问Python请求post不做任何事情

EN

import mechanicalsoup

'''Login to website'''
def login(self, usr, pw):
    login_url = 'https://kissanime.to/Login'

    # Creating cfscrape instance
    self.r = cfscrape.create_scraper()
    login_page = self.r.get(login_url)

    # Creating a mechanicalsoup browser instance with 
    # response object of cfscrape
    browser = mechanicalsoup.Browser(self.r)
    soup = BeautifulSoup(login_page.text, 'html.parser')

    # grab the login form
    login_form = soup.find('form', {'id':'formLogin'})

    # find login and password inputs
    login_form.find('input', {'name': 'username'})['value'] = usr
    login_form.find('input', {'name': 'password'})['value'] = pw

    browser.submit(login_form, login_page.url)

import requests,json
'''Login to website'''
def login(self, usr, pw):
    login_url = 'https://kissanime.to/Login'
    sess = requests.Session()

    # login credentials
    payload = {
        'username': usr,
        'password': pw,
        'redirect': ''
    }

    # Creating cfscrape instance of the session
    scraper_sess = cfscrape.create_scraper(sess)
    a = scraper_sess.post(login_url, data=json.dumps(payload))
    print(a.text)
    print(a.status_code)