CS10 Python Programming Homework 2 40 points
1. You must turn in your program listing and output for each program set. Start a new sheet or sheets of paper for each program set. Each program set must have your student name, student ID, and program set number/description. All the 4 program sets must be printed and submitted together with your Exam 2. Once you complete your Exam 2 and leave the classroom you will not be able to submit Homework 2. Late homework will not be accepted for whatever reasons you may have.
*********for this homework, you are also to submit Program set 4 to Canvas under Homework 2 link*********
- Name your file : lastname_firstname.py
- You still have to submit the paper copy together with the rest of the Homework 2.
- You have till 11:59pm on the day of Exam 2 to submit Program Set 4 to Canvas. If the deadline
is past Program Set 4 will not be graded even if you submit the paper copy on time.
2. You must STAPLE (not stapled assignments will not be graded resulting in a zero score) your programming assignment and collate them accordingly. Example Program set 1 listing and then output, followed by Program Set 2 listing and output and so on.
3. Please format you output properly, for example all dollar amounts should be printed with 2 decimal places. Make sure that your output values are correct (check the calculations).
4. Each student is expected to do their own work. IF IDENTICAL PROGRAMS ARE SUBMITTED, EACH IDENTICAL PROGRAM WILL RECEIVE A SCORE OF ZERO.
Grading:
Each program set must run correctly both syntactically, logically, and display the correct output as specified. If the program set does not run, a zero will be given. For each Program set, if the program executes properly with proper syntax, logic, and displays the correct output, then points will be deducted for not having proper:
- Comments 1 pt
– Your name, description at the beginning of each program set. Short description of the what each section of your codes do. - Consistency/Readability 2 pts
– Spacing(separate each section of codes with a blank line
– Indentation
– Style (proper naming of variables no a,b,c – use descriptive and mnemonics) - Required elements 2 pts
– Use tools that have been covered in class– proper formatting for output when specified
– all monetary values must be in 2 decimal places - Output (Each Program Set without an output will receive a zero) – to be displayed at the end of the program listing(codes) – must use test cases when provided
USE ONLY THE TOOLS YOU HAVE BEEN TAUGHT IN CLASS ONLY, IF YOU USE ANYTHING WE HAVE NOT COVERED YET YOU WILL RECEIVE A ZERO FOR THAT PROGRAM SET .
Program Set 1(10 points)
Lottery program. The program randomly generates a two-digit number, prompts the user to enter a two-digit number, and determines whether the user wins according to the following rules:
- if the user’s input matches the lottery In the exact order, the award is $10,000.
- if all the digits in the user’s input match all the digits in the lottery number, the award is $3,000.
- if one digit in the user’s input matches a digit in the lottery number, the award is $1,000.
Program Set 2 Using Loops (Use while loop only for this program) (5 points)
Stock Transaction Program
Last month Joe purchased some stock from Schmoe, Inc.
Write a program that allows the user to input the followings as many times as he/she wants until the user is done (example it can be 5):
- The name of the stock
- Stock Number of shares Joe bought
- Stock purchase price
- Stock selling price
- Broker commission
displays the following paid for the stock(s) that Joe had transacted ( if Joe entered 5 sets of stocks transactions then output 5 sets of stocks).
:
- The Name of the Stock
- The amount of money Joe paid for the stock (number of shares bought * purchase price)
- The amount of commission Joe paid his broker when he bought the stock. (Amount he paid for stocks *
commission in percent)
- The amount that Jim sold the stock for. (number of shares * selling price)
- The amount of commission Joe paid his broker when he sold the stock. (Amount he sold shares *
commission in percent)
- Display the amount of money Joe had left when he sold the stock and paid his broker (both times). If
this amount is positive, then Joe made a profit. If the amount is negative, then Joe lost money. Profit/loss =(amount for sold stocks– commission) -(amount paid to buy stocks + commission)
Program Set 3 – Use for Loops only (5 Points)
Convert program 2 codes to use For loops to enter stocks data and output the stocks data. You are to ask the user how many stocks does he/she wants to input. For example,
How many stocks do you want to enter now? 3
Your program must only allow user to enter 3 sets of stocks and output 3 sets of stocks.
Program Set 4 (20 Points)
This assignment will give you more experience on the use of: 1. integers (int)
2. floats (float) 3. conditionals 4. iteration
The goal of this project is to make a fictitious comparison of the new federal income tax based on the new tax bill passed by the congress in December 2017 with the old federal income tax. You will ask the user to input their taxable income. Use the income brackets given below to calculate the new and old income tax. For the sake of simplicity of the project we will only consider individuals and not married users. We will also ignore any tax deductions while calculating income tax—they can significantly alter the tax, but add too much complexity for our programming project.
