<SYSTEM_TASK:>
Solve the following problem using Python, implementing the functions described below, one line at a time
<END_TASK>
<USER_TASK:>
Description:
 def learn(self, numEpochs, batchsize):
 """Train the classifier for a given number of epochs, with a given batchsize"""

        for epoch in range(numEpochs):
            print('epoch %d' % epoch)
            indexes = np.random.permutation(self.trainsize)
            for i in range(0, self.trainsize, batchsize):
                x = Variable(self.x_train[indexes[i: i + batchsize]])
                t = Variable(self.y_train[indexes[i: i + batchsize]])
                self.optimizer.update(self.model, x, t)