Switch to the frame that contains the login prompts in Selenium - selenium

Question

I'm trying to use Selenium to log into ESPN. A solution that used to work is detailed here. In order to log in I need to find the frame that has the username and password fields and switch to that frame. Unfortunately, that numerical index of that frame isn't always the same. I decided to just try them all, but as soon as I've switched to one frame, switching to the next fails with selenium.common.exceptions.StaleElementReferenceException: Message: The element reference of <iframe class="ob-pifr"> stale: either the element is no longer attached to the DOM or the page has been refreshed. So I'm looking for
A way to switch frames without the StaleElementReferenceException
A way to check whether a frame is the one I want before I switch to it
Some other solution, though I'd prefer something introspective to a magic (and presumably fragile) formula like "It's always the third frame from the end)
Here's some sample code that leads to the StaleElementReferenceException:
from time import sleep
from selenium import webdriver
from selenium.webdriver.support.ui import WebDriverWait
from selenium.webdriver.support import expected_conditions as EC
from selenium.webdriver.common.by import By
from selenium.common.exceptions import NoSuchElementException
driver = webdriver.Firefox(executable_path = '/usr/local/bin/geckodriver')
driver.get("http://games.espn.go.com/ffl/signin")
WebDriverWait(driver, 1000).until(EC.presence_of_all_elements_located((By.XPATH,"(//iframe)")))
elem = None
frms = driver.find_elements_by_xpath("(//iframe)")
print("Found {} frames", len(frms)) # Varies from 6 to 8
for count, frm in enumerate(frms):
print("Trying frm[{}]".format(count))
driver.switch_to.frame(frm)
sleep(2)
try:
# The command below will fail the second time around with
# `either the element is no longer attached to the DOM or the page has been refreshed`
elem = driver.find_element_by_xpath("(//input)[1]")
except NoSuchElementException:
pass
else:
break

Answer 1

Frame id is disneyid-iframe which opens the login popup So first you need to switch into it
driver.switch_to_frame(driver.find_element_by_id("disneyid-iframe"))
and then perform sendkeys like
driver.find_element_by_xpath("//input[#type='email']").send_keys("emailid")
driver.find_element_by_xpath("//input[#type='password']").send_keys("password")
Other way to switch in frame is ExplicitWait. It wait until frame available once there then it get switched in
wait = WebDriverWait(driver, 60)
wait.until(EC.frame_to_be_available_and_switch_to_it((By.ID, "disneyid-iframe")))
Your Final code will be :
from time import sleep
from selenium import webdriver
from selenium.webdriver.support.ui import WebDriverWait
from selenium.webdriver.support import expected_conditions as EC
from selenium.webdriver.common.by import By
from selenium.common.exceptions import NoSuchElementException
driver = webdriver.Firefox(executable_path = '/usr/local/bin/geckodriver')
driver.get("http://games.espn.go.com/ffl/signin")
wait = WebDriverWait(driver, 60)
wait.until(EC.frame_to_be_available_and_switch_to_it((By.ID, "disneyid-iframe")))
driver.find_element_by_xpath("//input[#type='email']").send_keys("emailid")
driver.find_element_by_xpath("//input[#type='password']").send_keys("password")
driver.find_element_by_xpath("//button[#type='submit']").click()
Note : Please check syntax as per Python.