title: Fatal error in launcher: When Check pip Version
body: <p>When i check pip version to install pandas in Python 3.6.6 show below error..
  I am beginner for python Please can tell me how to solve that error?</p>
  <p>C:\python36\Scripts&gt;pip -V</p>
  <p>'Fatal error in launcher: Unable to create process using '&quot;c:\python36_64\python.exe&quot;  &quot;C:\python36\Scripts\pip.exe&quot; -V': ??????????????????'</p>
  <p>when upgrade pip show Requirement already satisfied</p>
  <p>C:\python36&gt;python -m pip install --upgrade pip
  Requirement already satisfied: pip in c:\python36\lib\site-packages (20.3.1)</p>
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