Lab 05: Branching Diagrams

General Information

Submitting to the Auto-Grader

For auto-grading homework assignments in the course, we use Gradescope.

General Submission Info

When submitting files to Gradescope, you need to submit all the files you want graded at once.

You can do this in several ways:

• Select all files you want to submit and drag and drop them in the submission area when prompted.
• Browse your files when prompted by Gradescope and select all files you want to submit.
• Directly compress all the files you want to submit into a zip file (zip file name does not matter), and submit that zip file via drag-and-drop or browsing for it.
• Compress a folder containing the files you want to submit into a zip file (zip file name does not matter), and submit that zip file via drag-and-drop or browsing for it.

Gradescope will look for files with specific names, and those names are case-sensitive. So if in the instructions we ask for a file named hello.py, then Gradescope will not recognize Hello.py, hello.txt, or hello.py.txt.

Group Submissions

When a group of people is submitting an assignment, only one person should submit the solution.

They should then add the other members to that submission. On the Gradescope page for a submission there should be a "+ Add Group Member" button by the name in the upper-right.

This is important because if multiple people submit, our similarity checker will see identical submissions and flag that.

Unlimited attempts

You have unlimited attempts for our auto-graded assignments.

This means that you should submit early and often in order to be confident that code you are writing as you go passes all of our tests.

Academic Honesty

All work that is completed in this assignment is your own group's. You may talk to other students about the problems you are to solve, however, you may not share code in any way, except with your partner(s). What you submit must be your own group's work.

You may not use any code that is posted on the internet. If you are not sure it is in your best interest to contact the course staff. We will be using software that will compare your code to other students in the course as well as online resources. It is very easy for us to detect similar submissions and will result in a failure for the exercise or possibly a failure for the course. Please, do not do this. It is important to be academically honest and submit your work only. Please review the UMass Academic Honesty Policy and Procedures so you are aware of what this means.

Copying partial or whole solutions, obtained from other students or elsewhere, is academic dishonesty. Do not share your code with your classmates, and do not use your classmates' code. If you are confused about what constitutes academic dishonesty you should re-read the course policies. We assume you have read the course policies in detail and by submitting this project you have provided your virtual signature in agreement with these policies.

About

This lab has you writing conditional statements and practicing transforming control flow diagrams into code.

This lab has you use if, if/else, if/elif/else to create logic flows and allow your codes to make choices.

Learning Objectives

1. Practice writing if, if/else, if/elif/else
2. Practice understanding and transforming control flow diagrams into codes

Estimated Size

3 functions:

• Two lines of code
• Four lines of code
• Ten lines of code

Preamble

if/elif/else

This lab centers around control flow diagrams and conditional statements such as if, if/else, if/elif/else.

For instance:

If

weather = input("What is the weather today: ")

equipment = ["coat", "hat"]

if weather == "rain": # if it is raining
    equipment.append("umbrella") # I will grab an umbrella

print(equipment)

If the weather variable has the value "rain" in the above example, then the program will add the string "umbrella" into the Python list named equipment.

Building on this, we can make more advanced decisions using if/else.

For instance:

If_Else

weather = input("What is the weather today: ")

equipment = ["coat", "hat"]

if weather == "rain": # if it is raining
    equipment.append("umbrella") # I will grab an umbrella
else:
    print("Spring break is coming!")

print(equipment)

This time we see that if the weather variable has a value other than "rain", we will do something different - in this case, print something out.

Similarly, we can also check for multiple conditions in a row (as opposed to just one condition) using if/elif/else. Let's see an example:

If_Elif_Else

input_month = input()
input_day = int(input())

if (input_month == "March"):
    if (input_day > 0 and input_day <= 19):
        print('Winter')
    elif (input_day > 19 and input_day <= 31):
        print('Spring is here!')
    else:
        print('Invalid')

Based on the variable input_month:

• If it is March:
  • We will check if input_day is between 0 and 19. If it is, we know we are still in the Winter.
  • Otherwise, we could next check if input_day is now between 19 and 31. If it is, we know we are no longer in the Winter, but in Spring.
  • Lastly, if input_day is not between 0 and 31, we know something is wrong.

What is Golf?

Golf is a sport where your goal is to hit a ball into a hole.

The expected number of hits necessary for a given hole is called the "par".

There are special names associated with the number of hits it take you to complete a hole relative to the par:

• 2 below par: "Eagle"
• 1 below par: "Birdie"
• At par: "Par"
• 1 above par: "Bogie"

Assignment

0. Set up file named golf.py

You know the drill at this point, this lab is in a file named golf.py Use the starter codes and fill in the TODO

1. Implement played_sport() (1 point)

played_sport() is a function that takes in a string parameter representing a sport name, and implements the control flow diagram below.

Here is some starter code for this function. Don't forget to copy this code to golf.py when you are done.

Played_Sport

def played_sport(sport):
    # TODO: Implement the control flow diagram

# Testing your code:
sport = input("What sports have you played before: ").lower()
played_sport(sport)

2. Implement legal_par() (1 point)

legal_par() is a function that takes in an integer parameter representing the par for a hole, and implements the control flow diagram below.

For this part, you will be responsible for making and testing the function.

You can refer to the previous example for what testing can look like (although you will need to convert input to an int).

Testing

Prompt for input and save it in a variable. Let's call that variable par. Call the function with par as its argument, print the output. Try it with various values for par.

3. Implement score() (1 point)

score() is a function that takes in two integer parameters:

• The first represents the par for a hole.
• The second represents the number of hits/strokes taken to complete the hole.

score() implements the control flow diagram below.

Testing

Assuming you have the variable par from the previous testing section, then you can prompt for input again and save it in a new variable called strokes. Call the function with par and strokes as its arguments, and print the output. Try it with various values for par and strokes.

Grading Scale

Below are how many points translate to what level on the 5-point scale.

1: Below Standards: 0 points

2: Approaching Standards: 1 point

3: Meeting Standards: 2 points

4: Exceeding Standards: 3 points