List Methods

Question 1

.append(elem)

Answer 1

(list method)

adds an element to the end of a list

returns None (modifies list in place)

Question 2

.clear()

Answer 2

(list method)

removes all elements from the list

returns None (modifies list in place)

Question 3

.copy()

Answer 3

(list method)

Returns a copy of the list

Question 4

.count(elem)

Answer 4

(list method)

returns the number of elements with the specified value in the list

Question 5

.extend([elem,elem])

Answer 5

(list method)

Add the elements of a list (or any iterable), to the end of the current list

returns None (modifies list in place)

Question 6

.index(elem)

Answer 6

(list method)

Returns the index of the first element with the specified value

Question 7

.insert(idx, elem)

Answer 7

(list method)

adds an element to the list at specified index

returns None (modifies list in place)

Question 8

.pop(idx)

Answer 8

(list method)

removes element from specified position

default value is -1, meaning the last element in the list

Returns the removed element

Question 9

.remove(elem)

Answer 9

(list method)

removes the first item with the specified value

returns None (modifies list in place)

Question 10

.reverse()

Answer 10

(list method)

reverses the order of the list

returns None (modifies list in place)

Question 11

.sort()

Answer 11

(list method)

sorts the list

returns None (modifies list in place)

Question 12

len(list)

Answer 12

returns the number of elements in a list

Question 13

List Slicing

list[start:end]

Answer 13

start idx is included in new list
end idx is not included in new list

returns the new list; leaves original list unmodified

Question 14

sorted(list)

Answer 14

returns a new sorted list

.sort() is faster than sorted()