from selenium import webdriver
from selenium.webdriver import ActionChains
from selenium.webdriver.common.by import By
from selenium.webdriver.common.keys import Keys
from selenium.common.exceptions import NoSuchElementException

from selenium.webdriver.support.ui import WebDriverWait
from selenium.webdriver.support import expected_conditions as EC

driver = webdriver.Chrome(executable_path=r'C:\ChromeDriver\chromedriver.exe')
driver.get("https://login.imagesilo.com/Home/Login")

wait = WebDriverWait(driver, 10)

search_input = wait.until(EC.presence_of_element_located((By.ID, "txtPassword")))
search_input2 = wait.until(EC.presence_of_element_located((By.ID, "txtUserName")))

cmd = "document.getElementById('txtUserName').value='2';"
driver.execute_script(cmd)

elemental=driver.find_element_by_id("txtPassword")
driver.execute_script("arguments[0].value = 'karp1';", elemental)