集合操作①定义集合。vegetables = cabbage potato tomato cucumberfruits = apple orange banana tomato cucumber②遍历集合。输出fruits所有元素。③添加集合元素。添加 peach到fruits。python编写

①

vegetables = {'cabbage', 'potato', 'tomato', 'cucumber'}
fruits = {'apple', 'orange', 'banana', 'tomato', 'cucumber'}

②

for fruit in fruits:
    print(fruit)

输出结果：

apple
orange
banana
tomato
cucumber

③

fruits.add('peach')

现在fruits集合中包含 'peach' 元素。