# 聲明
basket = {'apple', 'orange', 'apple', 'pear', 'orange', 'banana'}
print(basket)

set_ = {1, 1, 1, 1, 2}
print(set_)


# 輸出結(jié)果
{'orange', 'pear', 'banana', 'apple'}
{1, 2}

set_ = {{1, }, {1, }}
print(set_)

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


# 輸出結(jié)果
    set_ = {{1, }, {1, }}
TypeError: unhashable type: 'set'


    set_ = {[1, ], [2, ]}
TypeError: unhashable type: 'list'

set_ = {1, 1, 1, 1, 2}
set[1]


# 輸出結(jié)果
    set[1]
TypeError: 'type' object is not subscriptable

set_ = {}
print(set_, type(set_))


# 輸出結(jié)果
{} <class 'dict'>

set_ = set()
print(set_, type(set_))


# 輸出結(jié)果
set() <class 'set'>

>>> {1, 2} | {3, 4}
{1, 2, 3, 4}
>>> {1, 2} | {3, 4} | {5, 6}
{1, 2, 3, 4, 5, 6}

>>> {1, 2, 3, 4} - {3, 4, 5, 6}
{1, 2}

>>> {1, 2, 3} & {3, 4, 5}
{3}

>>> {1, 2, 3} ^ {3, 4, 5}
{1, 2, 4, 5}

>>> 'polo' in {'www', 'polo', 'com'}
True
>>> 'yy' in {'www', 'yyy', 'com'}
False

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

>>> max({1, 2})
2
>>> max({1, 3, 2})
3

>>> min({1, 2})
1
>>> min({1, 3, 2})
1

# add
set_ = {1, 2, 3}
set_.add(1)
set_.add(4)
set_.add("5")
print(set_)

# remove
set_ = {1, 2, 3}
set_.remove(2)
print(set_)


# 輸出結(jié)果
{1, 3}

# remove
set_ = {1, 2, 3}
print(set_)
set_.clear()
print(set_)


# 輸出結(jié)果
{1, 2, 3}
set()

# pop
a = {1, 2, 3, 4}
print(a.pop())
print(a.pop())
print(a)


# 輸出結(jié)果
1
2
{3, 4}

# difference
a = {1, 2, 3, 4}
b = {2, 3, 5}
print(a.difference(b))


# 輸出結(jié)果
{1, 4}

# union
set1 = {1, 2, 3}
set2 = {3, 4, 5}
print(set1.union(set2))


# 輸出結(jié)果
{1, 2, 3, 4, 5}

# intersection
set1 = {1, 2, 3}
set2 = {3, 4, 5}
print(set1.intersection(set2))


# 輸出結(jié)果
{3}

# issubset
set1 = {1, 2}
set2 = {1, 2, 3}
print(set1.issubset(set2))


# 輸出結(jié)果
True

# issuperset
set1 = {1, 2, 3}
set2 = {1, 2}
print(set1.issuperset(set2))


# 輸出結(jié)果
True