Update Lists.py

fairying · web-flow · commit 2e30be1148cc · 2017-11-15T18:12:59.000+08:00
diff --git a/Lists.py b/Lists.py
@@ -62,6 +62,7 @@ def search(self, item):
         return found
 
     def remove(self, item):
+        #1 链表为空   2为头结点  3普通节点
         current = self.head
         previous = None
         found = False
