from selenium import webdriver
from selenium.webdriver.common.by import By
from selenium.webdriver.support.ui import WebDriverWait
from selenium.webdriver.support import expected_conditions as EC
browser = webdriver.Chrome()browser.get('https://login.yahoo.com')emailElem = browser.find_element_by_id('login-username')emailElem.send_keys('email@yahoo.in')loginbtn=browser.find_element_by_id("login-signin")loginbtn.click()passwordElem = WebDriverWait(browser, 10).until( EC.presence_of_element_located((By.ID, "login-passwd")))passwordElem.send_keys('password')submitBtn=browser.find_element_by_id("login-signin")submitBtn.click()让按钮仅通过单击即可完成其工作，而不是提交整个表单
