登录<https://www.steelhome.cn/Market_area_xhindex.php>这个网站，用户名：qinghong 密码：Chcg1234@

def login_steelhome(url, username, password):
  """
  模拟登录钢贸网
  :param url: 登录地址
  :param username: 用户名
  :param password: 密码
  :return: 登录后的cookie
  """
  browser = webdriver.Chrome()
  browser.get(url)
  browser.find_element_by_id('username').send_keys(username)
  browser.find_element_by_id('password').send_keys(password)
  browser.find_element_by_class_name('sub_btn').click()
  cookie = browser.get_cookies()
  browser.close()
  return cookie