diff --git a/.gitignore b/.gitignore
index aef8d7436..71851d074 100644
--- a/.gitignore
+++ b/.gitignore
@@ -7,9 +7,6 @@
 hello-algo.iml
 
 # mkdocs files
-site/
 .cache/
 scripts/
 docs/overrides/
-
-src/
diff --git a/codes/python/chapter_hashing/array_hash_map.py b/codes/python/chapter_hashing/array_hash_map.py
index ce8889924..e42c52bbc 100644
--- a/codes/python/chapter_hashing/array_hash_map.py
+++ b/codes/python/chapter_hashing/array_hash_map.py
@@ -6,7 +6,7 @@ Author: msk397 (machangxinq@gmail.com)
 
 """ 键值对 int->String """
 class Entry:
-    def __init__(self, key: int, val: str):
+    def __init__(self, key, val):
         self.key = key
         self.val = val
 
diff --git a/codes/python/chapter_tree/binary_search_tree.py b/codes/python/chapter_tree/binary_search_tree.py
index c3058c93f..3a8dcf269 100644
--- a/codes/python/chapter_tree/binary_search_tree.py
+++ b/codes/python/chapter_tree/binary_search_tree.py
@@ -54,11 +54,9 @@ class BinarySearchTree:
         # 若树为空，直接提前返回
         if root is None:
             return None
-
-        cur = root
-        pre = None
-
+        
         # 循环查找，越过叶结点后跳出
+        cur, pre = root, None
         while cur is not None:
             # 找到重复结点，直接返回
             if cur.val == num:
@@ -86,10 +84,8 @@ class BinarySearchTree:
         if root is None:
             return None
 
-        cur = root
-        pre = None
-
         # 循环查找，越过叶结点后跳出
+        cur, pre = root, None
         while cur is not None:
             # 找到待删除结点，跳出循环
             if cur.val == num:
@@ -99,7 +95,6 @@ class BinarySearchTree:
                 cur = cur.right
             else:  # 待删除结点在 cur 的左子树中
                 cur = cur.left
-
         # 若无待删除结点，则直接返回
         if cur is None:
             return None
diff --git a/deploy.sh b/deploy.sh
deleted file mode 100644
index fb4e574fd..000000000
--- a/deploy.sh
+++ /dev/null
@@ -1,8 +0,0 @@
-rm -rf ./site
-mkdocs build --clean
-cd site
-git init
-git add -A
-git commit -m "deploy"
-git push -f git@github.com:krahets/hello-algo.git main:gh-pages
-cd -
diff --git a/docs/chapter_array_and_linkedlist/array.md b/docs/chapter_array_and_linkedlist/array.md
old mode 100644
new mode 100755
index fa4418ee8..f60c64628
--- a/docs/chapter_array_and_linkedlist/array.md
+++ b/docs/chapter_array_and_linkedlist/array.md
@@ -143,13 +143,7 @@ elementAddr = firtstElementAddr + elementLength * elementIndex
 === "Python"
 
     ```python title="array.py"
-    """ 随机访问元素 """
-    def random_access(nums):
-        # 在区间 [0, len(nums)-1] 中随机抽取一个数字
-        random_index = random.randint(0, len(nums) - 1)
-        # 获取并返回随机元素
-        random_num = nums[random_index]
-        return random_num
+    [class]{}-[func]{random_access}
     ```
 
 === "Go"
@@ -279,17 +273,7 @@ elementAddr = firtstElementAddr + elementLength * elementIndex
 === "Python"
 
     ```python title="array.py"
-    """ 扩展数组长度 """
-    # 请注意，Python 的 list 是动态数组，可以直接扩展
-    # 为了方便学习，本函数将 list 看作是长度不可变的数组
-    def extend(nums, enlarge):
-        # 初始化一个扩展长度后的数组
-        res = [0] * (len(nums) + enlarge)
-        # 将原数组中的所有元素复制到新数组
-        for i in range(len(nums)):
-            res[i] = nums[i]
-        # 返回扩展后的新数组
-        return res
+    [class]{}-[func]{extend}
     ```
 
 === "Go"
@@ -452,19 +436,9 @@ elementAddr = firtstElementAddr + elementLength * elementIndex
 === "Python"
 
     ```python title="array.py"
-    """ 在数组的索引 index 处插入元素 num """
-    def insert(nums, num, index):
-        # 把索引 index 以及之后的所有元素向后移动一位
-        for i in range(len(nums) - 1, index, -1):
-            nums[i] = nums[i - 1]
-        # 将 num 赋给 index 处元素
-        nums[index] = num
+    [class]{}-[func]{insert}
     
-    """ 删除索引 index 处元素 """
-    def remove(nums, index):
-        # 把索引 index 之后的所有元素向前移动一位
-        for i in range(index, len(nums) - 1):
-            nums[i] = nums[i + 1]
+    [class]{}-[func]{remove}
     ```
 
 === "Go"
@@ -648,15 +622,7 @@ elementAddr = firtstElementAddr + elementLength * elementIndex
 === "Python"
 
     ```python title="array.py"
-    """ 遍历数组 """
-    def traverse(nums):
-        count = 0
-        # 通过索引遍历数组
-        for i in range(len(nums)):
-            count += 1
-        # 直接遍历数组
-        for num in nums:
-            count += 1
+    [class]{}-[func]{traverse}
     ```
 
 === "Go"
@@ -803,12 +769,7 @@ elementAddr = firtstElementAddr + elementLength * elementIndex
 === "Python"
 
     ```python title="array.py"
-    """ 在数组中查找指定元素 """
-    def find(nums, target):
-        for i in range(len(nums)):
-            if nums[i] == target:
-                return i
-        return -1
+    [class]{}-[func]{find}
     ```
 
