title: Set Flask environment to development mode as default?
body: <p>Every time I start up my flask app the environment variable is set to production.  I want to have it set to development mode by default.  Otherwise every time I start my app i have to run ..</p>
  
  <p><code>export FLASK_ENV=development</code></p>
  
  <p>How can I set environment's default value as development in every startup?</p>
  
  <p>EDIT: I am using flask in a virtual environment on a raspberry pi.</p>