From 1d0333f59634bc68b9c4f253f95a2ef8f7a5009e Mon Sep 17 00:00:00 2001
From: Anqi Li <103280095+iqna126@users.noreply.github.com>
Date: Wed, 15 Jan 2025 17:16:40 -0800
Subject: [PATCH 1/2] =?UTF-8?q?=E7=BB=990054.=E6=9B=BF=E6=8D=A2=E6=95=B0?=
 =?UTF-8?q?=E5=AD=97.md=20=E5=8A=A0=E5=85=A5python=E8=A7=A3=E6=B3=95?=
MIME-Version: 1.0
Content-Type: text/plain; charset=UTF-8
Content-Transfer-Encoding: 8bit

---
 problems/kamacoder/0054.替换数字.md | 40 +++++++++++++++++++++++++
 1 file changed, 40 insertions(+)

diff --git a/problems/kamacoder/0054.替换数字.md b/problems/kamacoder/0054.替换数字.md
index de0ab1a3..e4b5c43f 100644
--- a/problems/kamacoder/0054.替换数字.md
+++ b/problems/kamacoder/0054.替换数字.md
@@ -215,6 +215,46 @@ public class Main {
 }
 ```
 
+### Python：
+```python
+class Solution(object):
+    def subsitute_numbers(self, s):
+        """
+        :type s: str
+        :rtype: str
+        """
+        
+        count = sum(1 for char in s if char.isdigit()) # 统计数字的个数
+        expand_len = len(s) + (count * 5)  # 计算扩充后字符串的大小， x->number， 每有一个数字就要增加五个长度
+        res = [''] * expand_len
+        
+        new_index = expand_len - 1 # 指向扩充后字符串末尾
+        old_index = len(s) - 1 # 指向原字符串末尾
+        
+        while old_index >= 0: # 从后往前， 遇到数字替换成“number”
+            if s[old_index].isdigit():
+                res[new_index-5:new_index+1] = "number"
+                new_index -= 6
+            else:
+                res[new_index] = s[old_index]
+                new_index -= 1
+            old_index -= 1
+        
+        return "".join(res)
+        
+if __name__ == "__main__":
+    solution = Solution()
+
+    while True:
+        try:
+            s = input()
+            result = solution.subsitute_numbers(s)
+            print(result)
+        except EOFError:
+            break
+
+```
+
 ### Go：
 ````go
 package main

From 163c3f33d8d24735230b25ddb697d726f0d5c242 Mon Sep 17 00:00:00 2001
From: Anqi Li <103280095+iqna126@users.noreply.github.com>
Date: Thu, 23 Jan 2025 08:16:44 -0800
Subject: [PATCH 2/2] =?UTF-8?q?0054.=E6=9B=BF=E6=8D=A2=E6=95=B0=E5=AD=97.m?=
 =?UTF-8?q?d=20=E5=9C=A8=E8=AE=B2=E8=A7=A3=E4=B8=AD=E5=8A=A0=E5=85=A5?=
 =?UTF-8?q?=E4=BA=86python=20string=E4=B9=9F=E4=B8=8D=E5=8F=AF=E5=8F=98?=
 =?UTF-8?q?=E7=9A=84=E8=A7=A3=E9=87=8A?=
MIME-Version: 1.0
Content-Type: text/plain; charset=UTF-8
Content-Transfer-Encoding: 8bit

---
 problems/kamacoder/0054.替换数字.md | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/problems/kamacoder/0054.替换数字.md b/problems/kamacoder/0054.替换数字.md
index e4b5c43f..f788d65b 100644
--- a/problems/kamacoder/0054.替换数字.md
+++ b/problems/kamacoder/0054.替换数字.md
@@ -21,7 +21,7 @@
 
 ## 思路
 
-如果想把这道题目做到极致，就不要只用额外的辅助空间了！ （不过使用Java刷题的录友，一定要使用辅助空间，因为Java里的string不能修改）
+如果想把这道题目做到极致，就不要只用额外的辅助空间了！ （不过使用Java和Python刷题的录友，一定要使用辅助空间，因为Java和Python里的string不能修改）
 
 首先扩充数组到每个数字字符替换成 "number" 之后的大小。