I encountered with situation that some from my friends take loans from Norwegian banks. It is a little bit hard to calculate loan properly. Therefore, I create a small command-line to calculate different banks conditions and offers. I have used as a main parameters total credit sum, monthly payment, yearly percentage, monthly payment fee.
The code is compatible with both Python2/Python3. In order to run it, you need to install python and run code as python credit_calculator.py changing parameters based on the loan.