How to handle No SuchElementException in python automation,

Question

elem = driver.find_element_by_id("msgButtonAffirm")
if elem.is_displayed():
    elem.click()
    print("conform popup is avalable and click")
else:
    print "Pop-up is not visible"

Answer 1

You can use find_elements_by_id and check if there is anything in the list

elem = driver.find_elements_by_id("msgButtonAffirm")
if elem and elem[0].is_displayed():
    elem[0].click()
    print("conform popup is avalable and click")
else:
    print("Pop-up is not visible")

Answer 2

You can import the exception and work with that as following:

from selenium.common.exceptions import NoSuchElementException

try:
    elem = driver.find_element_by_id("msgButtonAffirm")
    elem.click()
    print("conform popup is avalable and click")
except NoSuchElementException:  
    print("Pop-up is not visible")

Answer 3

You need to take care of a couple of things:

• While clicking on confirmation popups you shouldn't major focus shouldn't be on handling NoSuchElementException
• Historically, in majority of the cases confirmation popups resides within modal dialoge boxes so you need to induce WebDriverwait.

The relevant HTML would have helped us to analyze the issue in a better way. However, as per the mentioned points, you need to to induce WebDriverWait for expected_conditions as element_to_be_clickable() and you can use either of the following Locator Strategies:

• Using CSS_SELECTOR:

  try:
      WebDriverWait(driver, 20).until(EC.element_to_be_clickable((By.CSS_SELECTOR, "#msgButtonAffirm"))).click()
      print ("Pop-up was clickable and clicked")
  except TimeoutException: 
      print ("Pop-up was not clickable")
  

• Using XPATH:

  try:
      WebDriverWait(driver, 20).until(EC.element_to_be_clickable((By.XPATH, "//*[@id='msgButtonAffirm']"))).click()
      print ("Pop-up was clickable and clicked")
  except TimeoutException: 
      print ("Pop-up was not clickable")
  

• Note : You have to add the following imports :

  from selenium import webdriver
  from selenium.common.exceptions import TimeoutException
  from selenium.webdriver.support.ui import WebDriverWait
  from selenium.webdriver.common.by import By
  from selenium.webdriver.support import expected_conditions as EC