元素定位

from selenium import webdriver

driver = webdriver.Firefox()
driver.get("https://www.baidu.com")
#输入框ID定位
driver.find_element_by_id("kw").send_keys("python")
#"百度一下“按钮 ID定位
driver.find_element_by_id("su").click()

from selenium import webdriver

driver = webdriver.Firefox()
driver.get("https://www.baidu.com")
#输入框class name定位
driver.find_element_by_class_name("s_ipt").send_keys("python")
#"百度一下“按钮 class 定位
driver.find_element_by_class_name("s_btn").click()

from selenium import webdriver

driver = webdriver.Firefox()
driver.get("https://www.baidu.com")
#输入框 xpath属性层级 定位
driver.find_element_by_xpath("//span[contains(@class, ‘s_ipt_wr‘)]/input").send_keys("python")
#"百度一下“按钮 xpath属性层级 定位
driver.find_element_by_xpath("//span[@class=‘bg s_btn_wr‘]/input").click()

from selenium import webdriver
import time

driver = webdriver.Firefox()
driver.get("https://www.baidu.com")
#输入框 xpath属性层级 定位
driver.find_element_by_xpath("//span[contains(@class, ‘s_ipt_wr‘)]/input").send_keys("廖雪峰python")
#"百度一下“按钮 xpath属性层级 定位
driver.find_element_by_xpath("//span[@class=‘bg s_btn_wr‘]/input").click()
time.sleep(2)

#定位一组元素
s = driver.find_elements_by_xpath("//div[@tpl=‘se_com_default‘]/h3/a")
print(len(s))
s[1].click()