Selenium Webdriver NoSuchElementException

Question

我将Selenium webdriver与Python结合使用来打印元素的内容，但是如果页面上不存在该元素，则会破坏我的代码并返回异常错误。

print (driver.find_element_by_id("TotalCost").text)

NoSuchElementException: Message: no such element: Unable to locate element 
{"method":"id","selector":"TotalCost"}

我该如何解决此错误？

Answer 1

在try...except块中捕获异常：

from selenium.common.exceptions import NoSuchElementException

try:
    print(driver.find_element_by_id("TotalCost").text)
except NoSuchElementException:
    print("Element not found")    # or whatever you want to print, or nothing

为了清楚起见，也可以用这种方式做到这一点：

try:
    elem = driver.find_element_by_id("TotalCost")
except NoSuchElementException:
    pass
else:
    print(elem.text)