How can i get attribute number

Question

I use BS4 to parser .xml，i want to get resattribute number，but get none how to do it ?

source xml

Python Code

a = data_xml.find('digitizer',id="1")
b = a.find('properties')
print(b.get('res'))

Result

None

user_11583070 · Answer

I have taken your data as html

html="""      
   `     
               
    

    

    

    

    """
from bs4 import BeautifulSoup
soup=BeautifulSoup(html,"html.parser")

Code::

You can find all property tag and then find res value associate to it!

a = soup.find('digitizer',attrs={"id":"1"})
properties=a.find_all("property")
res_lst=[i['res'] for i in properties]

Output::

['621.7457275', '983.9639893', '0', '1', '1.861861944']

user_13151915 · Answer

Your xml seems poorly formatted, after reformatting it:

You can easily parse it like this:

from bs4 import BeautifulSoup

with open('data.xml') as raw_resuls:
    results = BeautifulSoup(raw_resuls, 'lxml')

for element in results.find_all("properties"):
    for property_tag in element.find_all("property"):
        print(property_tag['res'])

Output:

621.7457275
983.9639893
0
1
1.861861944

You can find more info about parsing attribute values from xml in the tutorial where the code is from.

Edit: Note that I slightly modified the code to fit your question.

How can i get attribute number

2 Answers