import unittest
from time import sleep
from selenium import webdriver
from selenium.webdriver.common.keys import Keys
from selenium.webdriver.common.by import By
from selenium.webdriver.common.action_chains import ActionChains

def test_baidu2(self):
    self.driver.find_element(By.XPATH, (
        '/html/body/div[1]/div/div/main/div/div/div/div[2]/div/div[1]/div/div[1]/div[2]/div[1]')).click()
    # self.driver.switch_to.frame(i)

    a = self.driver.find_element(By.XPATH, (
        "/html/body/div[1]/div/div/main/div/div/div/div[2]/div/div[2]/div/div/div/label[1]/div/div/div[2]/input"))
    ActionChains(self.driver).double_click(a).perform()     # 這是一個雙擊  
    a.send_keys('13031076837')                             #雙擊後輸入新的內容  
    b = self.driver.find_element(By.XPATH, (
        '/html/body/div[1]/div/div/main/div/div/div/div[2]/div/div[2]/div/div/div/label[2]/div/div/div[1]/input'))
    ActionChains(self.driver).double_click(b).perform()# 這是一個雙擊 
    b.send_keys('076864\n'） #雙擊後輸入新的內容  

    self.driver.find_element(By.XPATH, (
        "/html/body/div[1]/div/div/main/div/div/div/div[2]/div/div[3]/button/span[2]/span/span")).click()
    sleep(3)
    a = self.driver.find_element(By.XPATH, ('/html/body/div[2]/div[9]'))
    # print(a.text)
    self.assertIn('使用者名稱或密碼錯誤', a.text, msg='判斷是否出現賬號或密碼錯誤')


後續可以將雙擊定義為一個函式 然後來呼叫該函式