ACARA Digital Technologies Years 7–8 Definitions Worksheet: Tracing and Debugging Algorithms and Programming with Control Structures and Functions (Python) (Modules 482–519)
Name:
Date:
Class:
✎
Key terms
Write what each term means, in your own words.
1
bug report
2
print("Hi")
3
print("Hello!")
4
score = score + 1
5
name = input("What is your name? ")
6
NameError
7
if score == 10:
8
IndentationError
9
for i in range(10):
10
while True:
Answer Key
ACARA Digital Technologies Years 7–8 · Modules 482–519 · Student wording will vary for definitions
1bug report — A short note giving the input used, the expected and actual output, the trace row where it goes wrong, the cause and the correction. Use 'because' to explain the cause to a classmate.
2print("Hi") — One typed line of Python matches one Scratch block. A stack of blocks becomes lines of code that run in order from the top, so spelling and punctuation must be exact.
3print("Hello!") — Python version of the Scratch say block. It shows the text inside the quotes on screen, so say Hello! becomes print("Hello!"). Python has no direct match for say for 2 seconds.
4score = score + 1 — Python for the Scratch block 'change score by 1'. Python works out the right side first, then stores the answer back in score. Use score = 0 to set it.
5name = input("What is your name? ") — Like Scratch ask and wait: input() shows the prompt, waits for a reply, and the answer is stored in a variable (name), just like the answer reporter.
6NameError — An error Python raises when code uses a variable or function name it does not know, often from a typo, wrong capitals, missing quotes or using a name before it is assigned.
7if score == 10: — Python's version of Scratch's if block: the hexagon condition becomes a comparison like ==, then a colon, and the blocks inside become indented lines. Add else: for the else part.
8IndentationError — Python errors when a block's lines are not indented consistently, or when the if, for, while or def line that opens the block is missing its colon.
9for i in range(10): — Python's version of the Scratch repeat 10 block. The lines indented under it run 10 times, and i counts from 0 to 9.
10while True: — The Python version of the Scratch forever block. It repeats its indented code nonstop until break. Scratch repeat until x becomes while not x: