Python Tutorials · Python Sets

Add Set Items

Learn all about Add Set Items in this comprehensive tutorial.

5 min read beginner

•To add one item to a set use the add() method.
•To add items from another set into the current set, use the update() method.
•The object in the update() method does not have to be a set, it can be any iterable object (tuples, lists, dictionaries etc.

Add Items

Note: Once a set is created, you cannot change its items, but you can add new items.

To add one item to a set use the add() method.

python

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

To add items from another set into the current set, use the update() method.

python

thisset = {"apple", "banana", "cherry"}tropical = {"pineapple", "mango", "papaya"}
  thisset.update(tropical)
print(thisset)

The object in the update() method does not have to be a set, it can be any iterable object (tuples, lists, dictionaries etc.).

python

thisset = {"apple", "banana", "cherry"}
  mylist = ["kiwi", "orange"]
  thisset.update(mylist)
print(thisset)

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