from selenium import webdriver

from selenium.webdriver.common.keys import Keys

import time

# 数据初始化

base_url = "http://www.baidu.com/"

browser = webdriver.Chrome()

# 打开浏览器

browser.get(base_url)

browser.maximize_window()

# 点击“登录”按钮进行登录

browser.find_element_by_name('tj_login').click()

time.sleep(3)

# 先找到登录框

browser.find_element_by_id('passport-login-pop-api')

# 再找到用户名输入框

user_name = browser.find_element_by_id('TANGRAM__PSP_8__userName')

user_name.send_keys('username')

# 再切换到密码输入框

# TAB 切换输入框

user_name.send_keys(Keys.TAB)

time.sleep(3)

browser.find_element_by_id('TANGRAM__PSP_8__password').send_keys('password')

time.sleep(3)

# 关闭浏览器

browser.quit()