title: programmatically interact with webpage
body: <p><a href="http://www.apsalin.com/convert-cartesian-to-geodetic.aspx" rel="nofollow">http://www.apsalin.com/convert-cartesian-to-geodetic.aspx</a></p>
  
  <p>I would like to write out a python program that opens the above webpage, fills out 3 text boxes with specific values, hits the "convert" button, and extracts the answer. What is the best way to accomplish this? I've heard of mechanize but that's not available for Python 3.</p>
  
  <p>If there's nothing available to do this in python, what would be a good alternative way of automating website interaction? I'm open to any type of program or programming language.</p>