Future_v2

def future_value(P, i, t):
  F = P * (1+i)**t
  return F

def main():
  P = float(input("Please enter the amount of money that you plan to invest:"))
  while(True):
    i = float(input("\nPlease enter the monthly interest rate (a value between 0 and 1):"))
    if(i > 0 and i < 1):
        break
    else:
        print("Value of i should be between 0 and 1, please try again!")

  t = int(input("\nPlease enter the total number of months that you plan to keep your money invested:"))
  F = future_value(P,i,t)

  print("\nThe future value of your money is:"+str(F))

if __name__ == '__main__':
    main()