Question

Why does my BeautifulSoup parser fail after an HTML structure update

Answer 1

Hey this happens because BeautifulSoup usually fails as they are tightly coupled to exact HTML structures they were written against. So when the website updates a little thing in frontend it crashes or breaks the selectors or parsing assumptions

Before 

<div class="price">$19</div>

Your parser 

soup.find("div", class_="price").text

After updation 

<span data-testid="price-value">$19</span> 

Here find() returns None 

.text crashes  with : 

AttributeError: 'NoneType' object has no attribute 'text'

This is the most common failure