属性错误：'NoneType'对象没有属性'text' - Python ， 美丽汤错误

Question

我刚刚开始了一个Python Web课程，我试图使用BeautifulSoup来解析HTML数据，并且遇到了这个错误。我研究了，但找不到任何精确的解决方案。因此，这是代码：

   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:UsersIngeniousAmbivertvenvScriptspython.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

问题是您在标签名称，属性名称和属性值的 extra space字符，替换：

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

with：

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

---

之后，转换字符串时还有两件事要修复：

• 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选择器来尝试这样的尝试：

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