title: Python IDLE: Change Python Version
body: <p>I have Python 2.x and 3.x on my machine (Mac OS X 10.6). 
  For some things I want to use ver 2, but for others I want ver 3. I like the IDLE software for editing/running, but it always uses version 3.</p>
  
  <p><strong>Is there any way to change the version of the interpreter that IDLE uses?</strong></p>
  
  <p>Thanks!</p>