 === "Go"
diff --git a/docs/chapter_array_and_linkedlist/linked_list.md b/docs/chapter_array_and_linkedlist/linked_list.md
old mode 100644
new mode 100755
index 0e17954a5..71d91d73e
--- a/docs/chapter_array_and_linkedlist/linked_list.md
+++ b/docs/chapter_array_and_linkedlist/linked_list.md
@@ -369,20 +369,9 @@ comments: true
 === "Python"
 
     ```python title="linked_list.py"
-    """ 在链表的结点 n0 之后插入结点 P """
-    def insert(n0, P):
-        n1 = n0.next
-        n0.next = P
-        P.next = n1
+    [class]{}-[func]{insert}
 
-    """ 删除链表的结点 n0 之后的首个结点 """
-    def remove(n0):
-        if not n0.next:
-            return
-        # n0 -> P -> n1
-        P = n0.next
-        n1 = P.next
-        n0.next = n1
+    [class]{}-[func]{remove}
     ```
 
 === "Go"
@@ -557,13 +546,7 @@ comments: true
 === "Python"
 
     ```python title="linked_list.py"
-    """ 访问链表中索引为 index 的结点 """
-    def access(head, index):
-        for _ in range(index):
-            if not head:
-                return None
-            head = head.next
-        return head
+    [class]{}-[func]{access}
     ```
 
 === "Go"
@@ -704,15 +687,7 @@ comments: true
 === "Python"
 
     ```python title="linked_list.py"
-    """ 在链表中查找值为 target 的首个结点 """
-    def find(head, target):
-        index = 0
-        while head:
-            if head.val == target:
-                return index
-            head = head.next
-            index += 1
-        return -1
+    [class]{}-[func]{find}
     ```
 
 === "Go"
diff --git a/docs/chapter_array_and_linkedlist/list.md b/docs/chapter_array_and_linkedlist/list.md
old mode 100644
new mode 100755
index b6b413aca..f1c470499
--- a/docs/chapter_array_and_linkedlist/list.md
+++ b/docs/chapter_array_and_linkedlist/list.md
@@ -912,68 +912,7 @@ comments: true
 === "Python"
 
     ```python title="my_list.py"
-    """ 列表类简易实现 """
-    class MyList:
-        """ 构造函数 """
-        def __init__(self):
-            self.__capacity = 10                 # 列表容量
-            self.__nums = [0] * self.__capacity  # 数组（存储列表元素）
-            self.__size = 0                      # 列表长度（即当前元素数量）
-            self.__extend_ratio = 2              # 每次列表扩容的倍数
-    
-        """ 获取列表长度（即当前元素数量） """
-        def size(self):
-            return self.__size
-        
-        """ 获取列表容量 """
-        def capacity(self):
-            return self.__capacity
-        
-        """ 访问元素 """
-        def get(self, index):
-            # 索引如果越界则抛出异常，下同
-            assert index >= 0 and index < self.__size, "索引越界"
-            return self.__nums[index]
-    
-        """ 更新元素 """
-        def set(self, num, index):
-            assert index >= 0 and index < self.__size, "索引越界"
-            self.__nums[index] = num
-    
-        """ 中间插入（尾部添加）元素 """
-        def add(self, num, index=-1):
-            assert index >= 0 and index < self.__size, "索引越界"
-            # 若不指定索引 index ，则向数组尾部添加元素
-            if index == -1:
-                index = self.__size
-            # 元素数量超出容量时，触发扩容机制
-            if self.__size == self.capacity():
-                self.extend_capacity()
-            # 索引 i 以及之后的元素都向后移动一位
-            for j in range(self.__size - 1, index - 1, -1):
-                self.__nums[j + 1] = self.__nums[j]
-            self.__nums[index] = num
-            # 更新元素数量
-            self.__size += 1
-    
-        """ 删除元素 """
-        def remove(self, index):
-            assert index >= 0 and index < self.__size, "索引越界"
-            num = self.nums[index]
-            # 索引 i 之后的元素都向前移动一位
-            for j in range(index, self.__size - 1):
-                self.__nums[j] = self.__nums[j + 1]
-            # 更新元素数量
-            self.__size -= 1
-            # 返回被删除元素
-            return num
-    
-        """ 列表扩容 """
-        def extend_capacity(self):
-            # 新建一个长度为 self.__size 的数组，并将原数组拷贝到新数组
-            self.__nums = self.__nums + [0] * self.capacity() * (self.__extend_ratio - 1)
-            # 更新列表容量
-            self.__capacity = len(self.__nums)
+    [class]{MyList}-[func]{}
     ```
 
 === "Go"
diff --git a/docs/chapter_computational_complexity/space_complexity.md b/docs/chapter_computational_complexity/space_complexity.md
old mode 100644
new mode 100755
index 61a217f6e..8033d2a1e
--- a/docs/chapter_computational_complexity/space_complexity.md
+++ b/docs/chapter_computational_complexity/space_complexity.md
@@ -624,18 +624,7 @@ $$
 === "Python"
 
     ```python title="space_complexity.py"
-    """ 常数阶 """
-    def constant(n):
-        # 常量、变量、对象占用 O(1) 空间
-        a = 0
-        nums = [0] * 10000
-        node = ListNode(0)
-        # 循环中的变量占用 O(1) 空间
-        for _ in range(n):
-            c = 0
-        # 循环中的函数占用 O(1) 空间
-        for _ in range(n):
-            function()
+    [class]{}-[func]{constant}
     ```
 
 === "Go"
@@ -829,14 +818,7 @@ $$
 === "Python"
 
