Enumerations – Basics
Name:
Date:
Class:
A
Quick Questions
Shade in the A or B circle for each question.
1. What is a tuple?
2. How do you create a tuple?
3. Can you change a tuple's items?
4. t = (1, 2, 3)\nt[0] returns?
5. How do you create a single-item tuple?
B
Match the Pairs
Draw a line connecting each item on the left to its match on the right.
| Left column | Right column | |
|---|---|---|
| 1t = (1) | AValid: Tuple with three items | |
| 2t[0] = 5 | BOk: Unpack a tuple into two variables | |
| 3t = (1, 2, 3) | COutput: 4 | |
| 4a, b = (10, 20) | DError: Single item needs trailing comma: (1,) | |
| 5(1, 2, 3)[1] | EError: Tuples are immutable — cannot assign | |
| 6len((4, 5, 6, 7)) | FOutput: 2 |
C
Definitions
Tuple
D
Fill in the Blanks
Complete each line of code by filling in the missing parts.
1.
point = (3, 4)
print(point[_])
2.
single = (42_) # single-item tuple
3.
a, b = (10, 20)
print(_)
4.
t = (1, 2, 3)
print(___(t))
5.
print(2 __ (1, 2, 3))
E
Spot the Error
Shade in the letter of the line that contains an error.
Question 1
A
t = (1, 2, 3)
B
t[0] = 99
C
print('Updated:', t)
D
print('Done')
Question 2
A
t = (1, 2, 3)
B
t.append(4)
C
print('Tuple:', t)
D
print('Done')
Question 3
A
single = (42)
B
print('Type:', type(single))
C
print('Value:', single)
D
# expects tuple
Question 4
A
coords = (1, 2, 3)
B
a, b = coords
C
print('a:', a, 'b:', b)
D
print('Done')
Question 5
A
t = (1, 2, 3)
B
first = t(0)
C
print('First:', first)
D
print('Done')
Answer Key
Enumerations – Basics
Section A: Quick Questions
Q1
A — An immutable ordered sequence
Q2
A — Parentheses () or commas
Q3
B — No tuples are immutable
Q4
A — 1
Q5
B — (1,) with a trailing comma
Section B: Match the Pairs
Q1
t = (1) → Error: Single item needs trailing comma: (1,)
Q2
t[0] = 5 → Error: Tuples are immutable — cannot assign
Q3
t = (1, 2, 3) → Valid: Tuple with three items
Q4
a, b = (10, 20) → Ok: Unpack a tuple into two variables
Q5
(1, 2, 3)[1] → Output: 2
Q6
len((4, 5, 6, 7)) → Output: 4
Section C: Definitions
Q1
Tuple — An immutable ordered sequence created with parentheses.~~ImmutableSection D: Fill in the Blanks
Q1
point = (3, 4)
print(point[0])Q2
single = (42,) # single-item tupleQ3
a, b = (10, 20)
print(b)Q4
t = (1, 2, 3)
print(len(t))Q5
print(2 in (1, 2, 3))Section E: Spot the Error
Q1
B — Tuples are immutable: can't change items. Create a new tuple instead.
Q2
B — Tuples don't have append(): they're immutable
Q3
A — (42) is just the number 42. Need trailing comma: (42,) for a tuple.
Q4
B — 3 values but only 2 variables: need matching count for unpacking
Q5
B — Use square brackets for indexing: t[0] not t(0)