title: Change user agent with selenium webdriver and python
body: <pre><code>from selenium import webdriver
  from selenium.webdriver.common.by import By
  from selenium.webdriver.support.ui import Select
  import os
  xpaths = { 'video' :   "//video[@id='video']",
       }
  
  from selenium import webdriver
  profile = webdriver.FirefoxProfile()
  profile.set_preference("general.useragent.override", "Mozilla/5.0 (X11;     Linux x86_64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/41.0.2227.0   Safari/537.36")
  driver = webdriver.Firefox(profile)
  mydriver = webdriver.Firefox()
  baseurl = "XXXX"
  mydriver.get(baseurl)
  </code></pre>
  
  <hr>
  
  <p>It's not changing the user agent. I want the user agent to be chrome. I don't know what's wrong...</p>
  
  <p>And also, here's what i'd like it to do: Go to the website, if it redirects to another url > Goes back to main page and keeps doing that until it finds (id:video)
  I have not implemented this yet because i have no idea how to...
  The website i'm trying to automate got a vid and it appears sometimes. What i'd like this to do is keep visiting the website until it finds the id:video clicks it and waits.</p>
  
  <p>Help is appreciated :)</p>