add_persistent_example.py

from chainer import links
from chainer import serializers
import numpy

cls = links.Classifier(links.Linear(10, 10))
cls.add_persistent('k', numpy.random.uniform(-1, 1, (1, 3)))
print cls._persistent # => ['k']                                                                                                                                                                                   
print cls.k # => [[-0.76103399  0.09844306 -0.25231615]]                                                                                                                                                           
serializers.save_hdf5('test.hd5', cls)

cls2 = links.Classifier(links.Linear(10, 10))
cls2.add_persistent('k', numpy.empty((1, 3)))
serializers.load_hdf5('test.hd5', cls2)
print cls2._persistent # => ['k']                                                                                                                                                                                  
print cls2.k # => [[-0.76103399  0.09844306 -0.25231615]]