title: E: Package 'python3-setuptools' has no installation candidate
body: <p>When i tried to install setup-tools for python3 then it shows this error.
  Command-</p>
  
  <pre><code>sudo apt-get install python3-setuptools
  </code></pre>
  
  <p>I've got the following error:</p>
  
  <pre><code>Reading package lists... Done
  Building dependency tree       
  Reading state information... Done
  E: Unable to locate package python3-pip
  </code></pre>