Python Set Methods

Question 1

add()

Answer 1

The add() method adds an element to the set.

set.add(elmnt)

fruits = {“apple”, “banana”, “cherry”}

fruits.add(“orange”)

Question 2

clear()

Answer 2

The clear() method removes all elements in a set.

set.clear()

fruits = {“apple”, “banana”, “cherry”}

fruits.clear()

Question 3

copy()

Answer 3

The copy() method copies the set.

set.copy()

fruits = {“apple”, “banana”, “cherry”}

x = fruits.copy()

Question 4

difference()

Answer 4

The difference() method returns a set that contains the difference between two sets.

set.difference(set)

x = {"apple", "banana", "cherry"}
y = {"google", "microsoft", "apple"}

z = x.difference(y)

Question 5

difference_update()

Answer 5

The difference_update() method removes the items that exist in both sets.

set.difference_update(set)

x = {"apple", "banana", "cherry"}
y = {"google", "microsoft", "apple"}

x.difference_update(y)

Question 6

discard()

Answer 6

The discard() method removes the specified item from the set.

set.discard(value)

fruits = {“apple”, “banana”, “cherry”}

fruits.discard(“banana”)

Question 7

intersection()

Answer 7

The intersection() method returns a set that contains the similarity between two or more sets.

set.intersection(set1, set2 … etc)

x = {"apple", "banana", "cherry"}
y = {"google", "microsoft", "apple"}

z = x.intersection(y)

Question 8

intersection_update()

Answer 8

The intersection_update() method removes the items that is not present in both sets (or in all sets if the comparison is done between more than two sets).

set.intersection_update(set1, set2 … etc)

x = {"apple", "banana", "cherry"}
y = {"google", "microsoft", "apple"}

x.intersection_update(y)

Question 9

isdisjoint()

Answer 9

The isdisjoint() method returns True if none of the items are present in both sets, otherwise it returns False.

set.isdisjoint(set)

x = {"apple", "banana", "cherry"}
y = {"google", "microsoft", "facebook"}

z = x.isdisjoint(y)

Question 10

issubset()

Answer 10

The issubset() method returns True if all items in the set exists in the specified set, otherwise it retuns False.

set.issubset(set)

x = {"a", "b", "c"}
y = {"f", "e", "d", "c", "b", "a"}

z = x.issubset(y)

Question 11

issuperset()

Answer 11

The issuperset() method returns True if all items in the specified set exists in the original set, otherwise it retuns False.

set.issuperset(set)

x = {"f", "e", "d", "c", "b", "a"}
y = {"a", "b", "c"}

z = x.issuperset(y)

Question 12

pop()

Answer 12

The pop() method removes a random item from the set.

set.pop()

fruits = {“apple”, “banana”, “cherry”}

fruits.pop()

Question 13

remove()

Answer 13

The remove() method removes the specified element from the set.

set.remove(item)

fruits = {“apple”, “banana”, “cherry”}

fruits.remove(“banana”)

Question 14

symmetric_difference()

Answer 14

The symmetric_difference() method returns a set that contains all items from both set, but not the items that are present in both sets.

set.symmetric_difference(set)

x = {"apple", "banana", "cherry"}
y = {"google", "microsoft", "apple"}

z = x.symmetric_difference(y)

Question 15

symmetric_difference_update()

Answer 15

The symmetric_difference_update() method updates the original set by removing items that are present in both sets, and inserting the other items.

set.symmetric_difference_update(set)

x = {"apple", "banana", "cherry"}
y = {"google", "microsoft", "apple"}

x.symmetric_difference_update(y)

Question 16

union()

Answer 16

The union() method returns a set that contains all items from the original set, and all items from the specified set(s).

set.union(set1, set2…)

x = {"apple", "banana", "cherry"}
y = {"google", "microsoft", "apple"}

z = x.union(y)

Question 17

update()

Answer 17

The update() method updates the current set, by adding items from another set (or any other iterable).

set.update(set)

x = {"apple", "banana", "cherry"}
y = {"google", "microsoft", "apple"}

x.update(y)