title: Login to website with Python and Selenium and subprocess problem
body: <p>I made a script from a tutorial that can login to a website, but in a way that a script open the website. I want that the script is run in an already open website and not the script open the site. I hope it's understandable.
  I created another script with subprocess and I want to combine those two together. I tried to first open the tabs and then run the login script, but the login script is opening a new window and don't run in the opened one</p>
  
  <pre><code> url = "www.example.com"
  
  driver = webdriver.Firefox(executable_path="C:\\***\\***\\***\\geckodriver.exe")
  
  driver.get(url)
  
  driver.find_element_by_name('nev').send_keys(username)
  driver.find_element_by_name('pass').send_keys(password)
  
  time.sleep(1)
  
  driver.find_element_by_class_name('submit_btn').click()
  </code></pre>