Python List Methods

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Questions and Answers

What does the List.insert() function do?

Reverses the order of the list.
Counts occurrences of an element.
Deletes an element from the list.
Adds an element at a specified position. (correct)

Which function would you use to remove all elements from a list?

List.clear() (correct)
List.index()
List.remove()
List.pop()

How can you sort a list in descending order using List.sort()?

List.sort(reverse=True) (correct)
List.sort(descending=True)
List.sort(order=False)
List.sort(ascending=False)

What is the purpose of List.count()?

<p>To count occurrences of a specific element. (A)</p> Signup and view all the answers

What does List.pop() do if called without an index?

<p>Removes the last element of the list. (B)</p> Signup and view all the answers

Flashcards

List.index()

Finds the index of an item in a list.

List.append()

Adds an item to the end of a list.

List.insert()

Adds an element at a specific position in a list.

List.pop()

Removes and returns an item at a given index(last by default).

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List.sort(reverse=True)

Sorts a list in descending order.

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Study Notes

List Methods

list.index(): Returns the index of a specified item in a list.
list.append(): Adds an item to the end of a list.
list.extend(): Appends a list (passed as an argument) to the end of the calling list.
list.insert(index, item): Inserts an item at a specific position (index).
list.pop([index]): Removes and returns an item from a list. If no index is provided, removes and returns the last item.
list.remove(value): Removes the first occurrence of a specified value in the list. Does not return the removed value.
list.clear(): Removes all items from a list, making it empty.
list.count(value): Counts and returns the number of times a specified value appears in the list.
list.reverse(): Reverses the order of items in the list. Does not create a new list; modifies the original.
list.sort(): Sorts the list in ascending order.
list.sort(reverse=True): Sorts the list in descending order.

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Description

Test your knowledge on Python's list methods with this quiz. From appending items to reversing the list, this quiz covers essential operations that you need to master for effective programming. Challenge yourself and see how well you understand these fundamental techniques!