Resistor Calculator is a simply app to calculate and check resistance of the resistor by colors. This form is available for 4 and 5 color bracelets.
I assume you already setup with virtual enviroment (virtualenv).
$ pip install Django # get new version
$ git clone https://github.com/agusmakmun/resistor-calculator.git
$ cd resistor-calculator/
$ ./manage.py runserver
And let checkout at http://127.0.0.1:8000/ to your browser.