INF1511-MCQ-PACK.

INF1511-MCQ-PACK.

,INF1511-MCQ-PACK.


1. Which of the following are true for objects of Python’s set type:


The order of elements in a set is significant.

A given element can’t appear in a set more than once.

A set may contain elements that are mutable.

Sets are mutable.



2. Which of the following define the set {'a', 'b', 'c'}:
s = {('a', 'b', 'c')}

s = set('a', 'b', 'c')




3. What Python expression tests whether the string 'foo' is a
member of set s?
'foo' in s


4. You have a set s defined as follows:

s = {100, 200, 300}

Which one of the following statements does not correctly
produce the union of s and the set {300, 400, 500}:

s | [300, 400, 500]

s | {300, 400, 500}

s.union({300, 400, 500})

s | set([300, 400, 500])

s.union([300, 400, 500])

s.union(set([300, 400, 500]))

, INF1511-MCQ-PACK.

5. What is the result of this statement:


{'b', 'r', 'a'}
{'q', 'r', 'x', 'u', 'b', 'a'}
{}
set()


6. What is the result of this statement:


{1, 2, 6, 7}
set()
{1, 2}
{3, 4, 5, 6, 7}


7. Consider the following expression involving two sets x and y:


This expression is True for any sets x and y—true or false?

False
True


8. What is the result of the highlighted expression:




It raises an exception.
set()
True
False