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    ,\                 @   sF   yd dl mZ W n  ek
r0   d dlmZ Y nX G dd deZdS )    )
MutableSetc               @   s   e Zd ZdZdd Zdd ZejZej	Z
ejZejZejZejZdd Zdd	 Zd
d Zdd Zdd Zdd Zedd ZdS )SetMixinzA
    Mix-in for sets.  You must define __iter__, add, remove
    c             C   s   d}x| D ]}|d7 }q
W |S )Nr       )selflengthitemr   r   F/opt/alt/python37/lib64/python3.7/site-packages/lxml/html/_setmixin.py__len__   s    
zSetMixin.__len__c             C   s   x| D ]}||krdS qW dS )NTFr   )r   r   Zhas_itemr   r   r	   __contains__   s    
zSetMixin.__contains__c             C   s   t | S )N)set)r   r   r   r	   copy!   s    zSetMixin.copyc             C   s   | |O } d S )Nr   )r   otherr   r   r	   update$   s    zSetMixin.updatec             C   s   | |M } d S )Nr   )r   r   r   r   r	   intersection_update'   s    zSetMixin.intersection_updatec             C   s   | |8 } d S )Nr   )r   r   r   r   r	   difference_update*   s    zSetMixin.difference_updatec             C   s   | |N } d S )Nr   )r   r   r   r   r	   symmetric_difference_update-   s    z$SetMixin.symmetric_difference_updatec             C   s(   y|  | W n tk
r"   Y nX d S )N)removeKeyError)r   r   r   r   r	   discard0   s    zSetMixin.discardc             C   s   t |S )N)r   )clsitr   r   r	   _from_iterable6   s    zSetMixin._from_iterableN)__name__
__module____qualname____doc__r
   r   r   __le__issubset__ge__
issuperset__or__union__and__intersection__sub__
difference__xor__symmetric_differencer   r   r   r   r   r   classmethodr   r   r   r   r	   r      s    r   N)collections.abcr   ImportErrorcollectionsr   r   r   r   r	   <module>   s   