# 1.set 无序，不重复
# 创建集合的三种方式：
# s1 = {11,22}
# s2 = set() #空集合
# or
# s3 = set([11,22,33,4])
# print(type(set))
# 2.操作集合
# s = set()
# print(s)
# s.add(123)
# print(s)
# s.clear()#清除所有的内容
# print(s)
# s.copy()#浅拷贝
# print(s)
# s1 = {11,22,33}
# s2 = {22,33,44,55}
#差集，从一个集合减去另一个集合
#s3 = s1.difference(s2)
# s3 = s2.difference(s1)
# s3 = s1.symmetric_difference(s2)#对称差集，不同的取出
# print(s3)
# s1.difference_update(s2)#不同更新进s1
# print(s1)
#删
# s1 = {11,22,33,44,55}
# s1.discard(11)#指定移除，不存在不报错
# s1.remove(22)#指定移除，不存在报错
# ret = s1.pop()#随机移除，这样知道随机移除的哪一个
# print(s1)
# print(ret)
# s1 = {11,22,33}
# s2 = {22,33,44,55}
# # print(s1.intersection(s2))#取交集
# # s1.intersection_update(s2)#取出交集并更新给s1
# # print(s1)
# # print(s1.union(s2))#取交集
# li = [11,22,33,44,55,66]
# s1.update(li)#批量添加，更新，可以被for循环的对象
# print(s1)
class set(object):
"""
set() -> new empty set object
set(iterable)(元组) -> new set object
Build an unordered collection of unique elements.
"""
def add(self, *args, **kwargs): # real signature unknown
"""
Add an element to a set.
This has no effect if the element is already present.
"""
pass#添加
def clear(self, *args, **kwargs): # real signature unknown
""" Remove all elements from this set. """
pass#清空
def copy(self, *args, **kwargs): # real signature unknown
""" Return a shallow copy of a set. """
pass#复制
def difference(self, *args, **kwargs): # real signature unknown
"""
Return the difference of two or more sets as a new set.
(i.e. all elements that are in this set but not the others.)
"""
pass#取不同的值
def difference_update(self, *args, **kwargs): # real signature unknown
""" Remove all elements of another set from this set. """
pass#不同的进行更新
def discard(self, *args, **kwargs): # real signature unknown
"""
Remove an element from a set if it is a member.
If the element is not a member, do nothing.
"""
pass
def intersection(self, *args, **kwargs): # real signature unknown
"""
Return the intersection of two sets as a new set.
(i.e. all elements that are in both sets.)
"""
pass
def intersection_update(self, *args, **kwargs): # real signature unknown
""" Update a set with the intersection of itself and another. """
pass
def isdisjoint(self, *args, **kwargs): # real signature unknown
""" Return True if two sets have a null intersection. """
pass
def issubset(self, *args, **kwargs): # real signature unknown
""" Report whether another set contains this set. """
pass
def issuperset(self, *args, **kwargs): # real signature unknown
""" Report whether this set contains another set. """
pass
def pop(self, *args, **kwargs): # real signature unknown
"""
Remove and return an arbitrary set element.
Raises KeyError if the set is empty.
"""
pass#删除
def remove(self, *args, **kwargs): # real signature unknown
"""
Remove an element from a set; it must be a member.
If the element is not a member, raise a KeyError.
"""
pass#移除
def symmetric_difference(self, *args, **kwargs): # real signature unknown
"""
Return the symmetric difference of two sets as a new set.
(i.e. all elements that are in exactly one of the sets.)
"""
pass#两个集合不同的取出
def symmetric_difference_update(self, *args, **kwargs): # real signature unknown
""" Update a set with the symmetric difference of itself and another. """
pass
def union(self, *args, **kwargs): # real signature unknown
"""
Return the union of sets as a new set.
(i.e. all elements that are in either set.)
"""
pass
def update(self, *args, **kwargs): # real signature unknown
""" Update a set with the union of itself and others. """
pass#更新，把一个集合有的更新到另一个集合没有的
