How to parse xml page?

Question

Python

Hello, I recently started learning python, I set myself the task of writing a currency parser, I managed to parse html from one site, but this is not at all, I need official data, but I can’t parse from here www.cbr.ru/scripts/XML_daily.asp ?date_req=02/03/2002 data. If it's not difficult to show a small piece of code how to parse? At least how to read the full page, otherwise errors constantly appear)

Answer 1

As I understand it, you need to get the exchange rate of the Belarusian ruble. This is easy to do using xpath using the lxml library.

import urllib

import lxml.etree as etree


def get_xml(url):
    response = urllib.urlopen(url)
    return response.read()

if __name__ == '__main__':
    xml = get_xml('http://www.cbr.ru/scripts/XML_daily.asp?date_req=02/03/2002')

    xml_data = etree.fromstring(xml)
    bel_rub = xml_data.xpath("/ValCurs/Valute[@ID='R01090']/Value")[0].text

    print(bel_rub)

Answer 2

e.g. www.crummy.com/software/BeautifulSoup/bs4/doc