Update 0530.二叉搜索树的最小绝对差.md

added python version of code

problems/0530.二叉搜索树的最小绝对差.md

@@ -177,8 +177,29 @@ class Solution {
 ```
 
 Python：
-
-
+```python
+# Definition for a binary tree node.
+# class TreeNode:
+#     def __init__(self, val=0, left=None, right=None):
+#         self.val = val
+#         self.left = left
+#         self.right = right
+class Solution:
+    def getMinimumDifference(self, root: TreeNode) -> int:
+        res = []   
+        r = float("inf")
+        def buildaList(root):  //把二叉搜索树转换成有序数组
+            if not root: return None
+            if root.left: buildaList(root.left)  //左
+            res.append(root.val)  //中
+            if root.right: buildaList(root.right)  //右
+            return res
+            
+        buildaList(root)
+        for i in range(len(res)-1):  // 统计有序数组的最小差值
+            r = min(abs(res[i]-res[i+1]),r)
+        return r
+```
 Go：
 
 
@@ -188,4 +209,4 @@ Go：
 * 作者微信：[程序员Carl](https://mp.weixin.qq.com/s/b66DFkOp8OOxdZC_xLZxfw)
 * B站视频：[代码随想录](https://space.bilibili.com/525438321)
 * 知识星球：[代码随想录](https://mp.weixin.qq.com/s/QVF6upVMSbgvZy8lHZS3CQ)
-<div align="center"><img src=../pics/公众号.png width=450 alt=> </img></div>
+<div align="center"><img src=../pics/公众号.png width=450 alt=> </img></div>