ExamAdept

What is the purpose of the index() method in Python lists?

A:

Finds the index of the first occurrence of a specific element.

B:

Finds the index of the last occurrence of a specific element.

C:

Returns the index of the maximum element in the list.

D:

Searches for an element in the list based on a condition.

Answer: A

The index() method in Python lists is used to find the index of the first occurrence of a specific element.

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How can you create a new list containing only the unique elements from an existing list in Python?

A:

new_list = list.unique()

B:

new_list = list.distinct()

C:

new_list = list(set(list))

D:

new_list = list.remove_duplicates()

Answer: C

Using set() to remove duplicates and then converting it back to a list creates a new list with unique elements.

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How can you find the average of elements in a numeric list in Python?

A:

average(list)

B:

sum(list) / len(list)

C:

mean(list)

D:

list.average()

Answer: B

The average of elements in a numeric list is calculated as the sum divided by the number of elements.

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What is the purpose of the sort() method in Python lists?

A:

Reverses the order of elements.

B:

Sorts the list in ascending order.

C:

Removes duplicate elements.

D:

Appends elements to the end of the list.

Answer: B

The sort() method in Python lists is used to sort the list in ascending order.

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What does the clear() method do in Python lists?

A:

Removes the last element from the list.

B:

Removes all occurrences of a specific element.

C:

Removes all elements from the list.

D:

Removes elements from the list based on a condition.

Answer: C

The clear() method in Python lists is used to remove all elements from the list, leaving it empty.

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Questions for: Lists