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� fdd�Z � Z S )r4 r� zEnter a valid URL.c s t � jdddi|�� d S )Nr� TrG )r` ra r� rf rG rg ra � s zURLField.__init__c sh � fdd�}t � �|�}|r2||�}|d sd|d< |d s.|d |d< d|d< |t|��}t|�}|S )Nc s0 zt t| ��W S ty t� jd dd��w )z�
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ValidationError for some malformed URLs.
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r4 c s0 e Zd ZeZ� fdd�Zdd� Zdd� Z� ZS )r5 c s0 t |t�r|�� dv rd}nt|�}t� �|�S )z Return a Python boolean object.)�false�0F)rR r� r� �boolr` rn rj rf rG rg rn � s zBooleanField.to_pythonc C s$ |s| j rt| jd dd��d S d S ro )rE r rL rj rG rG rg rs � s
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A field whose valid values are None, True, and False. Clean invalid values
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hidden field will submit for True and False, for 'true' and 'false',
which are likely to be returned by JavaScript serializations of forms,
and for '1' and '0', which is what a RadioField will submit. Unlike
the Booleanfield, this field must check for True because it doesn't
use the bool() function.
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zNullBooleanField.to_pythonc C � d S ri rG rj rG rG rg rs � rm zNullBooleanField.validateN)r� r� r� �__doc__r rH rn rs rG rG rG rg r6 � s
r6 c @ s e Zd Zdd� Zdd� ZdS )�CallableChoiceIteratorc C s
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zChoiceField._set_choicesc C s || j v rdS t|�S )r� rF )rr r� rj rG rG rg rn * s
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