simulate browser action

# coding:utf-8
from selenium import webdriver
from selenium.webdriver.common.keys import Keys
import pickle
import time


class User:
    def __init__(self, user=None, psswd=None):
        self._user = user
        self._psswd = psswd


    def save_data(self):
        user_data = (self._user, self._psswd)
        with open('data.dat', 'wb') as f:
            pickle.dump(user_data, f)


    def retrieve_data(self):
        with open('data.dat', 'rb') as f:
            user_data = pickle.load(f)
        return user_data


class Bot:
    def __init__(self):
        self._url = "https://www.facebook.com/login.php"
        self.driver = webdriver.Chrome("chromedriver.exe")

    def start(self):
        self.driver.get(self._url)
        assert "Entrar no Facebook | Facebook" in self.driver.title

    def login(self, t_data):
        u, p = t_data[0], t_data[1]
        email_container = self.driver.find_element_by_id('email')
        email_container.send_keys(u)
        password_container = self.driver.find_element_by_id('pass')
        password_container.send_keys(p)
        password_container.send_keys(Keys.RETURN)
        assert "Facebook" in self.driver.title
        self.messages()

    def messages(self):
        elem = self.driver.find_element_by_class_name('jewelButton')
        parent = elem.find_element_by_xpath('..')
        print(parent)
        # parent.click()

    def close(self):
        time.sleep(5)
        self.driver.close()


def main():
    user_config = User()
    data = user_config.retrieve_data()
    bot = Bot()
    bot.start()
    bot.login(data)
    bot.close()


if __name__ == '__main__':
    main()