title: Start IDLE with python 3 on Linux (python 2.7 installed alongside)
body: <p>I initially had python 2.7, which often comes bundled with the OS (currently using Linux Mint 12). I wanted to try python 3, so I installed it alongside python 2. All fine there, I can run both versions in terminal by calling either <code>python</code> or <code>python3</code>. However, there seems to be no way to start IDLE with python 3. Is there some flag that I can pass to IDLE when I start it so that I can pick which version of python I would like it to run?</p>
  
  <p>E.g. (these don't work)
  <code>idle3</code> or <code>idle --shell=python3</code> or something like that. Hope you get what I mean. I read about pointing to a different executable in <a href="https://stackoverflow.com/questions/1630728/no-idle-for-python-3">this question about IDLE for Python 3 (on Vista)</a>. However, I can't seem to do the analogous thing on Linux.</p>