import requests
from lxml import html

LOGIN_URL = "https://cas.sfu.ca/cas/login?service=https://my.sfu.ca/mysfu/auth&app=mySFU"
URL = "https://my.sfu.ca/mysfu/"

def main():
    session_requests = requests.session()

    # Get login csrf token
    result = session_requests.get(LOGIN_URL)
    tree = html.fromstring(result.text)
    authenticity_token = list(set(tree.xpath("//input[@name='lt']/@value")))[0]

    # Create payload
    payload = {
        "username": "v*****",
        "password": "Y*****",
        "lt": "LT-447-A4KGjbl5jVX4ZvRwNGRIL0xodSHcJY"
    }

    # Perform login
    result = session_requests.post(LOGIN_URL, data = payload, headers = dict(referer = LOGIN_URL))

    # Scrape url
    result = session_requests.get(URL, headers = dict(referer = URL))
    tree = html.fromstring(result.content)
    bucket_names = tree.xpath("//div[@class='repo-list--repo']/a/text()")

    print(bucket_names)

if __name__ == '__main__':
    main()

####################################################################
Username:
        <input id="username" name="username" tabindex="1" class="text" onfocus="GaveFocus(this)" type="text" value="" autocomplete="false"/>
Password:
        <input id="password" name="password" tabindex="2" onkeypress="capLock(event)" class="text" onfocus="GaveFocus(this)" type="password" value="" autocomplete="off"/>
Token:
        <input type="hidden" name="lt" value="LT-293557-0lx4PsiambnCMcpbaDLpbwzPxVEFh4" />
Login URL
        https://cas.sfu.ca/cas/login?service=https://my.sfu.ca/mysfu/auth&app=mySFU
Desired URL
        https://my.sfu.ca/mysfu/
Fields submitted to
        /cas/login;jsessionid=003D1C4D4DC4F4D4E65AEB270D897C94.cas-ap2?service=https://my.sfu.ca/mysfu/auth&amp;app=mySFU
Logins managed by
        http://www.ja-sig.org/cas/

############################################