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from netmodel.model.mapper import ObjectSpecification
class Key(ObjectSpecification):
def __init__(self, *attributes):
self._attributes = attributes
#--------------------------------------------------------------------------
# Descriptor protocol
#
# see. https://docs.python.org/3/howto/descriptor.html
#--------------------------------------------------------------------------
def __set_name__(self, owner, name):
self._name = name
self._owner = owner
def __iter__(self):
for attribute in self._attributes:
yield attribute
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