title: Python 3.2 installation on Ubuntu 12.04
body: <p>I am trying to install python 3.2.3 on my ubuntu machine, which is 12.04, but I do not want to disturb the current 2.7 installation. After searching on the internet, I found a reference <a href="http://www.unixmen.com/howto-install-python-3-x-in-ubuntu-debian-fedora-centos/">here</a>. I followed the instructions, but when trying to run </p>
  
  <p><code>sudo apt-get install build-essential libncursesw5-dev libreadline5-dev libssl-dev libgdbm-dev libc6-dev libsqlite3-dev tk-dev</code></p>
  
  <p>I get an error saying that </p>
  
  <blockquote>
    <p>E: Package 'libreadline5-dev' has no installation candidate.</p>
  </blockquote>
  
  <p>What am I missing? Is there any other way to install python 3.2 on ubuntu? If I use <code>apt-get</code>, will it disturb the current installation?</p>