     ```python title="space_complexity.py"
-    """ 线性阶 """
-    def linear(n):
-        # 长度为 n 的列表占用 O(n) 空间
-        nums = [0] * n
-        # 长度为 n 的哈希表占用 O(n) 空间
-        mapp = {}
-        for i in range(n):
-            mapp[i] = str(i)
+    [class]{}-[func]{linear}
     ```
 
 === "Go"
@@ -996,11 +978,7 @@ $$
 === "Python"
 
     ```python title="space_complexity.py"
-    """ 线性阶（递归实现） """
-    def linear_recur(n):
-        print("递归 n =", n)
-        if n == 1: return
-        linear_recur(n - 1)
+    [class]{}-[func]{linear_recur}
     ```
 
 === "Go"
@@ -1127,10 +1105,7 @@ $$
 === "Python"
 
     ```python title="space_complexity.py"
-    """ 平方阶 """
-    def quadratic(n):
-        # 二维列表占用 O(n^2) 空间
-        num_matrix = [[0] * n for _ in range(n)]
+    [class]{}-[func]{quadratic}
     ```
 
 === "Go"
@@ -1272,12 +1247,7 @@ $$
 === "Python"
 
     ```python title="space_complexity.py"
-    """ 平方阶（递归实现） """
-    def quadratic_recur(n):
-        if n <= 0: return 0
-        # 数组 nums 长度为 n, n-1, ..., 2, 1
-        nums = [0] * n
-        return quadratic_recur(n - 1)
+    [class]{}-[func]{quadratic_recur}
     ```
 
 === "Go"
@@ -1400,13 +1370,7 @@ $$
 === "Python"
 
     ```python title="space_complexity.py"
-    """ 指数阶（建立满二叉树） """
-    def build_tree(n):
-        if n == 0: return None
-        root = TreeNode(0)
-        root.left = build_tree(n - 1)
-        root.right = build_tree(n - 1)
-        return root
+    [class]{}-[func]{build_tree}
     ```
 
 === "Go"
diff --git a/docs/chapter_computational_complexity/space_time_tradeoff.md b/docs/chapter_computational_complexity/space_time_tradeoff.md
old mode 100644
new mode 100755
index 84dc1afc7..8b8ee2be6
--- a/docs/chapter_computational_complexity/space_time_tradeoff.md
+++ b/docs/chapter_computational_complexity/space_time_tradeoff.md
@@ -70,14 +70,7 @@ comments: true
 === "Python"
 
     ```python title="leetcode_two_sum.py"
-    class SolutionBruteForce:
-        def twoSum(self, nums: List[int], target: int) -> List[int]:
-            # 两层循环，时间复杂度 O(n^2)
-            for i in range(len(nums) - 1):
-                for j in range(i + 1, len(nums)):
-                    if nums[i] + nums[j] == target:
-                        return i, j
-            return []
+    [class]{SolutionBruteForce}-[func]{}
     ```
 
 === "Go"
@@ -247,16 +240,7 @@ comments: true
 === "Python"
 
     ```python title="leetcode_two_sum.py"
-    class SolutionHashMap:
-        def twoSum(self, nums: List[int], target: int) -> List[int]:
-            # 辅助哈希表，空间复杂度 O(n)
-            dic = {}
-            # 单层循环，时间复杂度 O(n)
-            for i in range(len(nums)):
-                if target - nums[i] in dic:
-                    return dic[target - nums[i]], i
-                dic[nums[i]] = i
-            return []
+    [class]{SolutionHashMap}-[func]{}
     ```
 
 === "Go"
diff --git a/docs/chapter_computational_complexity/time_complexity.md b/docs/chapter_computational_complexity/time_complexity.md
old mode 100644
new mode 100755
index dd8df29b2..4a64327d1
--- a/docs/chapter_computational_complexity/time_complexity.md
+++ b/docs/chapter_computational_complexity/time_complexity.md
@@ -821,13 +821,7 @@ $$
 === "Python"
 
     ```python title="time_complexity.py"
-    """ 常数阶 """
-    def constant(n):
-        count = 0
-        size = 100000
-        for _ in range(size):
-            count += 1
-        return count
+    [class]{}-[func]{constant}
     ```
 
 === "Go"
@@ -958,12 +952,7 @@ $$
 === "Python"
 
     ```python title="time_complexity.py"
-    """ 线性阶 """
-    def linear(n):
-        count = 0
-        for _ in range(n):
-            count += 1
-        return count
+    [class]{}-[func]{linear}
     ```
 
 === "Go"
@@ -1091,13 +1080,7 @@ $$
 === "Python"
 
     ```python title="time_complexity.py"
-    """ 线性阶（遍历数组）"""
-    def array_traversal(nums):
-        count = 0
-        # 循环次数与数组长度成正比
-        for num in nums:
-            count += 1
-        return count
+    [class]{}-[func]{array_traversal}
     ```
 
 === "Go"
@@ -1239,14 +1222,7 @@ $$
 === "Python"
 
     ```python title="time_complexity.py"
-    """ 平方阶 """
-    def quadratic(n):
-        count = 0
-        # 循环次数与数组长度成平方关系
-        for i in range(n):
-            for j in range(n):
-                count += 1
-        return count
+    [class]{}-[func]{quadratic}
     ```
 
 === "Go"
@@ -1425,20 +1401,7 @@ $$
 === "Python"
 
     ```python title="time_complexity.py"
-    """ 平方阶（冒泡排序）"""
-    def bubble_sort(nums):
-        count = 0  # 计数器
-        # 外循环：待排序元素数量为 n-1, n-2, ..., 1
-        for i in range(len(nums) - 1, 0, -1):
-            # 内循环：冒泡操作
-            for j in range(i):
-                if nums[j] > nums[j + 1]:
-                    # 交换 nums[j] 与 nums[j + 1]
-                    tmp = nums[j]
-                    nums[j] = nums[j + 1]
-                    nums[j + 1] = tmp
-                    count += 3  # 元素交换包含 3 个单元操作
-        return count
+    [class]{}-[func]{bubble_sort}
     ```
 
