title: Opening a site on Firefox using webbrowser module
body: <p>I'm trying to use the 'webbrowser' module to access a website on my Firefox. After going through some of the posts on this site, I found that this piece of code works for most of them:</p>
  
  <pre><code>import webbrowser
  webbrowser.get('firefox').open('www.google.com')
  </code></pre>
  
  <p>However, I get the following error:</p>
  
  <pre><code>raise Error("could not locate runnable browser")
  Error: could not locate runnable browser
  </code></pre>
  
  <p>What seems to be wrong with my code? </p>
  
  <p>PS: Firefox is not my default browser.</p>