add return in print_linked_list

supercoderhawk · supercoderhawk · commit 16793b7e3674 · 2019-08-28T20:52:26.000+08:00
diff --git a/Python/common_utils.py b/Python/common_utils.py
@@ -14,6 +14,7 @@ def print_linked_list(head):
             s += '->'
         node = node.next
     print(s)
+    return s
 
 
 def build_linked_list(arr):