 === "Go"
@@ -1658,16 +1621,7 @@ $$
 === "Python"
 
     ```python title="time_complexity.py"
-    """ 指数阶（循环实现）"""
-    def exponential(n):
-        count, base = 0, 1
-        # cell 每轮一分为二，形成数列 1, 2, 4, 8, ..., 2^(n-1)
-        for _ in range(n):
-            for _ in range(base):
-                count += 1
-            base *= 2
-        # count = 1 + 2 + 4 + 8 + .. + 2^(n-1) = 2^n - 1
-        return count
+    [class]{}-[func]{exponential}
     ```
 
 === "Go"
@@ -1836,10 +1790,7 @@ $$
 === "Python"
 
     ```python title="time_complexity.py"
-    """ 指数阶（递归实现）"""
-    def exp_recur(n):
-        if n == 1: return 1
-        return exp_recur(n - 1) + exp_recur(n - 1) + 1
+    [class]{}-[func]{exp_recur}
     ```
 
 === "Go"
@@ -1957,13 +1908,7 @@ $$
 === "Python"
 
     ```python title="time_complexity.py"
-    """ 对数阶（循环实现）"""
-    def logarithmic(n):
-        count = 0
-        while n > 1:
-            n = n / 2
-            count += 1
-        return count
+    [class]{}-[func]{logarithmic}
     ```
 
 === "Go"
@@ -2099,10 +2044,7 @@ $$
 === "Python"
 
     ```python title="time_complexity.py"
-    """ 对数阶（递归实现）"""
-    def log_recur(n):
-        if n <= 1: return 0
-        return log_recur(n / 2) + 1
+    [class]{}-[func]{log_recur}
     ```
 
 === "Go"
@@ -2220,14 +2162,7 @@ $$
 === "Python"
 
     ```python title="time_complexity.py"
-    """ 线性对数阶 """
-    def linear_log_recur(n):
-        if n <= 1: return 1
-        count = linear_log_recur(n // 2) + \
-                linear_log_recur(n // 2)
-        for _ in range(n):
-            count += 1
-        return count
+    [class]{}-[func]{linear_log_recur}
     ```
 
 === "Go"
@@ -2387,14 +2322,7 @@ $$
 === "Python"
 
     ```python title="time_complexity.py"
-    """ 阶乘阶（递归实现）"""
-    def factorial_recur(n):
-        if n == 0: return 1
-        count = 0
-        # 从 1 个分裂出 n 个
-        for _ in range(n):
-            count += factorial_recur(n - 1)
-        return count
+    [class]{}-[func]{factorial_recur}
     ```
 
 === "Go"
@@ -2587,22 +2515,9 @@ $$
 === "Python"
 
     ```python title="worst_best_time_complexity.py"
-    """ 生成一个数组，元素为: 1, 2, ..., n ，顺序被打乱 """
-    def random_numbers(n):
-        # 生成数组 nums =: 1, 2, 3, ..., n
-        nums = [i for i in range(1, n + 1)]
-        # 随机打乱数组元素
-        random.shuffle(nums)
-        return nums
+    [class]{}-[func]{random_numbers}
 
-    """ 查找数组 nums 中数字 1 所在索引 """
-    def find_one(nums):
-        for i in range(len(nums)):
-            # 当元素 1 在数组头部时，达到最佳时间复杂度 O(1)
-            # 当元素 1 在数组尾部时，达到最差时间复杂度 O(n)
-            if nums[i] == 1:
-                return i
-        return -1
+    [class]{}-[func]{find_one}
     ```
 
 === "Go"
diff --git a/docs/chapter_hashing/hash_map.md b/docs/chapter_hashing/hash_map.md
old mode 100644
new mode 100755
index d1cd1a1c1..8708fb38a
--- a/docs/chapter_hashing/hash_map.md
+++ b/docs/chapter_hashing/hash_map.md
@@ -523,42 +523,9 @@ $$
 === "Python"
 
     ```python title="array_hash_map.py"
-    """ 键值对 int->String """
-    class Entry:
-        def __init__(self, key, val):
-            self.key = key
-            self.val = val
-
-    """ 基于数组简易实现的哈希表 """
-    class ArrayHashMap:
-        def __init__(self):
-            # 初始化一个长度为 100 的桶（数组）
-            self.bucket = [None] * 100
-
-        """ 哈希函数 """
-        def hash_func(self, key):
-            index = key % 100
-            return index
+    [class]{Entry}-[func]{}
 
-        """ 查询操作 """
-        def get(self, key):
-            index = self.hash_func(key)
-            pair = self.bucket[index]
-            if pair is None:
-                return None
-            return pair.val
-
-        """ 添加操作 """
-        def put(self, key, val):
-            pair = Entry(key, val)
-            index = self.hash_func(key)
-            self.bucket[index] = pair
-
-        """ 删除操作 """
-        def remove(self, key):
-            index = self.hash_func(key)
-            # 置为 None ，代表删除
-            self.bucket[index] = None
+    [class]{ArrayHashMap}-[func]{}
     ```
 
 === "Go"
diff --git a/docs/chapter_searching/binary_search.md b/docs/chapter_searching/binary_search.md
old mode 100644
new mode 100755
index 9ac254cec..531d48a28
--- a/docs/chapter_searching/binary_search.md
+++ b/docs/chapter_searching/binary_search.md
@@ -98,19 +98,7 @@ $$
 === "Python"
 
