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converters.cpython-312.pyc
� ��e& � �P � d Z ddlZddlmZ ddlmZmZmZ g d�Zd� Z edfd�Z d � Z y) z Commonly useful converters. � N� )�_AnnotationExtractor)�NOTHING�Factory�pipe)�default_if_none�optionalr �to_boolc �� � � � fd�}t � � }|j � }|r t j | |j d< |j � }|r t j | |j d< |S )aO A converter that allows an attribute to be optional. An optional attribute is one which can be set to ``None``. Type annotations will be inferred from the wrapped converter's, if it has any. :param callable converter: the converter that is used for non-``None`` values. .. versionadded:: 17.1.0 c � �� | �y �| � S �N� )�val� converters ��1/usr/lib/python3/dist-packages/attr/converters.py�optional_converterz$optional.<locals>.optional_converter$ s �� � �;����~� � r �return)r �get_first_param_type�typing�Optional�__annotations__�get_return_type)r r �xtr�t�rts ` r r r sp �� � � �y� )�C� � � �"�A��4:�O�O�A�4F��*�*�5�1� � � � �B� �7=���r�7J��*�*�8�4� � r c �� � � � t u r|� d}t |� �� t ur|� d}t |� �|� t |� � t � t � r � j r d}t |� �� fd�}|S � fd�}|S )a� A converter that allows to replace ``None`` values by *default* or the result of *factory*. :param default: Value to be used if ``None`` is passed. Passing an instance of `attrs.Factory` is supported, however the ``takes_self`` option is *not*. :param callable factory: A callable that takes no parameters whose result is used if ``None`` is passed. :raises TypeError: If **neither** *default* or *factory* is passed. :raises TypeError: If **both** *default* and *factory* are passed. :raises ValueError: If an instance of `attrs.Factory` is passed with ``takes_self=True``. .. versionadded:: 18.2.0 z(Must pass either `default` or `factory`.z5Must pass either `default` or `factory` but not both.z1`takes_self` is not supported by default_if_none.c �, �� | �| S �j � S r )�factory�r �defaults �r �default_if_none_converterz2default_if_none.<locals>.default_if_none_converterX s �� ���� ��?�?�$� $r c � �� | �| S �S r r r s �r r" z2default_if_none.<locals>.default_if_none_converter` s �� ���� ��Nr )r � TypeErrorr � isinstance� takes_self� ValueError)r! r �msgr" s ` r r r 6 s� �� �$ �'��g�o�8����n� ��g� �'�"5�E����n� ����'�"���'�7�#� � � �E�C� �S�/� !� %� %�$� � %�$r c � � t | t � r| j � } h d�}h d�} | |v ry| |v ry d| � �}t |� �# t $ r Y �w xY w)a Convert "boolean" strings (e.g., from env. vars.) to real booleans. Values mapping to :code:`True`: - :code:`True` - :code:`"true"` / :code:`"t"` - :code:`"yes"` / :code:`"y"` - :code:`"on"` - :code:`"1"` - :code:`1` Values mapping to :code:`False`: - :code:`False` - :code:`"false"` / :code:`"f"` - :code:`"no"` / :code:`"n"` - :code:`"off"` - :code:`"0"` - :code:`0` :raises ValueError: for any other value. .. versionadded:: 21.3.0 > T�1r �y�on�yes�true> F�0�f�n�no�off�falseTFz Cannot convert value to bool: )r% �str�lowerr$ r' )r �truthy�falsyr( s r r r i sm � �4 �#�s���i�i�k�� :�F� ;�E� � �&�=�� �%�<�� � +�3�%� 0�C� �S�/��� � � � �s �A �A � A�A) �__doc__r �_compatr �_maker r r �__all__r r r r r r �<module>r= s7 ��� � )� )� )� �� �@ $�T� 0%�f'r
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