title: Setting default Python grammar version in Eclipse PyDev
body: <p>I have a fresh installation of Eclipse and PyDev, on a Mac that has Python 2.7 and Python 3.6 installed. Whenever I start a new PyDev project, it asks me to choose a grammar version, and 2.7 is the default. How can I change it so 3.6 is the default grammar?</p>
  
  <p>In Eclipse preferences -> PyDev -> Interpreters -> Python Interpreter I only have Python 3.6 configured; where else should I look?</p>
  
  <p><a href="https://i.stack.imgur.com/9mssR.png" rel="nofollow noreferrer"><img src="https://i.stack.imgur.com/9mssR.png" alt="Eclipse preferences screenshot"></a></p>