[Bug Fix] handle return value of list type (#216)

Author: hxzd5568

graph_net/paddle/validate.py

@@ -12,6 +12,7 @@
 import graph_net
 import os
 import re
+import paddle
 
 
 def load_class_from_file(file_path: str, class_name: str):
@@ -68,7 +69,12 @@ def main(args):
     y = model(**state_dict)[0]
 
     print(np.argmin(y), np.argmax(y))
-    print(y.shape)
+    if isinstance(y, paddle.Tensor):
+        print(y.shape)
+    elif isinstance(y, list) or isinstance(y, tuple):
+        print(y[0].shape)
+    else:
+        raise ValueError("Illegal Return Value.")
 
     if not args.no_check_redundancy:
         print("Check redundancy ...")