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    ^u_                 @   sZ   d Z ddlmZmZmZ ddlmZ ddlmZ dd Z	dd	 Z
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Commonly used hooks for on_setattr.
    )absolute_importdivisionprint_function   )_config)FrozenAttributeErrorc                 s    fdd}|S )zf
    Run all *setters* and return the return value of the last one.

    .. versionadded:: 20.1.0
    c                s"   |}x D ]}|| ||}q
W |S )N )instanceattrib	new_valuervsetter)settersr   =/opt/alt/python37/lib/python3.7/site-packages/attr/setters.pywrapped_pipe   s    
zpipe.<locals>.wrapped_piper   )r   r   r   )r   r   pipe   s    r   c             C   s
   t  dS )zL
    Prevent an attribute to be modified.

    .. versionadded:: 20.1.0
    N)r   )___Z___r   r   r   frozen   s    r   c             C   s,   t jdkr|S |j}|s|S || || |S )z^
    Run *attrib*'s validator on *new_value* if it has one.

    .. versionadded:: 20.1.0
    F)r   Z_run_validators	validator)r	   r
   r   vr   r   r   validate&   s    
r   c             C   s   |j }|r||S |S )z
    Run *attrib*'s converter -- if it has one --  on *new_value* and return the
    result.

    .. versionadded:: 20.1.0
    )	converter)r	   r
   r   cr   r   r   convert8   s    r   N)__doc__
__future__r   r   r    r   
exceptionsr   r   r   r   r   objectZNO_OPr   r   r   r   <module>   s   	