Question

我正在使用Python中的Selenium WebDriver编写用于测试自动化的简单脚本，但问题与Python有关，而不是与Selenium有关。有两个类FindByXPATH_1（base）＆amp; FindByXPATH_2（派生）。我想调用一个属性＆＃34; driver＆＃34;来自FindByXPATH_2方法的基类，但是当我运行代码时，AttributeError显示出来：＆＃34;输入对象＆＃39; FindByXPATH_1＆＃39;没有属性＆＃39; driver＆＃39;＆＃34;

以下是代码：

class FindByXPATH_1():
    def __init__(self):
        self.driver_location = '/usr/local/bin/chromedriver'
        self.driver = webdriver.Chrome(self.driver_location)
        self.driver.get('https://letskodeit.teachable.com/p/practice')

from basics.xpath_1 import FindByXPATH_1
import basics #the classes are in two different python files

class FindByXpath_2(FindByXPATH_1):
    def __init__(self):
        FindByXPATH_1.__init__(self)

    def find_by_starts_with(self):
        starting_with = FindByXPATH_1.driver.find_elements(By. XPATH, 
        '//div[@class="view-school"]//h3[starts-with(@)class, "subtitle"]')
        print(len(starting_with))

test = FindByXPATH_2()
test.find_by_starts_with()

运行代码后，我收到一条消息＆＃34; AttributeError：type object＆＃39; FindByXPATH_1＆＃39;没有属性＆＃39; driver＆＃39;＆＃34; 我该如何调用该属性？

Answer 1

在这一行：

    starting_with = FindByXPATH_1.driver.find_elements(By. XPATH, 
    '//div[@class="view-school"]//h3[starts-with(@)class, "subtitle"]')

你应该调用self.driver.find_elements，否则你试图访问FindByXPATH_1的类变量而不是实例变量driver

Python中的类：AttributeError

1 个答案: