What methods are available to modify, append, or remove an attribute from a tag?

I have an HTML document that contains two different types of 'tr' tags.

<tr bgcolor="lightgrey">
<tr>

Each 'tr' tag includes 3-4 lines of code with embedded 'tags' within them. However, when I try to access the attributes, I don't obtain 'lightgrey' as a result. Instead, I encounter either an error or no value at all. To parse the HTML, I am utilizing Beautiful Soup library.

This is the code snippet I have attempted:

list = soup.find_all('tr')
    for item in list:
        print(item.attrib) # continuously prints none

I also tried accessing the attribute using this approach:

list = soup.find_all('tr')
        for item in list:
            print(item.find('tr')['bicolor'])

However, I keep receiving errors like "NoneType object has no attribute" or "is not subscriptable".

My objective is to access the attribute of each 'tr' tag, retrieve its value, and modify the bicolor to a desired color based on its original color scheme.

pythonhtmlbeautifulsoupattributestags

Answer №1

Let's test this approach:

your_list = beautiful_soup.find_all("tr") #it's better to avoid using 'list' as a variable name...
for element in your_list:
   if len(element.attrs)>0: 
       print(element['bgcolor'])

Result:

warmgrey

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