[Python tutorial] 24. Set Methods

set.add(elmnt)

Adds an element to the set

fruits = {"apple", "banana", "cherry"}
fruits.add("orange")

set.clear()

Removes all the elements from the set

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

set.copy()

Returns a copy of the set

fruits = {"apple", "banana", "cherry"}
x = fruits.copy()

set.difference(set)

Returns a set containing the difference between two or more sets

x = {"apple", "banana", "cherry"}
y = {"google", "microsoft", "apple"}
z = x.difference(y)

set.difference_update(set)

Removes the items in this set that are also included in another, specified set

x = {"apple", "banana", "cherry"}
y = {"google", "microsoft", "apple"}
x.difference_update(y)

set.discard(value)

Remove the specified item

fruits = {"apple", "banana", "cherry"}
fruits.discard("banana") 

set.intersection(set1, set2 ... etc)

Returns a set, that is the intersection of two or more sets

x = {"apple", "banana", "cherry"}
y = {"google", "microsoft", "apple"}
z = x.intersection(y)

set.intersection_update(set1, set2 ... etc)

Removes the items in this set that are not present in other, specified set(s)

x = {"apple", "banana", "cherry"}
y = {"google", "microsoft", "apple"}
x.intersection_update(y)

set.isdisjoint(set)

Returns whether two sets have a intersection or not

x = {"apple", "banana", "cherry"}
y = {"google", "microsoft", "facebook"}
z = x.isdisjoint(y) 

set.issubset(set)

Returns whether another set contains this set or not

x = {"a", "b", "c"}
y = {"f", "e", "d", "c", "b", "a"}
z = x.issubset(y) 

set.issuperset(set)

Returns whether this set contains another set or not

x = {"f", "e", "d", "c", "b", "a"}
y = {"a", "b", "c"}
z = x.issuperset(y) 

set.pop()

Removes an element from the set

fruits = {"apple", "banana", "cherry"}
fruits.pop() 

set.remove(item)

Removes the specified element

fruits = {"apple", "banana", "cherry"}
fruits.remove("banana") 

set.symmetric_difference(set)

Returns a set with the symmetric differences of two sets

x = {"apple", "banana", "cherry"}
y = {"google", "microsoft", "apple"}
z = x.symmetric_difference(y) 

set.symmetric_difference_update(set)

inserts the symmetric differences from this set and another

x = {"apple", "banana", "cherry"}
y = {"google", "microsoft", "apple"}
x.symmetric_difference_update(y) 

set.union(set1, set2...)

Return a set containing the union of sets

x = {"apple", "banana", "cherry"}
y = {"google", "microsoft", "apple"}
z = x.union(y) 

set.update(set)

Update the set with another set, or any other iterable

x = {"apple", "banana", "cherry"}
y = {"google", "microsoft", "apple"}
x.update(y)