     ```python title="binary_search.py"
-    """ 二分查找（双闭区间） """
-    def binary_search(nums, target):
-        # 初始化双闭区间 [0, n-1] ，即 i, j 分别指向数组首元素、尾元素
-        i, j = 0, len(nums) - 1
-        while i <= j:
-            m = (i + j) // 2        # 计算中点索引 m
-            if nums[m] < target:    # 此情况说明 target 在区间 [m+1, j] 中
-                i = m + 1
-            elif nums[m] > target:  # 此情况说明 target 在区间 [i, m-1] 中
-                j = m - 1
-            else:
-                return m            # 找到目标元素，返回其索引
-        return -1                   # 未找到目标元素，返回 -1
+    [class]{}-[func]{binary_search}
     ```
 
 === "Go"
@@ -291,20 +279,7 @@ $$
 === "Python"
 
     ```python title="binary_search.py"
-    """ 二分查找（左闭右开） """
-    def binary_search1(nums, target):
-        # 初始化左闭右开 [0, n) ，即 i, j 分别指向数组首元素、尾元素+1
-        i, j = 0, len(nums)
-        # 循环，当搜索区间为空时跳出（当 i = j 时为空）
-        while i < j:
-            m = (i + j) // 2        # 计算中点索引 m
-            if nums[m] < target:    # 此情况说明 target 在区间 [m+1, j) 中
-                i = m + 1
-            elif nums[m] > target:  # 此情况说明 target 在区间 [i, m) 中
-                j = m
-            else:                   # 找到目标元素，返回其索引
-                return m
-        return -1                   # 未找到目标元素，返回 -1
+    [class]{}-[func]{binary_search1}
     ```
 
 === "Go"
diff --git a/docs/chapter_searching/hashing_search.md b/docs/chapter_searching/hashing_search.md
old mode 100644
new mode 100755
index 157e67a2e..043106ef0
--- a/docs/chapter_searching/hashing_search.md
+++ b/docs/chapter_searching/hashing_search.md
@@ -43,11 +43,7 @@ comments: true
 === "Python"
 
     ```python title="hashing_search.py"
-    """ 哈希查找（数组） """
-    def hashing_search_array(mapp, target):
-        # 哈希表的 key: 目标元素，value: 索引
-        # 若哈希表中无此 key ，返回 -1
-        return mapp.get(target, -1)
+    [class]{}-[func]{hashing_search_array}
     ```
 
 === "Go"
@@ -153,11 +149,7 @@ comments: true
 === "Python"
 
     ```python title="hashing_search.py"
-    """  哈希查找（链表） """
-    def hashing_search_linkedlist(mapp, target):
-        # 哈希表的 key: 目标元素，value: 结点对象
-        # 若哈希表中无此 key ，返回 -1
-        return mapp.get(target, -1)
+    [class]{}-[func]{hashing_search_linkedlist}
     ```
 
 === "Go"
diff --git a/docs/chapter_searching/linear_search.md b/docs/chapter_searching/linear_search.md
old mode 100644
new mode 100755
index 5a8bb05fa..1a6e62722
--- a/docs/chapter_searching/linear_search.md
+++ b/docs/chapter_searching/linear_search.md
@@ -47,13 +47,7 @@ comments: true
 === "Python"
 
     ```python title="linear_search.py"
-    """ 线性查找（数组） """
-    def linear_search_array(nums, target):
-        # 遍历数组
-        for i in range(len(nums)):
-            if nums[i] == target:  # 找到目标元素，返回其索引
-                return i
-        return -1                  # 未找到目标元素，返回 -1
+    [class]{}-[func]{linear_search_array}
     ```
 
 === "Go"
@@ -195,14 +189,7 @@ comments: true
 === "Python"
 
     ```python title="linear_search.py"
-    """ 线性查找（链表） """
-    def linear_search_linkedlist(head, target):
-        # 遍历链表
-        while head:
-            if head.val == target: # 找到目标结点，返回之
-                return head
-            head = head.next
-        return None                # 未找到目标结点，返回 None
+    [class]{}-[func]{linear_search_linkedlist}
     ```
 
 === "Go"
diff --git a/docs/chapter_sorting/bubble_sort.md b/docs/chapter_sorting/bubble_sort.md
old mode 100644
new mode 100755
index c9063d754..0337ac432
--- a/docs/chapter_sorting/bubble_sort.md
+++ b/docs/chapter_sorting/bubble_sort.md
@@ -15,31 +15,24 @@ comments: true
 完成此次冒泡操作后，**数组最大元素已在正确位置，接下来只需排序剩余 $n - 1$ 个元素**。
 
 === "Step 1"
-
     ![bubble_operation_step1](bubble_sort.assets/bubble_operation_step1.png)
 
 === "Step 2"
-
     ![bubble_operation_step2](bubble_sort.assets/bubble_operation_step2.png)
 
 === "Step 3"
-
     ![bubble_operation_step3](bubble_sort.assets/bubble_operation_step3.png)
 
 === "Step 4"
-
     ![bubble_operation_step4](bubble_sort.assets/bubble_operation_step4.png)
 
 === "Step 5"
-
     ![bubble_operation_step5](bubble_sort.assets/bubble_operation_step5.png)
 
 === "Step 6"
-
     ![bubble_operation_step6](bubble_sort.assets/bubble_operation_step6.png)
 
 === "Step 7"
-
     ![bubble_operation_step7](bubble_sort.assets/bubble_operation_step7.png)
 
 <p align="center"> Fig. 冒泡操作 </p>
@@ -96,16 +89,7 @@ comments: true
 === "Python"
 
