title: pip installation error command 'python setup.py egg_info' failed with error code 1
body: <p>I am trying to install monkeytype on Ubuntu terminal using the command:</p>
  
  <pre><code>pip install monkeytype 
  </code></pre>
  
  <p>but I'm getting an error saying:</p>
  
  <pre><code>Command "python setup.py egg_info" failed with error code 1 
  </code></pre>
  
  <p>Here is the full log:</p>
  
  <pre><code>bash-4.3$ pip install monkeytype
  DEPRECATION: Python 2.7 will reach the end of its life on January 1st, 2020. Please upgrade your Python as Python 2.7 won't be maintained after that date. A future version of pip will drop support for Python 2.7.
  Collecting monkeytype
    Using cached https://files.pythonhosted.org/packages/5f/59/43bc6e44d69bd268e545fdfacdd6866362aca57ac894bbc3177b5455c06a/MonkeyType-18.2.0.tar.gz
  Collecting retype (from monkeytype)
    Using cached https://files.pythonhosted.org/packages/6e/da/ca9f5560f051d2ed79a52de1170903e3ff8ad011cff56c65abfcff38d372/retype-17.12.0.tar.gz
      ERROR: Complete output from command python setup.py egg_info:
      ERROR: Traceback (most recent call last):
        File "&lt;string&gt;", line 1, in &lt;module&gt;
        File "/tmp/pip-install-mCIobj/retype/setup.py", line 14, in &lt;module&gt;
          assert sys.version_info &gt;= (3, 6, 0), "retype requires Python 3.6+"
      AssertionError: retype requires Python 3.6+
      ----------------------------------------
  ERROR: Command "python setup.py egg_info" failed with error code 1 in /tmp/pip-install-mCIobj/retype/
  </code></pre>