python语言，set集合详解

class set(object):
    """
    set() -> new empty set object
    set(iterable) -> new set object
    
    Build an unordered collection of unique elements.
    """
    def add(self, *args, **kwargs): # real signature unknown

        # 添加
        """
        Add an element to a set.
        
        This has no effect if the element is already present.
        """
        pass

    def clear(self, *args, **kwargs): # real signature unknown
        #清除
        """ Remove all elements from this set. """
        pass

    def copy(self, *args, **kwargs): # real signature unknown
        #拷贝
        """ Return a shallow copy of a set. """
        pass

    def difference(self, *args, **kwargs): # real signature unknown

        # #差集
        # print('差集',p_s-l_s)
        # print(p_s.difference(l_s))
        """
        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

    def difference_update(self, *args, **kwargs): # real signature unknown
        #差集
        # p_s=p_s-l_s
        # p_s.difference_update(l_s)
        # print(p_s)
        """ Remove all elements of another set from this set. """
        pass

    def discard(self, *args, **kwargs): # real signature unknown
        ## s.discard('sbbbb')#删除元素不存在不会报错
        """symmetric_difference
        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
        # #求交集
        # print(p_s,l_s)
        # print(p_s.intersection(l_s))
        # print(p_s&l_s)
        """
        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
        # s1={1,2}
        # s2={2,3,5}
        # print(s1.isdisjoint(s2))
        """ Return True if two sets have a null intersection. """
        pass

    def issubset(self, *args, **kwargs): # real signature unknown
        #s1 = {1, 2}
        # s2={1,2,3}
        # print(s1.issubset(s2))#s1 是s2 的子集
        """ Report whether another set contains this set. """
        pass

    def issuperset(self, *args, **kwargs): # real signature unknown
        #s1 = {1, 2}
        # s2={1,2,3}
        #print(s2.issuperset(s1))  # s1 是s2 的父集
        """ Report whether this set contains another set. """
        pass

    def pop(self, *args, **kwargs): # real signature unknown
        # 随机删
        # s.pop()
        """
        Remove and return an arbitrary set element.
        Raises KeyError if the set is empty.
        """
        pass

    def remove(self, *args, **kwargs): # real signature unknown
        # 指定删除
        # s.remove('hellol') #删除元素不存在会报错
        # s.discard('sbbbb')#删除元素不存在不会报错
        """
        Remove an element from a set; it must be a member.
        
        If the element is not a member, raise a KeyError.
        """
        pass

    def symmetric_difference(self, *args, **kwargs): # real signature unknown
        # print('交叉补集',p_s.symmetric_difference(l_s))
        # print('交叉补集',p_s^l_s)
        """
        Return the symmetric difference of two sets as a new set.
        
        (i.e. all elements that are in exactly one of the sets.)
        """
        pass

    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
        # #求并集
        # print(p_s.union(l_s))
        # print(p_s|l_s)
        """
        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

        # s1 = {1, 2}
        # s2 = {1, 2, 3}
        # s1.update(s2) #更新多个值
        """ Update a set with the union of itself and others. """
        pass