     ```python title="bubble_sort.py"
-    """ 冒泡排序 """
-    def bubble_sort(nums):
-        n = len(nums)
-        # 外循环：待排序元素数量为 n-1, n-2, ..., 1
-        for i in range(n - 1, 0, -1):
-            # 内循环：冒泡操作
-            for j in range(i):
-                if nums[j] > nums[j + 1]:
-                    # 交换 nums[j] 与 nums[j + 1]
-                    nums[j], nums[j + 1] = nums[j + 1], nums[j]
+    [class]{}-[func]{bubble_sort}
     ```
 
 === "Go"
@@ -304,20 +288,7 @@ comments: true
 === "Python"
 
     ```python title="bubble_sort.py"
-    """ 冒泡排序（标志优化） """
-    def bubble_sort_with_flag(nums):
-        n = len(nums)
-        # 外循环：待排序元素数量为 n-1, n-2, ..., 1
-        for i in range(n - 1, 0, -1):
-            flag = False  # 初始化标志位
-            # 内循环：冒泡操作
-            for j in range(i):
-                if nums[j] > nums[j + 1]:
-                    # 交换 nums[j] 与 nums[j + 1]
-                    nums[j], nums[j + 1] = nums[j + 1], nums[j]
-                    flag = True  # 记录交换元素
-            if not flag:
-                break            # 此轮冒泡未交换任何元素，直接跳出
+    [class]{}-[func]{bubble_sort_with_flag}
     ```
 
 === "Go"
diff --git a/docs/chapter_sorting/insertion_sort.md b/docs/chapter_sorting/insertion_sort.md
old mode 100644
new mode 100755
index 0c3cee929..130d2c7cf
--- a/docs/chapter_sorting/insertion_sort.md
+++ b/docs/chapter_sorting/insertion_sort.md
@@ -63,17 +63,7 @@ comments: true
 === "Python"
 
     ```python title="insertion_sort.py"
-    """ 插入排序 """
-    def insertion_sort(nums):
-        # 外循环：base = nums[1], nums[2], ..., nums[n-1]
-        for i in range(1, len(nums)):
-            base = nums[i]
-            j = i - 1
-            # 内循环：将 base 插入到左边的正确位置
-            while j >= 0 and nums[j] > base:
-                nums[j + 1] = nums[j]  # 1. 将 nums[j] 向右移动一位
-                j -= 1
-            nums[j + 1] = base         # 2. 将 base 赋值到正确位置
+    [class]{}-[func]{insertion_sort}
     ```
 
 === "Go"
diff --git a/docs/chapter_sorting/merge_sort.md b/docs/chapter_sorting/merge_sort.md
old mode 100644
new mode 100755
index 969bd65ca..7e11a6b22
--- a/docs/chapter_sorting/merge_sort.md
+++ b/docs/chapter_sorting/merge_sort.md
@@ -150,46 +150,9 @@ comments: true
 === "Python"
 
     ```python title="merge_sort.py"
-    """
-    合并左子数组和右子数组
-    左子数组区间 [left, mid]
-    右子数组区间 [mid + 1, right]
-    """
-    def merge(nums, left, mid, right):
-        # 初始化辅助数组 借助 copy模块
-        tmp = nums[left:right + 1]
-        # 左子数组的起始索引和结束索引
-        left_start, left_end = left - left, mid - left
-        # 右子数组的起始索引和结束索引
-        right_start, right_end = mid + 1 - left, right - left
-        # i, j 分别指向左子数组、右子数组的首元素
-        i, j = left_start, right_start
-        # 通过覆盖原数组 nums 来合并左子数组和右子数组
-        for k in range(left, right + 1):
-            # 若“左子数组已全部合并完”，则选取右子数组元素，并且 j++
-            if i > left_end:
-                nums[k] = tmp[j]
-                j += 1
-            # 否则，若“右子数组已全部合并完”或“左子数组元素 <= 右子数组元素”，则选取左子数组元素，并且 i++
-            elif j > right_end or tmp[i] <= tmp[j]:
-                nums[k] = tmp[i]
-                i += 1
-            # 否则，若“左右子数组都未全部合并完”且“左子数组元素 > 右子数组元素”，则选取右子数组元素，并且 j++
-            else:
-                nums[k] = tmp[j]
-                j += 1
+    [class]{}-[func]{merge}
 
-    """ 归并排序 """
-    def merge_sort(nums, left, right):
-        # 终止条件
-        if left >= right:
-            return                        # 当子数组长度为 1 时终止递归
-        # 划分阶段
-        mid = (left + right) // 2         # 计算中点
-        merge_sort(nums, left, mid)       # 递归左子数组
-        merge_sort(nums, mid + 1, right)  # 递归右子数组
-        # 合并阶段
-        merge(nums, left, mid, right)
+    [class]{}-[func]{merge_sort}
     ```
 
 === "Go"
diff --git a/docs/chapter_sorting/quick_sort.md b/docs/chapter_sorting/quick_sort.md
old mode 100644
new mode 100755
index 63a876271..e8a97384e
--- a/docs/chapter_sorting/quick_sort.md
+++ b/docs/chapter_sorting/quick_sort.md
@@ -98,20 +98,7 @@ comments: true
 === "Python"
 
     ```python title="quick_sort.py"
-    """ 哨兵划分 """
-    def partition(self, nums, left, right):
-        # 以 nums[left] 作为基准数
-        i, j = left, right
-        while i < j:
-            while i < j and nums[j] >= nums[left]:
-                j -= 1  # 从右向左找首个小于基准数的元素
-            while i < j and nums[i] <= nums[left]:
-                i += 1  # 从左向右找首个大于基准数的元素
-            # 元素交换
-            nums[i], nums[j] = nums[j], nums[i]
-        # 将基准数交换至两子数组的分界线
-        nums[i], nums[left] = nums[left], nums[i]
-        return i  # 返回基准数的索引
+    [class]{QuickSort}-[func]{partition}
     ```
 
