1 class set(object):
2 """
3 set() -> new empty set object
4 set(iterable) -> new set object
5
6 Build an unordered collection of unique elements.
7 """
8 def add(self, *args, **kwargs): # real signature unknown
9 """
10 Add an element to a set. #添加元素
11
12 This has no effect if the element is already present.
13 """
14 pass
15
16 def clear(self, *args, **kwargs): # real signature unknown
17 """ Remove all elements from this set. """ #清除所有元素
18 pass
19
20 def copy(self, *args, **kwargs): # real signature unknown
21 """ Return a shallow copy of a set. """ #浅拷贝
22 pass
23
24 def difference(self, *args, **kwargs): # real signature unknown
25 """
26 Return the difference of two or more sets as a new set. #a中存在,b中不存在
27
28 (i.e. all elements that are in this set but not the others.)
29 """
30 pass
31
32 def difference_update(self, *args, **kwargs): # real signature unknown
33 """ Remove all elements of another set from this set. 从当前集合中删除和B中相同的元素"""
34 pass
35
36 def discard(self, *args, **kwargs): # real signature unknown
37 """
38 Remove an element from a set if it is a member. 移除指定元素,不存在不报错
39
40 If the element is not a member, do nothing.
41 """
42 pass
43
44 def intersection(self, *args, **kwargs): # real signature unknown
45 """
46 Return the intersection of two sets as a new set. 交集
47
48 (i.e. all elements that are in both sets.)
49 """
50 pass
51
52 def intersection_update(self, *args, **kwargs): # real signature unknown
53 """ Update a set with the intersection of itself and another. 取交集并更新到a中 """
54 pass
55
56 def isdisjoint(self, *args, **kwargs): # real signature unknown
57 """ Return True if two sets have a null intersection. 如果没有交集,返回True """
58 pass
59
60 def issubset(self, *args, **kwargs): # real signature unknown
61 """ Report whether another set contains this set. 是否是子序列 """
62 pass
63
64 def issuperset(self, *args, **kwargs): # real signature unknown
65 """ Report whether this set contains another set. 是否是父序列"""
66 pass
67
68 def pop(self, *args, **kwargs): # real signature unknown
69 """
70 Remove and return an arbitrary set element. 移除元素
71 Raises KeyError if the set is empty.
72 """
73 pass
74
75 def remove(self, *args, **kwargs): # real signature unknown
76 """
77 Remove an element from a set; it must be a member. 移除指定元素,不存在保错
78
79 If the element is not a member, raise a KeyError.
80 """
81 pass
82
83 def symmetric_difference(self, *args, **kwargs): # real signature unknown
84 """
85 Return the symmetric difference of two sets as a new set. 对称差集,a有b没有 + b有a没有
86
87 (i.e. all elements that are in exactly one of the sets.)
88 """
89 pass
90
91 def symmetric_difference_update(self, *args, **kwargs): # real signature unknown
92 """ Update a set with the symmetric difference of itself and another. """ 对称差集,并更新到a中
93 pass
94
95 def union(self, *args, **kwargs): # real signature unknown
96 """
97 Return the union of sets as a new set. 并集
98
99 (i.e. all elements that are in either set.)
100 """
101 pass
102
103 def update(self, *args, **kwargs): # real signature unknown
104 """ Update a set with the union of itself and others. 更新,一般把一个list通过迭代方式更新到set集群中"""
105 pass