remove tailing : in losses

losses.py

@@ -59,7 +59,7 @@ def margin_loss(y, y_pred, margin):
 
 def multilabel_margin_loss(y, y_pred, margin):
     y_list = tf.unpack(y)
-    y_pred_list = tf.unpack(y):
+    y_pred_list = tf.unpack(y)
     loss = 0.0
     for y_, y_pred_ in zip(y_list, y_pred_list):
         partition = tf.dynamic_partition(y_pred_, y_, 2)