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Grokking Python Fundamentals

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What is the primary characteristic of a set in Python?

A

Sets are ordered collections.

B

Sets can contain duplicate elements.

C

Sets ensure elements are unique and unordered.

D

Sets allow mutable elements.

What will be the output of the following code?

set1 = {1, 2, 3, 4}
set2 = {3, 4, 5, 6}
difference = set1.difference(set2)
print(difference)

A

{1, 2}

B

{3, 4}

C

{5, 6}

D

{1, 2, 3, 4}

What does the following set method do?

fruits = {'apple', 'banana', 'cherry'}
fruits.clear()
print(fruits)

A

{'apple', 'banana', 'cherry'}

B

{}

C

{'cherry'}

D

Error

What is the result of the following set operation?

set1 = {1, 2, 3}
set2 = {3, 4, 5}
result = set1.union(set2)
print(result)

A

{3}

B

{1, 2, 4, 5}

C

Error

D

{1, 2, 3, 4, 5}

How does a set differ from a list in terms of storage and performance?

A

Sets store elements more compactly and provide faster access.

B

Lists store elements more efficiently and allow quicker modifications.

C

Sets provide faster lookups compared to lists, especially for large data sets.

D

Lists are always faster for accessing elements by index.

.....

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