Naming conventions for solution elements

Name:

Date:

Class:

Quick Questions

Shade in the A or B circle for each question.

1. Which variable name follows good naming practice for storing a student's test score?

A test_score

B x

2. Which is the better name for a constant holding the GST rate in Python?

A gstrate

B GST_RATE

3. A program follows snake_case for variables. Which new variable name is consistent with that convention?

A total_price

B TotalPrice

4. Which class name follows the common Python convention?

A StudentRecord

B student_record

5. True or false: A naming convention only matters to the computer, not to the people reading the code.

A True

B False

Match the Pairs

Draw a line connecting each item on the left to its match on the right.

Left column		Right column
1MAX_STUDENTS = 30		AA constant named in UPPER_SNAKE_CASE so it stands out as a value that should not change
2class StudentRecord:		Bfirst_name = "Ava" last_name = "Nguyen" year_level = 7
3A meaningful name describes what the data stores, so the code is easy to read		CThe variable names mix snake_case, PascalCase and camelCase, so the program is inconsistent
4Consistency means using the same naming pattern for every variable throughout a program		Dtotal_price = quantity * unit_price
5x = 15 y = 4 z = x * y		EA class name written in PascalCase, with each word starting with a capital letter
6first_name = "Liam" LastName = "Smith" yearLevel = 8		FThe names x, y and z are not meaningful, so a reader cannot tell what the values represent

Definitions

naming convention

Fill in the Blanks

Complete each line of code by filling in the missing parts.

___________ = 78 + 85 average_mark = total_marks / 2

class _____________: pass rec = StudentRecord()

________ = 0.1 price = 50 total = price + price * GST_RATE

def _______________(price, qty): return price * qty cost = calculate_total(4, 3)

________ = 0 max_mark = 100 print(min_mark, max_mark)

Spot the Error

Shade in the letter of the line that contains an error.

Question 1

A MAX_ATTEMPTS = 3

B attempts = 0

C while attempts < max_attempts:

D attempts += 1

Question 2

A # Class for a library book

B class book_item:

C def __init__(self, title):

D self.title = title

Question 3

A let studentName = 'Ava';

B let studentAge = 15;

C let student_score = 88;

D console.log(studentName);

Question 4

A price = 12.50

B x = 3

C total_cost = price * quantity

D print(total_cost)

Question 5

A score = 78

B MAX_SCORE = 100

C PASS_MARK = 50

D top_mark = 90

E passed = score >= PASS_MARK

Answer Key

Naming conventions for solution elements

Section A: Quick Questions

A — test_score

B — GST_RATE

A — total_price

A — StudentRecord

B — False

Section B: Match the Pairs

MAX_STUDENTS = 30 → A constant named in UPPER_SNAKE_CASE so it stands out as a value that should not change

class StudentRecord: → A class name written in PascalCase, with each word starting with a capital letter

A meaningful name describes what the data stores, so the code is easy to read → total_price = quantity * unit_price

Consistency means using the same naming pattern for every variable throughout a program → first_name = "Ava" last_name = "Nguyen" year_level = 7

x = 15 y = 4 z = x * y → The names x, y and z are not meaningful, so a reader cannot tell what the values represent

first_name = "Liam" LastName = "Smith" yearLevel = 8 → The variable names mix snake_case, PascalCase and camelCase, so the program is inconsistent

Section C: Definitions

naming convention — An agreed pattern for naming variables, functions, classes and constants so code is consistent, uses meaningful names and is easy to read.

Section D: Fill in the Blanks

total_marks = 78 + 85
average_mark = total_marks / 2

class StudentRecord:
    pass
rec = StudentRecord()

GST_RATE = 0.1
price = 50
total = price + price * GST_RATE

def calculate_total(price, qty):
    return price * qty
cost = calculate_total(4, 3)

min_mark = 0
max_mark = 100
print(min_mark, max_mark)

Section E: Spot the Error

C — The constant was named MAX_ATTEMPTS in upper case. Using max_attempts breaks the convention and the program's consistency, and it would also cause an error because that name does not exist. It should be MAX_ATTEMPTS.

B — Class names should use PascalCase (each word starts with a capital, no underscores) so they stand out from variables. The line should be class Book: to match the rest of the program.

C — The rest of the program uses camelCase for variables. Switching to snake_case on one line is inconsistent. It should be let studentScore = 88;.

B — The name x does not say what the value means. Meaningful names make code easier to read and maintain. It should be quantity = 3.

D — Constants are written in UPPER_CASE with underscores, like MAX_SCORE and PASS_MARK. The lower-case name top_mark looks like an ordinary variable and breaks consistency. It should be TOP_MARK = 90.