सेट और सेट संक्रियाएँ

s = {1, 2, 2, 3}
print(s)  # {1, 2, 3}
empty = set()
print(type(empty))

s = {1, 2, 3}
s.add(4)
s.discard(9)  # safe
print(s)

s = {1, 2, 3}
print(2 in s)
print(9 in s)

a = {1, 2, 3}
b = {3, 4, 5}
print(a | b)

a = {1, 2, 3}
b = {2, 3, 4}
print(a & b)

a = {1, 2, 3}
b = {2, 3, 4}
print(a - b)

a = {1, 2, 3}
b = {2, 3, 4}
print(a ^ b)

a = {1, 2}
b = {1, 2, 3}
print(a <= b)
print(b >= a)

fs = frozenset([1, 2, 3])
d = {fs: 'value'}
print(d[fs])

evens = {x*2 for x in range(5)}
print(evens)