https://blog.jetbrains.com/pycharm/2015/11/python-3-5-type-hinting-in-pycharm-5/ probably a better way to enforce the product_spec format than all the checks I do
https://blog.jetbrains.com/pycharm/2015/11/python-3-5-type-hinting-in-pycharm-5/
probably a better way to enforce the product_spec format than all the checks I do