python - I need to understand how __setstate__ can change the value of assigned variable -

this part of code show how code constructed. after calling , initiating network call function setstate update saved parameters iterate , save them in self.params update done inside object layer , variables w , b.

i don't understand how updating self.params update original variables.

    def __getstate__(self):             weights = [p.get_value() p in self.params]             return weights          def __setstate__(self, weights):             = iter(weights)             p in self.params:                 p.set_value(i.next())       def __init__(self, .......):   self.layer8 = lenetconvpoollayer(                 rng,                 input=self.layer7.output,                 image_shape=(.....),                 filter_shape=(....),                 subsample=(..)             )      self.params =  self.layer8.params + self.layer7.params + self.layer6.params      class lenetconvpoollayer(object):      def __init__(self, .......):  self.w = theano.shared(w_values, borrow=true )          self.b = theano.shared(value=b_values, borrow=true)          self.params = [self.w, self.b]