def introduction ():
    print """
Simple interest calculator
-------------------------------
With given values for the principle, rate and time period this program
will calculate the interest accrued as well as the new amount (principle
plus interest).
    """
def getInputs ():
    principle = input("Enter the original principle: ")
    rate = input("Enter the yearly interest rate %")
    rate = rate / 100.0
    time = input("Enter the number of years that money will be invested: ")
    return principle, rate, time

def calculate (principle, rate, time):
    interest = principle * rate * time
    amount = principle + interest
    return interest, amount

def display (principle, rate, time, interest, amount):
    temp = rate * 100
    print ""
    print "With an investment of $", principle, " at a rate of", temp, "%",
    print " over", time, " years..."
    print "Interest accrued $", interest
    print "Amount in your account $", amount

# Main function
def main ():
    principle = 0
    rate = 0
    time = 0
    interest = 0
    amount = 0

    introduction ()
    principle, rate, time = getInputs ()
    interest, amount = calculate (principle, rate, time)
    display (principle, rate, time, interest, amount)

main ()