Set

a = {1, 2, 3, 2, 3, 4, 4, 5}
print(a)  # {1, 2, 3, 4, 5}
print(type(a))  # <class 'set'>

b = {2, 3, 7}
c = a - b
print(c)  # {1, 4, 5}

print(a)  # {1, 2, 3, 4, 5}
print(b)  # {2, 3, 7}

c = a & b
print(c)  # {2, 3} 교집합

c = a | b
print(c)  # {1, 2, 3, 4, 5, 7} 합집합

c = a ^ b
print(c)  # {1, 4, 5, 7} 대칭 차집합

####################################################################
s = {1, 2, 3, 4, 5}
s.add(6)
print(s)  # {1, 2, 3, 4, 5, 6}
s.remove(6)
print(s)  # {1, 2, 3, 4, 5}

l = [1, 2, 2]
x = set(l)
print(x)  # {1, 2}