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��Ze� ZdS )zwPolicy framework for the email package.
Allows fine grained feature control of how the package parses and emits data.
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d� Z� Z S )�_PolicyBasea� Policy Object basic framework.
This class is useless unless subclassed. A subclass should define
class attributes with defaults for any values that are to be
managed by the Policy object. The constructor will then allow
non-default values to be set for these attributes at instance
creation time. The instance will be callable, taking these same
attributes keyword arguments, and returning a new instance
identical to the called instance except for those values changed
by the keyword arguments. Instances may be added, yielding new
instances with any non-default values from the right hand
operand overriding those in the left hand operand. That is,
A + B == A(<non-default values of B>)
The repr of an instance can be used to reconstruct the object
if and only if the repr of the values can be used to reconstruct
those values.
c sH |� � D ]:\}}t| |�r.tt| ��||� qtd�|| jj���qdS )z�Create new Policy, possibly overriding some defaults.
See class docstring for a list of overridable attributes.
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��z_PolicyBase.__init__c C s* dd� | j �� D �}d�| jjd�|��S )Nc S s g | ]\}}d � ||��qS )z{}={!r})r )�.0r r r r r �
<listcomp>8 s �z(_PolicyBase.__repr__.<locals>.<listcomp>z{}({})z, )�__dict__r
r r r �join)r �argsr r r �__repr__7 s �z_PolicyBase.__repr__c K sr | j �| j �}| j�� D ]\}}t�|||� q|�� D ]4\}}t| |�s^td�|| j j ���t�|||� q8|S )z�Return a new instance with specified attributes changed.
The new instance has the same attribute values as the current object,
except for the changes passed in as keyword arguments.
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