title: Python display .ply, .stl, .igs, .step image
body: <p>I am looking for a way to display a .ply, .stl, .step, or .igs in a python window of any sort. The idea is that my students are moving a robot holding a part and i want to show that part also moving in 3d.</p>
  
  <p>The formats listed above are the ones that i can produce. </p>
  
  <p>I have explored Panda3D, OPenGL, Vpython and Blender. The only reason i dont use blender is because i want just a window and real-time.</p>
  
  <p>Thanks for the help. </p>
  
  <p>and if you have examples that would be just awesome. </p>