Invest program modification??

[pythonnewbie10]

'''calculate the future value of an investment after 10 years''' 

def calcValue( initialValue, interestRate ): 
    period = 10 
    investmentValue = initialValue 

    for i in range(period): 
        investmentValue = investmentValue * ( 1 + interestRate ) 

    return investmentValue 

def main(): 
    principal = int(raw_input("Enter initial investment amount: ")) 
    interest = float(raw_input("Enter interest rate as a percentage: ")) / 100 

    finalValue = calcValue( principal, interest ) 
    print "Final value of the investment is $%0.2f" % finalValue 

main()

i need to modify this program so that a user can specify the period of invest and so the user can make additional yearly investments.

i'm just unsure how to approach the question

Any sugesstions?

[TrustyTony]

See how period is used and how it's use can become similar to other values in the formula.

Tony

[pythonnewbie10]

See how period is used and how it's use can become similar to other values in the formula.

Tony

So to take the period = 10 out and turn it into raw_input ??

[pythonnewbie10]

actually i think ive worked it out

Thanks tony
:)

[TrustyTony]

Can you mark solved or tell what is still unclear/post results?