diff --git a/problems/0001.两数之和.md b/problems/0001.两数之和.md
index 02e9996f..31a808b0 100644
--- a/problems/0001.两数之和.md
+++ b/problems/0001.两数之和.md
@@ -107,7 +107,7 @@ public int[] twoSum(int[] nums, int target) {
 
 Python：
 
-```python3
+```python
 class Solution:
     def twoSum(self, nums: List[int], target: int) -> List[int]:
         hashmap={}
diff --git a/problems/0349.两个数组的交集.md b/problems/0349.两个数组的交集.md
index 090480a4..5c635d39 100644
--- a/problems/0349.两个数组的交集.md
+++ b/problems/0349.两个数组的交集.md
@@ -118,7 +118,7 @@ class Solution {
 ```
 
 Python：
-```python3
+```python
 class Solution:
     def intersection(self, nums1: List[int], nums2: List[int]) -> List[int]:
         result_set = set()
diff --git a/problems/0707.设计链表.md b/problems/0707.设计链表.md
index 2fa1af29..2d096063 100644
--- a/problems/0707.设计链表.md
+++ b/problems/0707.设计链表.md
@@ -239,7 +239,7 @@ class MyLinkedList {
 ```
 
 Python：
-```python3
+```python
 # 单链表
 class Node: