title: The system cannot find the path specified while executing command python setup.py egg_info
body: <p>When trying to install tornado with pip i keep getting this error:</p>
  <pre><code>  Using cached tornado-6.1.tar.gz (497 kB)
    ERROR: Error [WinError 3] The system cannot find the path specified while executing command python setup.py egg_info
    Preparing metadata (setup.py) ... error
  ERROR: Could not install packages due to an OSError: [WinError 3] The system cannot find the path specified
  </code></pre>
  <p>I have re-installed python, updated PIP, checked that setuptools is installed, checked enviroment path variables, but nothing seems to work.</p>
  <p>I couldnt find any directly simmilair issues online, and solutions for other somewhat related issues has not worked.</p>
  <p>thank you</p>