selenium.common.exceptions.NoSuchElementException: Message: Unable to locate element:

Question

I\'m trying to automatically generate lots of users on the webpage kahoot.it using selenium to make them appear in front of the class, however, I get this error message when

Answer 1

Could be a race condition where the find element is executing before it is present on the page. Take a look at the wait timeout documentation. Here is an example from the docs

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

driver = webdriver.Firefox()
driver.get("http://somedomain/url_that_delays_loading")
try:
    element = WebDriverWait(driver, 10).until(
        EC.presence_of_element_located((By.ID, "myDynamicElement"))
    )
finally:
    driver.quit()

Answer 2

it just means the function is executing before button can be clicked. Example solution:

from selenium import sleep
# load the page first and then pause
sleep(3)
# pauses executing the next line for 3 seconds

Answer 3

this worked for me (the try/finally didn't, kept hitting the finally/browser.close())

from selenium import webdriver

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

driver = webdriver.Firefox()
driver.get('mywebsite.com')

username = None
while(username == None):
    username = WebDriverWait(driver, 10).until(
        EC.presence_of_element_located((By.ID, "username"))
    )
username.send_keys('myusername@email.com')

Answer 4

You can also use below as an alternative to the above two solutions:

import time
time.sleep(30) 

Answer 5

Also for some, it may be due to opening the new tabs when clicking the button(not in this question particularly). Then you can switch tabs by command.

driver.switch_to.window(driver.window_handles[1]) #for switching to second tab

Answer 6

Looks like it takes time to load the webpage, and hence the detection of webelement wasn't happening. You can either use @shri's code above or just add these two statements just below the code driver = webdriver.Firefox():

driver.maximize_window() //For maximizing window
driver.implicitly_wait(20) //gives an implicit wait for 20 seconds