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Editing: converters.cpython-38.opt-1.pyc
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U #IGZ � @ s$ d Z ddlmZmZmZ dd� ZdS )z Commonly useful converters. � )�absolute_import�division�print_functionc s � fdd�}|S )z� A converter that allows an attribute to be optional. An optional attribute is one which can be set to ``None``. :param callable converter: the converter that is used for non-``None`` values. .. versionadded:: 17.1.0 c s | d kr d S � | �S )N� )�val�� converterr �@/opt/alt/python38/lib/python3.8/site-packages/attr/converters.py�optional_converter s z$optional.<locals>.optional_converterr )r r r r r �optional s r N)�__doc__Z __future__r r r r r r r r �<module> s
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