"""
set

list
tuple
set
dictionary (dict)
"""

# 1st
# 'apple'

# 2nd
# 'pineapple'

# 3rd
# 'orange'

fruitset = {'apple','pineapple','orange'}
print(fruitset)

# unordered collection of items
# it cannot hold duplicated items
# unique item

numberset = {1,1,4,4,6,6}
print(numberset)

# how to create an empty set
set1 = {}
print(set1, type(set1))

set2 = set()
print(set2, type(set2))


# set itself is mutable (changeable)

# items in a set are immutable (unchangeable)
set3 = {'a',1,True,('a','b')}
print(set3)

# set4 = {'a',2,True, ['a','b']}



