import re

link_re = re.compile("https?://\S+(\s|$)")


def extract_url(message):
    """
    Returns the first url in a message. If there aren't any returns None
    """
    answer = link_re.search(message)

    if answer is not None:
        answer = answer.group(0).strip()

    return answer

import re

link_re = re.compile("(\s|^)<(https?://[\w./?+]+)>(\s|$)")


def extract_url(message):
    """
    Returns the first url in a message. If there aren't any returns None
    """
    answer = link_re.search(message)

    if answer is not None:
        answer = answer.group(2).strip()

    return answer

Change regex to adapt to the <url> format
fix: Change regex to adapt to the <url> format
