selenium下拉选择框元素操作

情况一：select标签

from selenium.webdriver.support.select import Select   #引入Select 类
Select 赋值的三种方法：
select_ele = driver.find_element(By.CSS_SELECTOR,"#all_menu_list")#先找到select框
select = Select(select_ele) #将“select_ele”实例化
select.select_by_value("category.php?act=list")  #通过value去赋值
select.select_by_index(0)  #通过索引赋值
select.select_by_visible_text("测试")  #通过可见的文本赋值

情况二：非select标签 

adder_one_locator = (By.XPATH,"//*[@id="app"]/div/div[3]/div[2]/div/div[3]/form/div[1]/div/div[1]/div/input")#定位选择框 
adder_locator = (By.CSS_SELECTOR,"body > div.el-select-dropdown.el-popper > div.el-scrollbar > div.el-select-dropdown__wrap.el-scrollbar__wrap > ul")#定位选择下拉框 

adder_one_select_locator = (By.CSS_SELECTOR,"body > div.el-select-dropdown.el-popper > div.el-scrollbar > div.el-select-dropdown__wrap.el-scrollbar__wrap > ul > li:nth-child(1) > span") #选择首页

 def click_one_adder(self):
        """
        点击位置的第一个选择框
        :return:
        """
        self.find_element(self.adder_one_locator).click()



    def click_one_adder_select(self):
        """
        在位置的第一个选择框中选择相应的信息
        :return:
        """
        a = self.find_element(self.adder_locator)
        a.find_element(*self.adder_one_select_locator).click()