Download ECB exchange rate XML and convert it into a Python dictionary

parse_exchange_rate.py

#!/usr/bin/env python3

"""
Method for obtaining the exchange rate from the ECB.
"""

from __future__ import annotations

import xml.etree.ElementTree as ET

import requests


def get_exchange_rate() -> dict[str, float]:
    """
    Fetch the exchange rate and return the dictionary with the currency (in ISO 4217 format) as key and
    the value (as a float) relative to the Euro.
    """
    url = 'https://www.ecb.europa.eu/stats/eurofxref/eurofxref-daily.xml'
    exchange_rates = requests.get(url)
    tree = ET.fromstring(exchange_rates.text)
    data = [item.attrib for item in tree[-1][0]]
    return {
        item['currency'] : float(item['rate']) for item in data
    }