等待

为了处理一些ajax的等待

selenium.webdriver.support.wait.WebDriverWait(driver, timeout, poll_frequency=0.5, ignored_exceptions=None)

until(method, message='')

Calls the method provided with the driver as an argument until the return value is not False.

until_not(method, message='')

Calls the method provided with the driver as an argument until the return value is False.