python selenium select标签的下拉框和非select标签的下拉框

from selenium import webdriver#导包
from time import *
from selenium.webdriver.support.wait import WebDriverWait
from selenium.webdriver.support import expected_conditions as EC
from selenium.webdriver.common.by import By
from selenium.webdriver.support.select import Select
driver=webdriver.Chrome()#生成一个谷歌浏览器的操作对象
driver.get(‘http://公司禅道ip/zentao/company-browse.html‘)
driver.find_element_by_class_name(‘form-control‘).send_keys(‘用户名‘)#禅道账号
driver.find_element_by_xpath(‘//*[@id="login-form"]/form/table/tbody/tr[2]/td/input‘).send_keys("密码")#禅道密码
driver.find_element_by_id(‘submit‘).click()#点击登录
id_elment=‘field4‘
WebDriverWait(driver,10,1).until(EC.visibility_of_element_located((By.ID,id_elment)))
a=Select(driver.find_element_by_id(‘field4‘))#定位select下拉框的位置
a.select_by_index(1)#通过索引定位，第一个为0
sleep(2)
a.select_by_visible_text(‘用户名‘)#通过可见文本查找

a.deselect_by_index(1)
a.deselect_by_visible_text(‘用户名‘)