Lists – Creation
Name:
Date:
Class:
A
Quick Questions
Shade in the A or B circle for each question.
1. How do you create a list?
2. What does [] create?
3. Can a list hold different types?
4. What does len([1, 2, 3]) return?
5. Are list items ordered?
B
Match the Pairs
Draw a line connecting each item on the left to its match on the right.
| Left column | Right column | |
|---|---|---|
| 1nums = (1, 2, 3) nums.append(4) | AError: Missing closing bracket ] | |
| 2items = [1, 2, 3 print(items) | BOutput: 3 | |
| 3colors = ['red', 'blue', 'green'] | CError: Tuples have no append() | |
| 4mixed = [1, 'hi', True, 3.5] | DValid: List of strings | |
| 5nums = [1, 2, 3] print(len(nums)) | EOutput: [] | |
| 6items = [] print(items) | FOk: Mixed types in a list |
C
Definitions
List
D
Fill in the Blanks
Complete each line of code by filling in the missing parts.
1.
colors = _'red', 'blue', 'green'_
2.
numbers = [10, 20, 30]
print(___(numbers))
3.
empty = __
4.
pets = ['cat'_ 'dog'_ 'fish']
5.
names = ['Alice', 'Bob']
_____(names)
E
Spot the Error
Shade in the letter of the line that contains an error.
Question 1
A
# Create a list of colors
B
colors = ('red', 'blue', 'green')
C
print('First:', colors[0])
D
print('Count:', len(colors))
Question 2
A
# Create a list of colors
B
colors = {'red', 'blue', 'green'}
C
print('First:', colors[0])
D
print('Count:', len(colors))
Question 3
A
# Create a list of colors
B
colors = ['red' 'blue' 'green']
C
print('First:', colors[0])
D
print('Count:', len(colors))
Question 4
A
# Create a list of numbers
B
numbers = [1, 2, 3,]
C
print('First:', numbers[0])
D
print('Count:', len(numbers))
Question 5
A
colors = [red, blue, green]
B
print('First:', colors[0])
C
print('Count:', len(colors))
D
print('Done')
Answer Key
Lists – Creation
Section A: Quick Questions
Q1
A — Square brackets []
Q2
B — An empty list
Q3
A — Yes strings, numbers, booleans, etc.
Q4
B — 3
Q5
A — Yes they keep their order
Section B: Match the Pairs
Q1
nums = (1, 2, 3)
nums.append(4) → Error: Tuples have no append()
Q2
items = [1, 2, 3
print(items) → Error: Missing closing bracket ]
Q3
colors = ['red', 'blue', 'green'] → Valid: List of strings
Q4
mixed = [1, 'hi', True, 3.5] → Ok: Mixed types in a list
Q5
nums = [1, 2, 3]
print(len(nums)) → Output: 3
Q6
items = []
print(items) → Output: []
Section C: Definitions
Q1
List — An ordered collection of items in square brackets.~~[]Section D: Fill in the Blanks
Q1
colors = ['red', 'blue', 'green']Q2
numbers = [10, 20, 30]
print(len(numbers))Q3
empty = []Q4
pets = ['cat', 'dog', 'fish']Q5
names = ['Alice', 'Bob']
print(names)Section E: Spot the Error
Q1
B — Use square brackets [] for lists, not parentheses (tuples)
Q2
B — Use square brackets [] for lists, not curly braces (sets)
Q3
B — Items must be separated by commas
Q4
B — Trailing comma is valid Python but unnecessary and sloppy
Q5
A — String items need quotes: without quotes Python looks for variables