登录测试函数版：

from selenium import webdriver
import time
url = "http://www.maiziedu.com/"
login_text = "登录"
account = "maizi_test@139.com"
pwd = "abc123456"
def login_test():
    d = webdriver.Firefox()
    d.get(url)
    time.sleep(7)
    d.maximize_window()
    time.sleep(2)
    d.find_elements_by_link_text(login_text).click()
    time.sleep(2)
    account_ele = d.find_element_by_id("id_account_l")
    time.sleep(2)
    account_ele.clear()
    account_ele.send_keys(account)
    pwd_ele = d.find_element_by_id("id_password_l")
    pwd_ele.clear()
    pwd_ele.send_keys(pwd)
    d.find_element_by_id("login_btn").click()
    try:
        d.find_elements_by_link_text("该账号格式不正确！")
        print("Account And Pwd Error!")
    except:
        print("Account And Pwd Right!")
    d.close()
if __name__ == '__main__':
    login_test()