 === "Go"
@@ -316,16 +303,7 @@ comments: true
 === "Python"
 
     ```python title="quick_sort.py"
-    """ 快速排序 """
-    def quick_sort(self, nums, left, right):
-        # 子数组长度为 1 时终止递归
-        if left >= right:
-            return
-        # 哨兵划分
-        pivot = self.partition(nums, left, right)
-        # 递归左子数组、右子数组
-        self.quick_sort(nums, left, pivot - 1)
-        self.quick_sort(nums, pivot + 1, right)
+    [class]{QuickSort}-[func]{quick_sort}
     ```
 
 === "Go"
@@ -509,24 +487,9 @@ comments: true
 === "Python"
 
     ```python title="quick_sort.py"
-    """ 选取三个元素的中位数 """
-    def median_three(self, nums, left, mid, right):
-        # 使用了异或操作来简化代码
-        # 异或规则为 0 ^ 0 = 1 ^ 1 = 0, 0 ^ 1 = 1 ^ 0 = 1
-        if (nums[left] < nums[mid]) ^ (nums[left] < nums[right]):
-            return left
-        elif (nums[mid] < nums[left]) ^ (nums[mid] > nums[right]):
-            return mid
-        return right
+    [class]{QuickSortMedian}-[func]{median_three}
 
-    """ 哨兵划分（三数取中值） """
-    def partition(self, nums, left, right):
-        # 以 nums[left] 作为基准数
-        med = self.median_three(nums, left, (left + right) // 2, right)
-        # 将中位数交换至数组最左端
-        nums[left], nums[med] = nums[med], nums[left]
-        # 以 nums[left] 作为基准数
-        # 下同省略...
+    [class]{QuickSortMedian}-[func]{partition}
     ```
 
 === "Go"
@@ -721,19 +684,7 @@ comments: true
 === "Python"
 
     ```python title="quick_sort.py"
-    """ 快速排序（尾递归优化） """
-    def quick_sort(self, nums, left, right):
-        # 子数组长度为 1 时终止
-        while left < right:
-            # 哨兵划分操作
-            pivot = self.partition(nums, left, right)
-            # 对两个子数组中较短的那个执行快排
-            if pivot - left < right - pivot:
-                self.quick_sort(nums, left, pivot - 1)  # 递归排序左子数组
-                left = pivot + 1     # 剩余待排序区间为 [pivot + 1, right]
-            else:
-                self.quick_sort(nums, pivot + 1, right)  # 递归排序右子数组
-                right = pivot - 1    # 剩余待排序区间为 [left, pivot - 1]
+    [class]{QuickSortTailCall}-[func]{quick_sort}
     ```
 
 === "Go"
diff --git a/docs/chapter_stack_and_queue/queue.md b/docs/chapter_stack_and_queue/queue.md
old mode 100644
new mode 100755
index 6eb6121e2..ae4825e83
--- a/docs/chapter_stack_and_queue/queue.md
+++ b/docs/chapter_stack_and_queue/queue.md
@@ -398,49 +398,7 @@ comments: true
 === "Python"
 
     ```python title="linkedlist_queue.py"
-    """ 基于链表实现的队列 """
-    class LinkedListQueue:
-        def __init__(self):
-            self.__front = None  # 头结点 front
-            self.__rear = None   # 尾结点 rear
-            self.__size = 0
-    
-        """ 获取队列的长度 """
-        def size(self):
-            return self.__size
-    
-        """ 判断队列是否为空 """
-        def is_empty(self):
-            return not self.__front
-    
-        """ 入队 """
-        def push(self, num):
-            # 尾结点后添加 num
-            node = ListNode(num)
-            # 如果队列为空，则令头、尾结点都指向该结点
-            if self.__front is None:
-                self.__front = node
-                self.__rear = node
-            # 如果队列不为空，则将该结点添加到尾结点后
-            else:
-                self.__rear.next = node
-                self.__rear = node
-            self.__size += 1
-    
-        """ 出队 """
-        def poll(self):
-            num = self.peek()
-            # 删除头结点
-            self.__front = self.__front.next
-            self.__size -= 1
-            return num
-    
-        """ 访问队首元素 """
-        def peek(self):
-            if self.size() == 0:
-                print("队列为空")
-                return False
-            return self.__front.val
+    [class]{LinkedListQueue}-[func]{}
     ```
 
 === "Go"
@@ -881,47 +839,7 @@ comments: true
 === "Python"
 
     ```python title="array_queue.py"
-    """ 基于环形数组实现的队列 """
-    class ArrayQueue:
-        def __init__(self, size):
-            self.__nums = [0] * size  # 用于存储队列元素的数组
-            self.__front = 0          # 队首指针，指向队首元素
-            self.__size = 0           # 队列长度
-
-        """ 获取队列的容量 """
-        def capacity(self):
-            return len(self.__nums)
-
-        """ 获取队列的长度 """
-        def size(self):
-            return self.__size
-
-        """ 判断队列是否为空 """
-        def is_empty(self):
-            return self.__size == 0
-
-        """ 入队 """
-        def push(self, num):
-            assert self.__size < self.capacity(), "队列已满"
-            # 计算尾指针，指向队尾索引 + 1
-            # 通过取余操作，实现 rear 越过数组尾部后回到头部
-            rear = (self.__front + self.__size) % self.capacity()
-            # 尾结点后添加 num
-            self.__nums[rear] = num
-            self.__size += 1
-
-        """ 出队 """
-        def poll(self):
-            num = self.peek()
-            # 队首指针向后移动一位，若越过尾部则返回到数组头部
-            self.__front = (self.__front + 1) % self.capacity()
-            self.__size -= 1
-            return num
-
-        """ 访问队首元素 """
-        def peek(self):
-            assert not self.is_empty(), "队列为空"
-            return self.__nums[self.__front]
+    [class]{ArrayQueue}-[func]{}
     ```
 
