I don't know why, but I was pretty sure that we have to do recursive method to solve this problem. I mean, I did that, and it works. But when I see others solutions, I have seen that node.iter() just go through every line of the xml document which is, I think, better.

Anyway, here my code :

import sys
import xml.etree.ElementTree as etree

def get_attr_number(node):
    # your code goes here
    count = len(node.attrib)
           
    for child in node:
        count += get_attr_number(child)
        
    return count
    

if __name__ == '__main__':
    sys.stdin.readline()
    xml = sys.stdin.read()
    tree = etree.ElementTree(etree.fromstring(xml))
    root = tree.getroot()
    print(get_attr_number(root))

Here is HackerRank XML 1 - Find the Score in Python solution - https://programmingoneonone.com/hackerrank-xml-1-find-the-score-solution-in-python.html

1. def get_attr_number(node):
2. count = 0
3. for i in node.iter():
4. count+=len(i.attrib)
5. return count

in this challenge, root carry all the xml element as a string but with clarity of lines so if we iterate it using root.iter we iter each element or we say each line individualy afcourse it is done by using loop and in each iteration we use iterpointer(i) in loop and count the i.attrib because here this will give all attribute in form of dict and after that we find the len of that dict which have attribute and save it ,so now you will understand the logic behind this there are many functions of xml you can directly explore it using ai , python webpage and other ways above is my code-: