Test local config for flask (using in heroku)

gistfile1.txt

import os
from flask import Flask

PROJECT_ROOT = os.path.dirname(os.path.realpath(__file__))

app = Flask(__name__,
            static_folder=os.path.join(PROJECT_ROOT, 'public'),
            static_url_path='/public')

try:
	import local_config
	app.config.from_pyfile('local_config.py')
except ImportError:
	pass

#inside local_config.py:  DEBUG=True

alternatively for heroku I now do:
https://devcenter.heroku.com/articles/config-vars