title: How to install pip3 version 3.5?
body: <p>I've seen a version of pip3.5 installed on a Ubuntu 14.04 but i'm unsure how it was installed as there does not appear to be pip3.5 available.</p>
  
  <p>I've tried : </p>
  
  <pre><code>pip3 install --upgrade pip3==3.5
  Collecting pip==3.5
    Could not find a version that satisfies the requirement pip==3.5 (from versions: 0.2, 0.2.1, 0.3, 0.3.1, 0.4, 0.5, 0.5.1, 0.6, 0.6.1, 0.6.2, 0.6.3, 0.7, 0.7.1, 0.7.2, 0.8, 0.8.1, 0.8.2, 0.8.3, 1.0, 1.0.1, 1.0.2, 1.1, 1.2, 1.2.1, 1.3, 1.3.1, 1.4, 1.4.1, 1.5, 1.5.1, 1.5.2, 1.5.3, 1.5.4, 1.5.5, 1.5.6, 6.0, 6.0.1, 6.0.2, 6.0.3, 6.0.4, 6.0.5, 6.0.6, 6.0.7, 6.0.8, 6.1.0, 6.1.1, 7.0.0, 7.0.1, 7.0.2, 7.0.3, 7.1.0, 7.1.1, 7.1.2, 8.0.0, 8.0.1, 8.0.2, 8.0.3, 8.1.0, 8.1.1, 8.1.2, 9.0.0, 9.0.1)
  No matching distribution found for pip==3.5
  </code></pre>
  
  <p>How to install pip version 3.5 ?</p>
  
  <p>Update : </p>
  
  <p>I installed <code>numpy</code> via : </p>
  
  <pre><code>pip3 install numpy
  Requirement already satisfied (use --upgrade to upgrade): numpy in /usr/local/lib/python3.4/dist-packages
  </code></pre>
  
  <p>Attempting to use <code>numpy</code> in python3.5 causes error : </p>
  
  <pre><code>/usr/local/bin/python3.5
  Python 3.5.0 (default, Jan 20 2017, 10:14:23)
  [GCC 4.8.4] on linux
  Type "help", "copyright", "credits" or "license" for more information.
  &gt;&gt;&gt;
  &gt;&gt;&gt; import numpy as np
  Traceback (most recent call last):
    File "&lt;stdin&gt;", line 1, in &lt;module&gt;
  ImportError: No module named 'numpy'
  </code></pre>
  
  <p>But numpy is installed : </p>
  
  <pre><code>pip3 install numpy
  Requirement already satisfied (use --upgrade to upgrade): numpy in /usr/local/lib/python3.4/dist-packages
  </code></pre>
  
  <p>I incorrectly assumed that to fix I should update to pip version 3.5 to match python version 3.5 . </p>
  
  <p>So question now is how to install <code>numpy</code> to python version 3.5 ?</p>