title: Error while installing setuptools in python 3
body: <p>When I try to install setuptools in python 3. I get the following error.</p>
  
  <p>python3-setuptools : Depends: python3 (>= 3.1.2-8~) but it is not going to be installed
                        Depends: python3-pkg-resources (= 0.6.24-1ubuntu1) but it is not going to be installed
  E: Unable to correct problems, you have held broken packages.</p>
  
  <p>I have python 3.6 installed. Still its giving the error.
   How to rectify the broken packages?</p>