import tensorflow as tf


            w_initializer, b_initializer = tf.random_normal_initializer(0., 0.1), tf.constant_initializer(0.0)

            # ------------------ build evaluate_net ------------------
            with tf.variable_scope('eval_net'):
                a_fc1 = tf.layers.dense(self.s, 128, tf.nn.relu, kernel_initializer=w_initializer,
                                        bias_initializer=b_initializer, name='agent_fc1_e')
                # a_fc2 = tf.layers.dense(a_fc1, 128, tf.nn.relu, kernel_initializer=w_initializer,
