Need assistance with python code. Problem statement: Design the solution to the following problem and implement it in a Python program. Implement a program that allows the user to choose from a menu to calculate the future value of an investment, the present value (how much you need to invest) for a target investment value, or the monthly payment for a loan. The formulas for these quantities are given as follows: A: amount (present value, target value, or loan amount depending on what is calculated) r: interest rate (Note: the user will enter 3.5 for 3.5%. When substituting in the formula, the user input needs to be decimal, that is, 0.035 which is 3.5/100 t= time (number of years for the investment or the loan) (See attached image for reference) Your program will provide a menu to the user with the following options: F - Future Value P - Present Value M- Monthly Payment Q - Quit If the user chooses F, P, or M (or lowercase versions of these letters), then the program will perform the necessary action(s) (see below) and then display the menu again to get the user's choice. If the user chooses Q or q then the program will display a "Good Bye" message and end. If the user chooses any other key, the program will print "Invalid input" on the screen and display the menu again to get user's choice. In this program you are required to implement 4 functions: displayMenu() This function will be called to display the menu. It will print a menu as shown above. (Note that it has no parameters and no return) calculateFutureValue(amount,interest_rate,duration) This function will be called if the user chooses option F. It will calculate the future value for the given parameters and return the future value. (This function does NOT print anything. It does NOT ask the user for input) calculatePresentValue(amount,interest_rate,duration) This function will be called if the user chooses option P. It will calculate the present value for the given parameters and return the present value. (This function does NOT print anything. It does NOT ask the user for input) calculateMonthlyPayment(loan_amount, interest_rate, duration) This function will be called if the user chooses option M. It will calculate the monthly payment of a loan for the given parameters and return the monthly payment. (This function does NOT print anything. It does NOT ask the user for input) Here is the code that I have: def displayMenu(): print("Welcome to your financial calculator!") print("F - Future Value") print("P - Present Value") print("M - Monthly Payment") print("Q - Quit") return str(input("Please select on of the options above: ")) def calculateFutureValue(amount, interest_rate, duration): FutureValue = amount * ( 1 + interest_rate) ** duration #print("Future value of your investment is", round(FutureValue, 2)) return round(FutureValue, 2) def calculatePresentValue(amount, interest_rate, duration): PresentValue = amount * ( 1 + interest_rate) ** -duration #print("Present value of your target amount is", round(PresentValue, 2)) return round(PresentValue, 2) def calculateMonthlyPayment(loan_amount, interest_rate, duration): MonthlyPayment = (Amount * (interest_rate/12) * (1 + (interest_rate/12)) ** duration *12) / ((1 + (interest_rate/12))**duration * 12 - 1) #print("Monthly payment for your loan is", round(MonthlyPaymnet, 2)) return round(MonthlyPayment, 2) def main(): while True: choice = displayMenu() if choice == ["F"] or ["f"]: amount = float(input(print("Please enter the investment amount:"))) interest_rate = float(input(print("Please enter the interest rate:"))) duration = float(input(print("For how many years will you invest?:"))) calculateFutureValue(amount, interest_rate, duration) print("Future value of your investment is", FutureValue) elif choice == ["P"] or ["p"]: amount = float(input(print("Please enter the target amount:"))) interest_rate = float(input(print("Please enter the interest rate:"))) duration = float(input(print("In how many year you want to hit the target?"))) calculatePresentValue(amount, interest_rate, duration) print("Present value of your target amount is", PresentValue) elif choice == ["M"] or ["m"]: loan_amout = float(input(print("Please enter the loan amount:"))) interest_rate = float(input(print("Please enter the interest rate:"))) duration = float(input(print("In how many years wil you pay?"))) calculateMonthlyPayment(loan_amount, interest_rate, duration) print("Monthly payment for your loan is", MonthlyPaymnet) elif choice == ["Q"] or ["q"]: print("Thank you for using my financial calculator!") break else: print("Invalid Option") break main()
Need assistance with python code.
Problem statement:
Design the solution to the following problem and implement it in a Python program.
