s = {1, 2, 3}

print(s)

{1, 2, 3}

print(len(s)) 

3

print(2 in s)

True

print(2 in s)

True

s.add(4)

print(s)

{1, 2, 3, 4}

s.remove(3)

print(s)

{1, 2, 4}

s.discard(5)

print(s)

{1, 2, 4}

s.update([5, 6])

print(s)

{1, 2, 3}

s.clear()

print(s)

{1, 2, 3}

s = set([1, 2, 3])

print(s)

{1, 2, 3}

print(set("hello"))

{'o', 'l', 'h', 'e'}

a = {1, 2, 3}
b = {3, 4, 5}

#union

print(a | b)  

{1, 2, 3, 4, 5}

#intersection

print(a & b)  

{3}

# difference

print(a - b) 

{1, 2}

print(b - a) 

{4, 5}

# symmetric difference

print(a ^ b) 

{1, 2, 4, 5}

print(a.union(b))

{1, 2, 3, 4, 5}

print(a.intersection(b))

{3}

print(a.difference(b))

{1, 2}

print(a.symmetric_difference(b))

{1, 2, 4, 5}

a |= b

print(a)

{1, 2, 4, 5}

a = {1, 2, 3}
a &= b

print(a)

{3}

a = {1, 2, 3}
a -= b

print(a)

{1, 2}

a = {1, 2, 3}
a ^= b

print(a)

{1, 2, 4, 5}

print(a.isdisjoint(b))

False

print(a.issubset(b))

False

print(a.issuperset(b))

False

a = {1, 2}
b = {1, 2, 3}

print(a < b) 

True

print(b > a)

True

print(bool(set()))

False

print(set(range(5)))

{0, 1, 2, 3, 4}

s = {1, 2, 3}

for i in s:
    print(i)

1
2
3

s1 = {1, 2, 3}
s2 = s1.copy()

print(s2)

{1, 2, 3}

print(s1 is s2)

False

print(s1 == s2) 

True

s = {1, 2, 2, 3}

print(s)

{1, 2, 3}

print(len({1, 2, 2, 3}))

3

print(set([1, 2, 2, 3]))

{1, 2, 3}

a = {1, 2, 3}
b = {2, 3}

print(b <= a)

True

print(a >= b) 

True

print({x for x in range(10) if x % 2 == 0})

{0, 2, 4, 6, 8}

print(set("banana")) 

{'n', 'b', 'a'}

print({x.upper() for x in "abc"})

{'B', 'A', 'C'}

s = {1, 2, 3}
s2 = frozenset(s)

print(s2)

frozenset({1, 2, 3})

print(type(s))

<class 'set'>

s = set()
s.add(1)

print(s)

{1}

print(set()) 

set()

print({})

{}

print({1, 2}.union([3, 4]))

{1, 2, 3, 4}

print({1, 2}.intersection([2, 3]))

{2}

print({1, 2}.difference([2]))

{1}

print({1, 2}.symmetric_difference([2, 3]))

{1, 3}

print(set("abc") & set("bcd"))

{'b', 'c'}

print(set("abc") | set("bcd"))

{'b', 'a', 'd', 'c'}

print(set("abc") - set("bcd"))

{'a'}

print(set("abc") ^ set("bcd"))

{'a', 'd'}

x = {1, 2}

print(all(i < 3 for i in x))

True

print(any(i > 1 for i in x))

True

print(max(x), min(x))

2 1

print(sum(x))

3

print(sorted(x))

[1, 2]

print(sorted(set("banana")))

['a', 'b', 'n']

print(len(set("mississippi")))

4

s = set("hello")

print("h" in s)

True

print("z" not in s)

True

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

print(s)

{0, 1, 4, 9, 16}

print(set(range(5)) & set(range(3, 8)))

{3, 4}

print(set(range(5)) - set(range(3, 8)))

{0, 1, 2}

print(set(range(5)) ^ set(range(3, 8)))

