添加 0203.移除链表元素 python3版本

problems/0203.移除链表元素.md

@@ -208,7 +208,23 @@ public ListNode removeElements(ListNode head, int val) {
 ```
 
 Python：
-
+```python
+# Definition for singly-linked list.
+# class ListNode:
+#     def __init__(self, val=0, next=None):
+#         self.val = val
+#         self.next = next
+class Solution:
+    def removeElements(self, head: ListNode, val: int) -> ListNode:
+        dummy_head = ListNode(next=head) #添加一个虚拟节点
+        cur = dummy_head
+        while(cur.next!=None):
+            if(cur.next.val == val):
+                cur.next = cur.next.next #删除cur.next节点
+            else:
+                cur = cur.next
+        return dummy_head.next
+```
 
 Go：