Implement a program that allows the user to choose from a menu to calculate the future value of an investment, the present value (how much you need to invest) for a target investment value, or the monthly payment for a loan. The formulas for these quantities are given as follows:
A: amount (present value, target value, or loan amount depending on what is calculated)
r: interest rate (Note: the user will enter 3.5 for 3.5%. When substituting in the formula, the user input needs to be decimal, that is, 0.035 which is 3.5/100
t= time (number of years for the investment or the loan) (See attached image for reference)
Your program will provide a menu to the user with the following options:
F - Future Value
P - Present Value
M- Monthly Payment
Q - Quit
- If the user chooses F, P, or M (or lowercase versions of these letters), then the program will perform the necessary action(s) (see below) and then display the menu again to get the user's choice.
- If the user chooses Q or q then the program will display a "Good Bye" message and end.
- If the user chooses any other key, the program will print "Invalid input" on the screen and display the menu again to get user's choice.
In this program you are required to implement 4 functions:
- displayMenu()
This function will be called to display the menu. It will print a menu as shown above. (Note that it has no parameters and no return)
- calculateFutureValue(amount,interest_rate,duration)
This function will be called if the user chooses option F. It will calculate the future value for the given parameters and return the future value. (This function does NOT print anything. It does NOT ask the user for input)
- calculatePresentValue(amount,interest_rate,duration)
This function will be called if the user chooses option P. It will calculate the present value for the given parameters and return the present value. (This function does NOT print anything. It does NOT ask the user for input)
- calculateMonthlyPayment(loan_amount, interest_rate, duration)
This function will be called if the user chooses option M. It will calculate the monthly payment of a loan for the given parameters and return the monthly payment. (This function does NOT print anything. It does NOT ask the user for input)
Here is the code that I have:
def displayMenu():
print("Welcome to your financial calculator!")
print("F - Future Value")
print("P - Present Value")
print("M - Monthly Payment")
print("Q - Quit")
return str(input("Please select on of the options above: "))
def calculateFutureValue(amount, interest_rate, duration):
FutureValue = amount * ( 1 + interest_rate) ** duration
#print("Future value of your investment is", round(FutureValue, 2))
return round(FutureValue, 2)
def calculatePresentValue(amount, interest_rate, duration):
PresentValue = amount * ( 1 + interest_rate) ** -duration
#print("Present value of your target amount is", round(PresentValue, 2))
return round(PresentValue, 2)
def calculateMonthlyPayment(loan_amount, interest_rate, duration):
MonthlyPayment = (Amount * (interest_rate/12) * (1 + (interest_rate/12)) ** duration *12) / ((1 + (interest_rate/12))**duration * 12 - 1)
#print("Monthly payment for your loan is", round(MonthlyPaymnet, 2))
return round(MonthlyPayment, 2)
def main():
while True:
choice = displayMenu()
if choice == ["F"] or ["f"]:
amount = float(input(print("Please enter the investment amount:")))
interest_rate = float(input(print("Please enter the interest rate:")))
duration = float(input(print("For how many years will you invest?:")))
calculateFutureValue(amount, interest_rate, duration)
print("Future value of your investment is", FutureValue)
elif choice == ["P"] or ["p"]:
amount = float(input(print("Please enter the target amount:")))
interest_rate = float(input(print("Please enter the interest rate:")))
duration = float(input(print("In how many year you want to hit the target?")))
calculatePresentValue(amount, interest_rate, duration)
print("Present value of your target amount is", PresentValue)
elif choice == ["M"] or ["m"]:
loan_amout = float(input(print("Please enter the loan amount:")))
interest_rate = float(input(print("Please enter the interest rate:")))
duration = float(input(print("In how many years wil you pay?")))
calculateMonthlyPayment(loan_amount, interest_rate, duration)
print("Monthly payment for your loan is", MonthlyPaymnet)
elif choice == ["Q"] or ["q"]:
print("Thank you for using my financial calculator!")
break
else:
print("Invalid Option")
break
main()
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