参考链接： Python 集合set | symmetric_difference
classset(object):"""set() -> new empty set object
set(iterable) -> new set object
Build an unordered collection of unique elements."""
def add(self, *args, **kwargs):"""添加"""
"""Add an element to a set.
This has no effect if the element is already present."""
pass
def clear(self, *args, **kwargs):"""清除"""
"""Remove all elements from this set."""
pass
def copy(self, *args, **kwargs):"""浅拷贝"""
"""Return a shallow copy of a set."""
pass
def difference(self, *args, **kwargs):"""比较"""
"""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):"""Remove all elements of another set from this set."""
pass
def discard(self, *args, **kwargs):"""删除"""
"""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):"""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):"""Update a set with the intersection of itself and another."""
pass
def isdisjoint(self, *args, **kwargs):"""Return True if two sets have a null intersection."""
pass
def issubset(self, *args, **kwargs):"""Report whether another set contains this set."""
pass
def issuperset(self, *args, **kwargs):"""Report whether this set contains another set."""
pass
def pop(self, *args, **kwargs):"""Remove and return an arbitrary set element.
Raises KeyError if the set is empty."""
pass
def remove(self, *args, **kwargs):"""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):"""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):"""Update a set with the symmetric difference of itself and another."""
pass
def union(self, *args, **kwargs):"""Return the union of sets as a new set.
(i.e. all elements that are in either set.)"""
pass
def update(self, *args, **kwargs):"""Update a set with the union of itself and others."""
pass
def __and__(self, *args, **kwargs):"""Return self&value."""
pass
def __contains__(self, y):"""x.__contains__(y) <==> y in x."""
pass
def __eq__(self, *args, **kwargs):"""Return self==value."""
pass
def __getattribute__(self, *args, **kwargs):"""Return getattr(self, name)."""
pass
def __ge__(self, *args, **kwargs):"""Return self>=value."""
pass
def __gt__(self, *args, **kwargs):"""Return self>value."""
pass
def __iand__(self, *args, **kwargs):"""Return self&=value."""
pass
def __init__(self, seq=()): #known special case of set.__init__
"""set() -> new empty set object
set(iterable) -> new set object
Build an unordered collection of unique elements.
# (copied from class doc)"""
pass
def __ior__(self, *args, **kwargs):"""Return self|=value."""
pass
def __isub__(self, *args, **kwargs):"""Return self-=value."""
pass
def __iter__(self, *args, **kwargs):"""Implement iter(self)."""
pass
def __ixor__(self, *args, **kwargs):"""Return self^=value."""
pass
def __len__(self, *args, **kwargs):"""Return len(self)."""
pass
def __le__(self, *args, **kwargs):"""Return self<=value."""
pass
def __lt__(self, *args, **kwargs):"""Return self
pass@staticmethoddef __new__(*args, **kwargs):"""Create and return a new object. See help(type) for accurate signature."""
pass
def __ne__(self, *args, **kwargs):"""Return self!=value."""
pass
def __or__(self, *args, **kwargs):"""Return self|value."""
pass
def __rand__(self, *args, **kwargs):"""Return value&self."""
pass
def __reduce__(self, *args, **kwargs):"""Return state information for pickling."""
pass
def __repr__(self, *args, **kwargs):"""Return repr(self)."""
pass
def __ror__(self, *args, **kwargs):"""Return value|self."""
pass
def __rsub__(self, *args, **kwargs):"""Return value-self."""
pass
def __rxor__(self, *args, **kwargs):"""Return value^self."""
pass
def __sizeof__(self):"""S.__sizeof__() -> size of S in memory, in bytes"""
pass
def __sub__(self, *args, **kwargs):"""Return self-value."""
pass
def __xor__(self, *args, **kwargs):"""Return self^value."""
pass
__hash__ = None
