层级定位

# 层级定位
import time
from selenium.webdriver.common.by import By
from selenium.webdriver.common.action_chains import ActionChains
from selenium import webdriver
driver = webdriver.Chrome()
driver.get('https://www.baidu.com')
driver.maximize_window()
driver.implicitly_wait(10)
driver.find_element_by_link_text('登录').click()
time.sleep(1)
driver.find_element_by_id('TANGRAM__PSP_11__footerULoginBtn').click()
time.sleep(1)
# 层级定位 父id.子id
driver.find_element_by_id('TANGRAM__PSP_11__form')
    .find_element_by_id('TANGRAM__PSP_11__userName').send_keys('54216')
time.sleep(2)
driver.close()