Dillinger requires Python v3.4+.
Install the dependencies start the server.
$ git clone https://github.com/myrubapa/python_uzgeeks_meetup.git
$ cd python_uzgeeks_meetup
$ virtualenv -p /usr/bin/python3 .venv
$ source .venv/bin/activate
$ pip install -r requirements.txt
$ source .venv/bin/activate
$ cd sample1/
$ python app.py