Question

标题建议需要等待动态加载的材料。每次滚动到页面末尾时都会显示该材料。

目前正尝试通过以下方式执行此操作：

driver.execute_script("window.scrollTo(0, document.body.scrollHeight);")
WebDriverWait(driver, 5).until(expected_conditions.presence_of_element_located(
    (By.XPATH, "//*[@id='inf-loader']/span[1][contains(@style, 'display: inline-block')]")))

xpath是问题吗（不是那么熟悉）？即使在使用硒滚动时显示样式确实发生变化，它也会保持超时。

Answer 1

我会等待display样式更改为inline-block并使用自定义预期条件并使用value_of_css_property()：

from selenium.webdriver.support import expected_conditions as EC

class wait_for_display(object):
    def __init__(self, locator):
        self.locator = locator

    def __call__(self, driver):
        try:
            element = EC._find_element(driver, self.locator)
            return element.value_of_css_property("display") == "inline-block"
        except StaleElementReferenceException:
            return False

用法：

wait = WebDriverWait(driver, 5)
wait.until(wait_for_display((By.XPATH, "//*[@id='inf-loader']/span[1]")))

您也可以尝试tweak the poll frequency让它更频繁地检查条件：

wait = WebDriverWait(driver, 5, poll_frequency=0.1)  # default frequency is 0.5

使selenium驱动程序等到元素样式属性发生更改

1 个答案: