fix bug

Author: MorvanZhou

contents/9_Deep_Deterministic_Policy_Gradient_DDPG/DDPG_update.py

@@ -59,8 +59,8 @@ def __init__(self, a_dim, s_dim, a_bound,):
         self.ct_params = tf.get_collection(tf.GraphKeys.GLOBAL_VARIABLES, scope='Critic/target')
 
         # target net replacement
-        self.soft_replace = [[tf.assign(ta, (1 - TAU) * ta + TAU * ea), tf.assign(tc, (1 - TAU) * tc + TAU * ec)]
-                             for ta, ea, tc, ec in zip(self.at_params, self.ae_params, self.ct_params, self.ce_params)]
+        self.soft_replace = [tf.assign(t, (1 - TAU) * t + TAU * e)
+                             for t, e in zip(self.at_params + self.ct_params, self.ae_params + self.ce_params)]
 
         q_target = self.R + GAMMA * q_
         # in the feed_dic for the td_error, the self.a should change to actions in memory