www.johnlewis.com/toms-berkley-slipper-grey/p3061099")
   content = request.content
   soup = BeautifulSoup(content, 'html.parser')
   element = soup.find(" span", {"itemprop ": "price ", "class": "now-price"})
   string_price = (element.text.strip())
   print(int(string_price))


  # <span itemprop="price" class="now-price"> £40.00 </span>

这是我面临的错误：

   C:\Users\IngeniousAmbivert\venv\Scripts\python.exe 

   C:/Users/IngeniousAmbivert/PycharmProjects/FullStack/price-eg/src/app.py

    Traceback (most recent call last):
         File "C:/Users/IngeniousAmbivert/PycharmProjects/FullStack/price-eg/src/app.py", line 8, in <module>
             string_price = (element.text.strip())
    AttributeError: 'NoneType' object has no attribute 'text'

 Process finished with exit code 1

任何帮助将不胜感激

Answer 1

问题是标记名称，属性名称和属性值中包含多余的空格字符 ，请替换：

element = soup.find(" span", {"itemprop ": "price ", "class": "now-price"})

与：

element = soup.find("span", {"itemprop": "price", "class": "now-price"})

---

之后，在转换字符串时还要解决两件事：

• 从左侧剥离£字符
• 使用float()代替int()

固定版本：

element = soup.find("span", {"itemprop": "price", "class": "now-price"})
string_price = (element.get_text(strip=True).lstrip("£"))
print(float(string_price))

您会看到40.00打印。

Answer 2

您也可以使用CSS选择器尝试这样：

import requests
from bs4 import BeautifulSoup

request = requests.get("http://www.johnlewis.com/toms-berkley-slipper-grey/p3061099")
content = request.content
soup = BeautifulSoup(content, 'html.parser')
# print soup
element = soup.select("div p.price span.now-price")[0]
print element
string_price = (element.text.strip())
print(int(float(string_price[1:])))

输出：

<span class="now-price" itemprop="price">
                                            £40.00
                                                </span>
40