01
Choose one
1 point
What is the value of values[1:4] when values = [0, 1, 2, 3, 4, 5]?
Free Practice Quiz Question List
5 Collections and String Processing Online Quiz Questions
Use this free practice quiz with 20 questions to review 5 Collections and String Processing, test your knowledge, and prepare for your next test or exam.
20 questions
02
True or false
1 point
True or false: After text = "hello"; result = text.upper(), the original variable text still refers to the lowercase string "hello".
- A
True
- B
False
03
Written response
1 point
Which Python string method would you use to change every occurrence of "cat" to "dog" in a string?
04
Fill in the blank
1 point
What value is assigned to email by this code when student = {"name": "Ada"}?
email = student.get("email")
Answer:
05
Choose one
1 point
A program receives usernames that may contain duplicates and needs to test quickly whether a username has already appeared. Which collection is the most appropriate?
- A
A list
- B
A tuple
- C
A set
- D
A dictionary
06
Choose all
1 point
Which two of the following listed collection types are ordered sequences that support indexing? Select all correct choices.
- A
A list
- B
A set
- C
A tuple
- D
A dictionary
07
True or false
1 point
True or false: Because modern Python dictionaries preserve insertion order, a dictionary can generally replace a list when numeric positions and slicing are central to a problem.
- A
True
- B
False
08
Written response
1 point
What Python collection is generally more suitable than a list for a queue that frequently adds and removes items at both ends?
09
Fill in the blank
1 point
What is the result of this list comprehension?
squares = [number ** 2 for number in range(5) if number % 2 == 0]
Answer:
10
Choose one
1 point
Which expression can be used as a dictionary key?
- A
([10, 20],) - B
(10, 20) - C
{10, 20} - D
[10, 20]
11
Choose all
1 point
Which two statements correctly describe iteration tools from the material? Select all correct choices.
- A
enumerate(colors)can provide each index and color. - B
zip(names, ages)can provide corresponding name–age pairs. - C
colors.index()is required to iterate through positions and values. - D
zip()can only combine dictionaries, not lists.
12
Open ended
1 point
A registration system must support two operations: checking whether a username is already registered, and retrieving the profile associated with a username. Explain which collection is appropriate for each operation and why. Also state what dictionary-based technique can remove duplicates from a list while preserving their first-seen order.
13
Choose one
1 point
What is assigned to item after this code runs?
stack = []stack.append("first")stack.append("second")item = stack.pop()
- A
"first" - B
Both items at once
- C
"second" - D
No item;
pop()only reads the list
14
Choose one
1 point
A program needs to store usernames without duplicates and repeatedly test whether a username is already registered. Which Python collection is the most appropriate choice?
- A
list
- B
tuple
- C
set
- D
dictionary
15
True or false
1 point
True or false: In Python, the stop index of a slice is excluded from the resulting sequence.
- A
True
- B
False
16
Written response
1 point
What collection type is returned by "Ada,Grace,Linus".split(",")?
17
Choose one
1 point
Given profile = {"name": "Ada"}, what does profile.get("country", "Unknown") return?
- A
None
- B
"Unknown"
- C
KeyError
- D
False
18
Choose one
1 point
What happens when this code runs?
point = (3, 4)
point[0] = 10
- A
The tuple changes to
(10, 4) - B
The assignment is silently ignored
- C
A
TypeErroris raised - D
A
KeyErroris raised
19
Written response
1 point
What is the zero-based index of the final character in the string "Python"?
20
Choose one
1 point
What is the value of evens after this statement executes?
evens = [number for number in range(10) if number % 2 == 0]
- A
[1, 3, 5, 7, 9] - B
[0, 2, 4, 6, 8] - C
[2, 4, 6, 8, 10] - D
[0, 1, 2, 3, 4]