python中set的用法：详细源码示例

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python代码如下：

# python中set函数基本用法示例（四海网整理）

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): 
        """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 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

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关键词：set函数