Selenium Timeout Exception python

Question

So, i was creating a signup machine using selenium. When this page loads to https://mail.protonmail.com/create/new?language=en it is unable to find element by id/xpath of username. On the other side it was able to find password,passwordc elements. I tried to use WebDriverWait function but it is giving timeout error. Tried many things but this thing is still giving me error. If possible then suggest a way to find element of username on the final page or a perfect WebDriverWait code. Below is my code

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

url = 'https://protonmail.com/'
driver = webdriver.Chrome('C://Users/AAA/Desktop/chromedriver.exe')
driver.get(url)

driver.find_element_by_xpath('//*[@id="bs-example-navbar-collapse-1"]/ul/li[8]/a').click()
time.sleep(2)
driver.find_element_by_xpath('//*[@id="signup-plans"]/div[5]/div[1]/div[1]/div/div[1]/h4').click()
time.sleep(1)
driver.find_element_by_id('freePlan').click()
time.sleep(1)
wait = WebDriverWait(driver, 10)
element = wait.until(EC.element_to_be_clickable((By.ID, "username")))
driver.find_element_by_xpath('//*[@id="username"]').send_keys('santaking44455')
time.sleep(1)
driver.find_element_by_id('password').send_keys('25J8e5b8')
time.sleep(1)
driver.find_element_by_id('passwordc').send_keys('25J8e5b8')```

Answer 1

You can't find it because it's in an iframe tag higher up in the html source. Switch first to the iframe, then you should be able to interact with the element.

iframe=driver.find_element_by_xpath('//*[@title="Registration form"]')
driver.switch_to.frame(iframe)
driver.find_element_by_xpath('//*[@id="username"]').send_keys('santaking44455')