title: Installing same packages in pip3 as in pip
body: <p>I am using both python 2.7 now added python 3.4.</p>
  
  <p>How I could easy migrate packages installed via pip to pip3?</p>
  
  <p>A followup for the future: is there a way to install packages to both 2.7 and 3.4 version of python?</p>
  
  <p><strong>Edit 1: combining answers.</strong>
  <strong>Edit 2: moved solution to an answer.</strong></p>