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3.0 Python: Add Set Items

3.1 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.

3.1.1 Example​

Add an item to a set, using the add() method:

thisset = {"apple", "banana", "cherry"}

thisset.add("orange")

print(thisset)

3.2 Add Sets​

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

3.2.1 Example​

Add elements from tropical into thisset:

thisset = {"apple", "banana", "cherry"}
tropical = {"pineapple", "mango", "papaya"}

thisset.update(tropical)

print(thisset)

3.3 Add Any Iterable​

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

3.3.1 Example​

Add elements of a list to at set:

thisset = {"apple", "banana", "cherry"}
mylist = ["kiwi", "orange"]

thisset.update(mylist)

print(thisset)