python – WebdriverWait显示TimeoutException,如果我使用sleep.time它可以正常工作

Traceback (most recent call last):
  File "C:\Users\riaz.ladhani\PycharmProjects\Selenium Webdriver\ClearCore\TestCases\AdministrationPage_TestCase.py", line 30, in test_add_Project
    administration_page = login_page.clickAdministration()
  File "C:\Users\riaz.ladhani\PycharmProjects\Selenium Webdriver\ClearCore\Pages\login.py", line 46, in clickAdministration
    WebDriverWait (self.driver, 10).until(lambda d: self.driver.find_element(*MainPageLocators.AdministrationButton_xpath).click())
  File "C:\Python27\lib\site-packages\selenium\webdriver\support\wait.py", line 75, in until
    raise TimeoutException(message, screen, stacktrace)
TimeoutException: Message: 

如果我使用time.sleep(10)它可以正常工作并单击元素.我暂时将所有链接恢复到time.sleep,直到我可以让WebdriverWait正常工作.

我的WebdriverWait代码片段是：

class LoginPage(BasePage):

    #Click Administration from top menu
    def clickAdministration(self):
        WebDriverWait (self.driver, 10).until(lambda d: self.driver.find_element(*MainPageLocators.AdministrationButton_xpath).click())
        #time.sleep(10)
        return AdministrationPage(self.driver)

进口是：

from selenium.webdriver.support.ui import WebDriverWait
from selenium.common.exceptions import TimeoutException


class LoginPage_TestCase(unittest.TestCase):

     def test_add_Project(self):
        login_page = login.LoginPage(self.driver)
        login_page.userLogin_valid()
        administration_page = login_page.clickAdministration()

我的WebdriverWait语法是否正确？为什么TimeoutException？

如果我使用time.sleep(secs),它可以正常工作但不是最有效的方法.

在这种情况下,内置element_to_be_clickable非常适合,例如：

from selenium.webdriver.support import expected_conditions as EC
from selenium.webdriver.common.by import By

wait = WebDriverWait(self.driver, 10)
element = wait.until(EC.element_to_be_clickable((By.XPATH, '//div[@class="test"]')))
element.click()