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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.
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W dS )z�Create new Policy, possibly overriding some defaults.
See class docstring for a list of overridable attributes.
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<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 sz | j j| j �}x$| jj� D ]\}}tj|||� qW x@|j� D ]4\}}t| |�sdtdj|| j j ���tj|||� q>W |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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