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The add() method
Add single elements with add(): python colors = {"red", "blue"} colors.add("green") print(colors) # {"red", "blue", "green"} To add multiple elements at once, use update(): python colors.update(["yellow", "purple"]) print(colors) # {"red", "blue", "green", "yellow", "purple"} If you add something already in the set, nothing happens.
No error, no duplicate.
