Question

In PYTHON code:

Mobile Service Provider A mobile phone service provider has three different data plans for its customers: Details Package Name For $39.99 per month, 4 gigabytes provided. Additional data costs $10 per gigabyte. Package A: are For $59.99 per month, 8 gigabytes are provided. Additional data costs $5 per gigabyte. Package B: For $69.99 per month, unlimited data is provided Package C: Write a program that calculates a customer's monthly bill. It should ask which package the customer has purchased and how many gigabytes were used. It should then display the total amount due. The program should also compare the cost with other higher data packages and inform the user if they could save any money by purchasing the other packages. Make sure, you only allow the packages 'A, B' and 'C; any other packages will give an error message and stop executing Format to Two Decimal Places For this assignment, you will need to format the cost to decimal places. Use the format function in Python as listed below: print('{.2f'.format(5)): will convert 5 to 5.00 and display 5.00 in the output print('{:.2fj'.format(cost)): will convert the contents of the cost variable to two decimal places and display to output.

Examples of output are as follows:

If the user entered Package A and 30 GB of data, then you should get the following output:

Mobile Service Provider

Enter your mobile phone package (A, B or C): A
How many gigabytes data did you use? 30
Your total cost for Package A is 299.99
If you had chosen Package C you would have saved $ 230.00
If you had chosen Package B you would have saved $ 130.00

Three more examples are given to show other cases:

Mobile Service Provider

Enter your mobile phone package (A, B or C): B
How many gigabytes data did you use? 3
Your total cost for Package B is 59.99
If you had chosen Package A you would have saved $ 20.00

And,

Mobile Service Provider

Enter your mobile phone package (A, B or C): B
How many gigabytes data did you use? 30
Your total cost for Package B is 169.99
If you had chosen Package C you would have saved $ 100.00

And,

Mobile Service Provider

Enter your mobile phone package (A, B or C): B
How many gigabytes data did you use? 6
Your total cost for Package B is 59.99
You made an optimal choice in Package B!!!

When the user enters Package C, there is no need to ask for the data usage. Package C has unlimited data included.

If the user enters an invalid package name, you should get the the following output:

Mobile Service Provider

Enter your mobile phone package (A, B or C): j
You entered an invalid package name. Good bye!

Answer 1

import sys
print("Mobile Service Provider")
userinput = input("Enter your mobile phone package (A, B or C):")
if userinput not in ["A","B","C"]:
sys.exit("You entered an invalid package name. Good bye!")

gigabyte=int(input("How many gigabytes data did you use?"))
totalcostA=0.0
totalcostB=0.0
totalcostC=0.0
totalcostA=39.99
if gigabyte >4:
totalcostA=39.99+(10*(gigabyte-4))

totalcostB=59.99
if gigabyte >8:
totalcostB=59.99+(5*(gigabyte-8))

totalcostC=69.99
if userinput == "A":
totalcostA=39.99
if gigabyte >4:
totalcostA=39.99+(10*(gigabyte-4))
if userinput == "B":
totalcostB=59.99
if gigabyte >8:
totalcostB=59.99+(5*(gigabyte-8))

if userinput == "C":
totalcostC=69.99

if userinput == "B":
if totalcostC < totalcostA:
if totalcostB <= totalcostC:
print("You made an optimal choice in Package B!!!")
else:
print('If you had chosen Package C you would have saved ${:.2f}'.format(totalcostB-totalcostC))
else:
if totalcostB <= totalcostA:
print("You made an optimal choice in Package B!!!")
else:
print('If you had chosen Package A you would have saved ${:.2f}'.format(totalcostB-totalcostA))

if userinput == "C":
if totalcostA < totalcostB:
if totalcostC <= totalcostA:
print("You made an optimal choice in Package C!!!")
else:
print('If you had chosen Package A you would have saved ${:.2f}'.format(totalcostC-totalcostA))
else:
if totalcostC < totalcostB:
print("You made an optimal choice in Package C!!!")
else:
print('If you had chosen Package B you would have saved ${:.2f}'.format(totalcostC-totalcostB))

if userinput == "A":
if totalcostC < totalcostB:
if totalcostA <= totalcostC:
print("You made an optimal choice in Package A!!!")
else:
print('If you had chosen Package C you would have saved ${:.2f}'.format(totalcostA-totalcostC))
else:
if totalcostA <= totalcostB:
print("You made an optimal choice in Package A!!!")
else:
print('If you had chosen Package B you would have saved ${:.2f}'.format(totalcostA-totalcostB))

=======================================================================

output:

akshay@akshay-Inspiron-3537:~/CODE$ python3 co.py
Mobile Service Provider
Enter your mobile phone package (A, B or C):B
How many gigabytes data did you use?6
You made an optimal choice in Package B!!!

akshay@akshay-Inspiron-3537:~/CODE$ python3 co.py
Mobile Service Provider
Enter your mobile phone package (A, B or C):j
You entered an invalid package name. Good bye!

akshay@akshay-Inspiron-3537:~/CODE$ python3 co.py
Mobile Service Provider
Enter your mobile phone package (A, B or C):B
How many gigabytes data did you use?30
If you had chosen Package C you would have saved $100.00
==============================================================================

Output of all cases is attached.Please feel free to ask questions.