{0, 1, 2, 5, 6, 7}

a = {1, 2}
b = a

a.add(3)

print(b)

{1, 2, 3}

a = {1, 2}

b = a.copy()

a.add(3)

print(b) 

{1, 2}

print(hash(frozenset([1, 2])))

-1826646154956904602

fs = frozenset("hello")

print("e" in fs)

True

print(fs.isdisjoint({"x", "y"}))

True

fs2 = frozenset("help")

print(fs & fs2)

frozenset({'l', 'h', 'e'})

print(fs | fs2)

frozenset({'o', 'p', 'l', 'h', 'e'})

print(fs - fs2)

frozenset({'o'})

print(fs ^ fs2)

frozenset({'o', 'p'})

a = set("python")

print([ch for ch in a])

['o', 'p', 'h', 't', 'y', 'n']

print({i for i in range(10) if i % 3 == 0})

{0, 9, 3, 6}

s = set([None, False, 0, "", 1])

print(s)

{None, False, '', 1}

print(set([1, 2, 3]) == set([3, 2, 1]))

True

print(set("abc").intersection("cba"))

{'b', 'a', 'c'}

print(set("abc").issubset("abcd"))

True

print(set("abcd").issuperset("abc"))

True

print(set("abc").isdisjoint("xyz"))

True

x = {"a", "b"}

y = {"c", "d"}

z = {"b", "c"}

print(x.isdisjoint(y)) 

True

print(x.isdisjoint(z)) 

False

print(set(map(int, ["1", "2", "2"])))

{1, 2}

print(set(filter(lambda x: x % 2 == 0, range(10))))

{0, 2, 4, 6, 8}

print(set(i for i in range(5) if i % 2))

{1, 3}

print(set(zip([1, 2], [3, 4])))

{(2, 4), (1, 3)}

print(set(i*i for i in range(5)))

{0, 1, 4, 9, 16}

print(set(i for i in range(5)).issubset(range(10)))

True

print(set("abc").union("def"))

{'f', 'c', 'b', 'a', 'd', 'e'}

print(set("abcdef") - set("ace"))

{'b', 'f', 'd'}

print(set(chr(i) for i in range(65, 70)))

{'A', 'B', 'C', 'D', 'E'}

print(set().union([1, 2], [2, 3]))

{1, 2, 3}

print(set().intersection([1, 2], [2, 3]))

set()

print(set().difference([1, 2], [2, 3]))

set()

a = {1, 2, 3}
for val in a.copy():
    if val % 2 == 0:
        a.remove(val)
print(a)

{1, 3}

a = set("banana")
for ch in "ban":
    a.discard(ch)
print(a)

set()

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

True

print({1, 2}.issuperset({1}))

True

print({1}.issubset({1, 2}))

True

print(set(range(3)).intersection(range(5)))

{0, 1, 2}

print(set(range(5)).difference(range(3)))

{3, 4}

print(set(range(5)).symmetric_difference(range(3)))

{3, 4}

print({i for i in range(10) if i not in {1, 3, 5}})

{0, 2, 4, 6, 7, 8, 9}

print(set(i for i in range(3)).union([3, 4]))

{0, 1, 2, 3, 4}

print(set(i for i in range(3)).difference({1}))

{0, 2}

print(set(i for i in range(3)).symmetric_difference({2}))

{0, 1}

print(set("a b c".split()))

{'b', 'a', 'c'}

print(set("a,b,c".split(",")))

{'b', 'a', 'c'}

print(set("123") & set("345"))

{'3'}

print(set(["apple", "banana", "apple"]))

{'apple', 'banana'}

words = {"python", "java", "c"}
print({w.upper() for w in words})

{'JAVA', 'C', 'PYTHON'}

print({x for x in range(5)} == {0, 1, 2, 3, 4})

True

print(set("Hello".lower()) == set("hello"))

True

print({i for i in range(100) if str(i).endswith("5")})

{65, 35, 5, 75, 45, 15, 85, 55, 25, 95}