Question

-----------Python program-------------------

Instructions: For this assignment, you will write complete a program that allows a customer to plan for retirement.

Part 2: Generate a Retirement Planning Table:

It's hard to decide how much you need to save for retirement. To help your customer visualize how long her nest egg will last, write a program that allows the user to generate a retirement planning table showing the number of months the savings will last for various combinations of starting account balance and interest rate.

Here is one important goal of this assignment: You must use ("call") the 'calc_months' function you wrote for Assignment #4 in this assignment. This means that you need to put a copy of that function definition at the beginning of your code for this assignment. If your function gave correct results in Assignment #4, do not change it for this assignment. Instead, just write code that calls the calc_months function and show the value returned in the table.

Specification:

• Get just one input value from the user: the amount to be spent each month. Make sure that the user has entered a number greater than or equal to $500.
• Produce a table that shows the number of months savings will last in 40 different situations:
  • 10 different starting balances should be used: 450000, 500000, ... , 900000.
  • For each starting balance, vary the interest rate from 3% to 9% in steps of 2%.
  • Your program must use nested loops to produce the table.
• Here is what the table would look like if the user specifies monthly spending of $5,000 (program output in blue, user input in black -- just the number 5000):

Welcome to the retirement planning tool! Enter monthly spending (at least $500): $5000 Retirement Savings Table: Starting Balance Assumed Interest Rate 335 % 7% 93 -- -- 102 115 113 129 150 175 $450000 $500000 $550000 $ 600000 $650000 $700000 $750000 $800000 $850000 $ 900000 O O ONO OOO 172 NN CON CD 000 WNNNN أيا 600 600 600 600 600 ك NN W NO يا في 600 600 o 31

Development Tips:

1. To get full credit, you must use nested loops to create the table.
   • The header of the table is created as part of the initialization for the outer loop.
   • Each row that follows is created by one pass through the outer loop.
   • In each row, the first cell is created as part of the initialization for the inner loop. The remaining cells are created by the body of the inner loop.
2. To get full credit, the program must call the function written in Assignment #4.
3. This Multiplication Table Sample Program is a valuable reference for this assignment.
4. Don't forget to include comments showing documented test cases at the end of your program.

Assignment#4

def calc_months(initial_bal, interest, monthly_cost):
months = 0

while initial_bal > 0 and months < 600:
months += 1
initial_bal -= monthly_cost
initial_bal += initial_bal * (interest / 1200)
  
return months

def main():
print(calc_months(300000, 6, 3000))
print(calc_months(10000, 0, 2000))
print(calc_months(1000000, 4.5, 4200))
print(format(calc_months(1000000, 4.6, 4200), '.2f'))

main()

Answer 1

"""Already given function for calculation of the number of months savings will last.
Takes initial balance in account, interest and the monthly cost as input for calculation"""
def calc_months(initial_bal, interest, monthly_cost):
months = 0
while initial_bal > 0 and months < 600:
months += 1
initial_bal -= monthly_cost
initial_bal += initial_bal * (interest / 1200)
return months
#main function
def main():
#list of all the given starting balance of account which will be used in the table
start_bal=[450000,500000,550000,600000,650000,700000,750000
,800000,850000,900000]
#list of all the interest which will be used one by one for each starting balance
interest=[3,5,7,9]
#Starting message
print("Welcome to the retirement planning tool!")
#taking monthly spending as input
spend=int(input("Enter monthly spending(at least $500): $"))
"""if spending is less then $500 then it will keep running the loop until
a number greater than 500$ is entereed by user as mentioned in the question"""
while(spend< 500):
spend=int(input("Please enter at least $500): $"))
#printing the initial header and adjusting all the content as described in the example of table given
#Here I am not using any module for printing table instead I am providing -,space and tabs by myself
#Initialization for outer loop
print("Starting | Assumed Interest Rate \nBalance | 3% 5% 7% 9%")
print("-----------+-----------------------")
#Outer loop which will iterate over list of starting balances one by one
for bal in start_bal:
#Initialization for Inner loop which will print first cell of each row containing starting balance
print("${} |".format(bal),end='')
#Inner loop which will iterate over all interest one by one for each strting balance
for i in interest:
#printing space to adjust content in table
print(" ",end='')
#calling the given calc_months function by passing spend, bal, i to it
#Function will return the number of months saving will last
print(calc_months(bal,i,spend),end='')
#printing space to adjust content in table
print(" ",end='')
#Printing new line so that next calculation for different starting balance will start from next row
print()
  
#Calling main function
main()
  

te calc.py - C:/Users/Megha/AppData/Local/Programs/Python/Python37-32/calc.py (3.7.4) File Edit Format Run Options Window Help "Already given function for calculation of the number of months savings will last. Takes initial balance in account, interest and the monthly cost as input for calculation" def calc_months (initial_bal, interest, monthly_cost): months = 0 while initial bal > 0 and months < 600: months += 1 initial_bal -= monthly_cost initial_bal += initial_bal * (interest / 1200) return months #main function def main(): #list of all the given starting balance of account which will be used in the table start_bal=[ 450000, 500000, 550000, 600000, 650000, 700000, 750000 800000, 850000, 900000] #list of all the interest which will be used one by one for each starting balance interest=[3,5,7,9] #Starting message print ("Welcome to the retirement planning tool!") #taking monthly spending as input spend=int (input ("Enter monthly spending (at least $500): $")) if spending is less then $500 then it will keep running the loop until a number greater than 500$ is entereed by user as mentioned in the question" while (spend< 500): spend=int (input ("Please enter at least $500): $")) #printing the initial header and adjusting all the content as described in the example of table given #Here I am not using any module for printing table instead I am providing -, space and tabs by myself #Initialization for outer loop print ("Starting Assumed Interest Rate \nBalance 3% 5% 73 94") print("---------- - ------- -----" #Outer loop which will iterate over list of starting balances one by one for bal in start bal: #Initialization for Inner loop which will print first cell of each row containing starting balance print("${} |". format (bal), end='') #Inner loop which will iterate over all interest one by one for each strting balance for i in interest: #printing space to adjust content in table print(" ", end='') #calling the given calc months function by passing spend, bal, i to it #Function will return the number of months saving will last print (calc_months (bal, i, spend), end='') #printing space to adjust content in table it and I

for i in interest: #printing space to adjust content in table print(" ", end='') #calling the given calc months function by passing spend, bal, i to it #Function will return the number of months saving will last print (calc_months (bal, i, spend), end='') #printing space to adjust content in table print(" ", end='') #Printing new line 30 that next calculation for different starting balance will start from next row print () #Calling main function main()

The LUIL Tel Deuuy UPLIUIS VILTUUW TICIP Python 3.7.4 (tags/v3.7.4:e09359112e, Jul 8 2019, 19:29:22) [MSC v.1916 32 bit (Intel)] on win32 Type "help", "copyright", "credits" or "license ()" for more information. = RESTART: C:/Users/Megha/AppData/Local/Programs/Python/Python37-32/calc.py - Welcome to the retirement planning tool! Enter monthly spending (at least $500): $5000 Starting Assumed Interest Rate Balance 3% 5% 7% 9% 113 149 147 166 $450000 $500000 $550000 $600000 $650000 $700000 $750000 $800000 $850000 $900000 102 115 | 129 | 143 157 | 172 1188 204 | 221 239 127 150 175 205 242 288 351 453 600 210 183 229 300 460 600 600 600 600 600 235 263 331