title: Downloading Image with no Extension
body: <p>I have searched a lot but haven't found a good answer on how to use BeautifulSoup and urllib to use a src link and download the image when it is without an extension, for example, the image for the Facebook app icon @ 
  <a href="https://play.google.com/store/apps/details?id=com.facebook.katana" rel="nofollow">https://play.google.com/store/apps/details?id=com.facebook.katana</a> is <a href="https://lh3.googleusercontent.com/ZZPdzvlpK9r_Df9C3M7j1rNRi7hhHRvPhlklJ3lfi5jk86Jd1s0Y5wcQ1QgbVaAP5Q=w300-rw" rel="nofollow">https://lh3.googleusercontent.com/ZZPdzvlpK9r_Df9C3M7j1rNRi7hhHRvPhlklJ3lfi5jk86Jd1s0Y5wcQ1QgbVaAP5Q=w300-rw</a> - without an extension.</p>
  
  <p>What library or method should I be using to download such images?</p>