New income tax brackets (2018 and newer) Rate Income range
10% Up to $9,525
12% $9,526 to $38,700 22% $38,701 to $82,500 24% $82,501 to $157,500 32% $157,501 to $200,000 35% $200,001 to $500,000 37% over $500,000
Old income tax brackets (2017 and older) Rate Income range
10% Up to $9,325
15% $9,326 to $37,950 25% $37,951 to $91,900 28% $91,901 to $191,650 33% $191,651 to $416,700 35% $416,701 to $418,400 39.6% over $418,401
Assignment Background
Being in the 25% tax bracket doesn’t mean you pay 25% on everything you make. The progressive tax system means that people with higher taxable incomes are subject to higher tax rates, and people with lower taxable incomes are subject to lower tax rates.
For example, let’s say you’re a filer with $32,000 in taxable income. That puts you in the 15% tax bracket in 2017. But do you pay 15% on all $32,000? No. Actually, you pay only 10% on the first $9,325; you pay 15% on the rest. (Look at the tax brackets above to see the breakout.)
If you had $50,000 of taxable income, you’d pay 10% on that first $9,325 and 15% on the chunk of income between $9,326 and $37,950. And then you’d pay 25% on the rest, because some of your $50,000 of taxable income falls into the 25% tax bracket. The total bill would be $8,238.75 — about 16% of your taxable income, even though you’re in the 25% bracket.
Project Description
Your program must meet the following specifications:
1. At program start, prompt the user for their income
2. Repeatedly prompt the user for new income until a negative income is entered. 3. Calculate the income tax using the 2017 and 2018 tax bracket tables above.
4. For each income entered:
a. Calculate the 2017 income tax and store it in a variable.
b. Next calculate the 2018 income tax and store it in a variable c. Print
i. The income
ii. The 2017 tax
iii. The 2018 tax
iv. The difference between the 2018 and 2017 tax rounded to cents.
v. The difference between the 2018 and 2017 tax as a percentage of the 2017 tax rounded to cents
Assignment Deliverable
The deliverable for this assignment is the following file:
lastname_firstname.py – the source code for your Python program
Be sure to use the specified file name and to submit it for grading via Canvas before the project deadline.
Assignment Notes
- To clarify the project specifications, sample output is appended to the end of this document.
- Use a while loop with a Boolean that keeps looping as long as the income is greater than or
equal to zero. Prompt for income before the loop and remember to convert the input string to an int (so you are comparing an int in your Boolean expression). Remember to prompt again at the end (aka “bottom”) of the loop.
4. There will be no error checking in this assignment. If a float or a string is entered at the prompt, the program will crash.
Test Cases
Test Case 1 _____________________________________________________________
Enter income as an integer with no commas: 8000 Income: 8000 2017 tax: 800.0 2018 tax: 800.0
Difference: 0.0 Difference (percent): 0.0
Enter income as an integer with no commas: 15000 Income: 15000 2017 tax: 1783.75 2018 tax: 1609.5
Difference: -174.25 Difference (percent): 9.77
Enter income as an integer with no commas: 40000
Income: 40000 2017 tax: 5738.75 2018 tax: 4739.5 Difference: -999.25 Difference (percent): 17.41
Enter income as an integer with no commas: 100000 Income: 100000 2017 tax: 20981.75 2018 tax: 18289.5
Difference: -2692.25 Difference (percent): 12.83
Enter income as an integer with no commas: 200000 Income: 200000 2017 tax: 49399.25 2018 tax: 45689.5
Difference: -3709.75 Difference (percent): 7.51
Enter income as an integer with no commas: 500000 Income: 500000 2017 tax: 153818.85 2018 tax: 150689.5
Difference: -3129.35 Difference (percent): 2.03
Enter income as an integer with no commas: 1000000 Income: 1000000 2017 tax: 351818.85 2018 tax: 335689.5
Difference: -16129.35 Difference (percent): 4.58
Enter income as an integer with no commas: 10000000 Income: 10000000 2017 tax: 3915818.85 2018 tax: 3665689.5
Difference: -250129.35 Difference (percent): 6.39
Enter income as an integer with no commas: -1
Test 2 _____________________________________________________________ _
Enter income as an integer with no commas: -1