title: Fatal Python error when attempting to upgrade pip
body: <p>I'm trying to upgrade pip to version 8.0.2 from version 7.1.2, however, when I type <code>python -m pip install --upgrade pip</code>, into the command line, it returns:</p>
  
  <pre><code>Fatal Python error: Py_Initialize: unable to load the file system codec
  ImportError: No module named 'encodings'
  
  Current thread 0x00007cf8 (most recent call first):  
  </code></pre>
  
  <p>My <code>pip --version</code> returns:</p>
  
  <pre><code>pip 7.1.2 from C:\Users\Owner\Anaconda3\lib\site-packages (python 3.5)
  </code></pre>
  
  <p>I'm running Windows 10, 64-bit operating system.</p>
  
  <p>EDIT: Additionally, when I type only <code>python</code> in command line, it returns:</p>
  
  <pre><code>C:\Users\Owner&gt;python
  Fatal Python error: Py_Initialize: unable to load the file system codec
  ImportError: No module named 'encodings'
  
  Current thread 0x00007cf8 (most recent call first):
  </code></pre>
  
  <p>And python "stops working."</p>
  
  <hr>
  
  <p>EDIT 2: My PATH:</p>
  
  <blockquote>
    <p>PATH=C:\Program Files (x86)\NVIDIA
    Corporation\PhysX\Common;C:\Python27\;C:\Python27\Scripts;C:\Program
    Files (x86)\Python332\;C:\ProgramData\Oracle\Java\javapath;C:\Program
    Files\Common Files\Microsoft Shared\Windows Live;C:\Program Files
    (x86)\Common Files\Microsoft Shared\Windows
    Live;C:\Windows\system32;C:\Windows;C:\Windows\System32\Wbem;C:\Windows\System32\WindowsPowerShell\v1.0\;C:\Program
    Files (x86)\Windows Live\Shared;C:\Program Files (x86)\MiKTeX
    2.9\miktex\bin\;C:\Python334\Tools\Scripts;C:\WINDOWS\system32;C:\WINDOWS;C:\WINDOWS\System32\Wbem;C:\WINDOWS\System32\WindowsPowerShell\v1.0\;C:\Program
    Files<br>
    (x86)\Skype\Phone\;C:\Users\Owner\Anaconda3;C:\Users\Owner\Anaconda3\Scripts;C:\Users\Owner\Anaconda3\Library\bin</p>
  </blockquote>
  
  <hr>
  
  <p>I do have multiple versions of python installed, I realize that could contribute to the problem, but if it actually does or what to do about it.</p>