Enumerations – Practical Use
Name:
Date:
Class:
A
Quick Questions
Shade in the A or B circle for each question.
1. (1,2) + (3,4) returns?
2. (1,2) * 3 returns?
3. t = (1,2,2,3)\nt.count(2) returns?
4. t = (10,20,30)\nt.index(20) returns?
5. How many methods do tuples have?
B
Match the Pairs
Draw a line connecting each item on the left to its match on the right.
| Left column | Right column | |
|---|---|---|
| 1t.append(4) | AOutput: (1, 2, 1, 2) | |
| 2t.remove(1) | BError: Tuples are immutable — no remove method | |
| 3(1, 2) + (3, 4) | CError: Tuples have no append method | |
| 4t.count(2) | DOutput: [1, 2, 3] | |
| 5(1, 2) * 2 | EOk: Count how many times 2 appears in t | |
| 6sorted((3, 1, 2)) | FValid: Concatenate two tuples into one |
C
Definitions
Concatenation (+)
D
Fill in the Blanks
Complete each line of code by filling in the missing parts.
1.
t = (1, 2) _ (3, 4)
2.
t = (1, 2) _ 3
3.
t = (1, 2, 2, 3)
print(t._____(2))
4.
t = (10, 20, 30)
print(t._____(20))
5.
t = (3, 1, 2)
print(______(t))
E
Spot the Error
Shade in the letter of the line that contains an error.
Question 1
A
t = (3, 1, 2)
B
t.sort()
C
print('Sorted:', t)
D
print('Done')
Question 2
A
t = (1, 2, 3)
B
t += 4
C
print('Tuple:', t)
D
print('Done')
Question 3
A
t = (1, 2, 3)
B
idx = t.index(5)
C
print('Index:', idx)
D
print('Done')
Question 4
A
t = (3, 1, 2)
B
result = sorted(t)
C
print('Sorted:', result)
D
# expects tuple
Question 5
A
t = (1, 2) + [3, 4]
B
label = 'Combined'
C
print('Combined:', t)
D
print('Done')
Answer Key
Enumerations – Practical Use
Section A: Quick Questions
Q1
B — (1, 2, 3, 4)
Q2
A — (1, 2, 1, 2, 1, 2)
Q3
A — 2
Q4
A — 1
Q5
B — Just 2: count() and index()
Section B: Match the Pairs
Q1
t.append(4) → Error: Tuples have no append method
Q2
t.remove(1) → Error: Tuples are immutable — no remove method
Q3
(1, 2) + (3, 4) → Valid: Concatenate two tuples into one
Q4
t.count(2) → Ok: Count how many times 2 appears in t
Q5
(1, 2) * 2 → Output: (1, 2, 1, 2)
Q6
sorted((3, 1, 2)) → Output: [1, 2, 3]
Section C: Definitions
Q1
Concatenation (+) — Combines two tuples into a new tuple.~~Repetition (*)Section D: Fill in the Blanks
Q1
t = (1, 2) + (3, 4)Q2
t = (1, 2) * 3Q3
t = (1, 2, 2, 3)
print(t.count(2))Q4
t = (10, 20, 30)
print(t.index(20))Q5
t = (3, 1, 2)
print(sorted(t))Section E: Spot the Error
Q1
B — Tuples don't have sort(). Use sorted() and convert back.
Q2
B — Must concatenate with a tuple: (4,) not just 4
Q3
B — index() raises ValueError if value isn't in the tuple
Q4
B — sorted() returns a list. Wrap in tuple() to get a tuple back.
Q5
A — Can't concatenate tuple + list. Both must be the same type.