project_12_interest_payment_calculator.py

# Project 12 
# Interest Payment Calculator

def main():
    print("This is a monthly payment loan calculator")
    print("")

    principal = float(input("Input the loan amount: "))
    apr = float(input("Input the annual interest rate: "))
    years = int(input("Input amount of years: "))

    monthly_interest_rate = apr / 1200
    months = years * 12
    monthly_payment = principal * monthly_interest_rate / (1 - (1 + monthly_interest_rate) ** (- months))

    print("The monthly payment for this loan is: %0.2f" % monthly_payment)


main()