 === "Go"
diff --git a/docs/chapter_stack_and_queue/stack.md b/docs/chapter_stack_and_queue/stack.md
old mode 100644
new mode 100755
index c97af130e..38408fcfc
--- a/docs/chapter_stack_and_queue/stack.md
+++ b/docs/chapter_stack_and_queue/stack.md
@@ -378,39 +378,7 @@ comments: true
 === "Python"
 
     ```python title="linkedlist_stack.py"
-    """ 基于链表实现的栈 """
-    class LinkedListStack:
-        def __init__(self):
-            self.__peek = None
-            self.__size = 0
-    
-        """ 获取栈的长度 """
-        def size(self):
-            return self.__size
-    
-        """ 判断栈是否为空 """
-        def is_empty(self):
-            return not self.__peek
-    
-        """ 入栈 """
-        def push(self, val):
-            node = ListNode(val)
-            node.next = self.__peek
-            self.__peek = node
-            self.__size += 1
-    
-        """ 出栈 """
-        def pop(self):
-            num = self.peek()
-            self.__peek = self.__peek.next
-            self.__size -= 1
-            return num
-    
-        """ 访问栈顶元素 """
-        def peek(self):
-            # 判空处理
-            if not self.__peek: return None
-            return self.__peek.val
+    [class]{LinkedListStack}-[func]{}
     ```
 
 === "Go"
@@ -785,32 +753,7 @@ comments: true
 === "Python"
 
     ```python title="array_stack.py"
-    """ 基于数组实现的栈 """
-    class ArrayStack:
-        def __init__(self):
-            self.__stack = []
-    
-        """ 获取栈的长度 """
-        def size(self):
-            return len(self.__stack)
-    
-        """ 判断栈是否为空 """
-        def is_empty(self):
-            return self.__stack == []
-    
-        """ 入栈 """
-        def push(self, item):
-            self.__stack.append(item)
-    
-        """ 出栈 """
-        def pop(self):
-            assert not self.is_empty(), "栈为空"
-            return self.__stack.pop()
-    
-        """ 访问栈顶元素 """
-        def peek(self):
-            assert not self.is_empty(), "栈为空"
-            return self.__stack[-1]
+    [class]{ArrayStack}-[func]{}
     ```
 
 === "Go"
diff --git a/docs/chapter_tree/avl_tree.md b/docs/chapter_tree/avl_tree.md
old mode 100644
new mode 100755
index b1b2adb52..39cc374a6
--- a/docs/chapter_tree/avl_tree.md
+++ b/docs/chapter_tree/avl_tree.md
@@ -179,17 +179,9 @@ G. M. Adelson-Velsky 和 E. M. Landis 在其 1962 年发表的论文 "An algorit
 === "Python"
 
     ```python title="avl_tree.py"
-    """ 获取结点高度 """
-    def height(self, node: Optional[TreeNode]) -> int:
-        # 空结点高度为 -1 ，叶结点高度为 0
-        if node is not None:
-            return node.height
-        return -1
+    [class]{AVLTree}-[func]{height}
 
-    """ 更新结点高度 """
-    def __update_height(self, node: Optional[TreeNode]):
-        # 结点高度等于最高子树高度 + 1
-        node.height = max([self.height(node.left), self.height(node.right)]) + 1
+    [class]{AVLTree}-[func]{__update_height}
     ```
 
 === "Go"
@@ -316,13 +308,7 @@ G. M. Adelson-Velsky 和 E. M. Landis 在其 1962 年发表的论文 "An algorit
 === "Python"
 
     ```python title="avl_tree.py"
-    """ 获取平衡因子 """
-    def balance_factor(self, node: Optional[TreeNode]) -> int:
-        # 空结点平衡因子为 0
-        if node is None:
-            return 0
-        # 结点平衡因子 = 左子树高度 - 右子树高度
-        return self.height(node.left) - self.height(node.right)
+    [class]{AVLTree}-[func]{balance_factor}
     ```
 
 === "Go"
@@ -467,18 +453,7 @@ AVL 树的独特之处在于「旋转 Rotation」的操作，其可 **在不影
 === "Python"
 
     ```python title="avl_tree.py"
-    """ 右旋操作 """
-    def __right_rotate(self, node: Optional[TreeNode]) -> TreeNode:
-        child = node.left
-        grand_child = child.right
-        # 以 child 为原点，将 node 向右旋转
-        child.right = node
-        node.left = grand_child
-        # 更新结点高度
-        self.__update_height(node)
-        self.__update_height(child)
-        # 返回旋转后子树的根节点
-        return child
+    [class]{AVLTree}-[func]{__right_rotate}
     ```
 
 === "Go"
@@ -623,18 +598,7 @@ AVL 树的独特之处在于「旋转 Rotation」的操作，其可 **在不影
 === "Python"
 
     ```python title="avl_tree.py"
-    """ 左旋操作 """
-    def __left_rotate(self, node: Optional[TreeNode]) -> TreeNode:
-        child = node.right
-        grand_child = child.left
-        # 以 child 为原点，将 node 向左旋转
-        child.left = node
-        node.right = grand_child
-        # 更新结点高度
-        self.__update_height(node)
-        self.__update_height(child)
-        # 返回旋转后子树的根节点
-        return child
+    [class]{AVLTree}-[func]{__left_rotate}
     ```
 
 === "Go"
@@ -835,30 +799,7 @@ AVL 树的独特之处在于「旋转 Rotation」的操作，其可 **在不影
 === "Python"
 
     ```python title="avl_tree.py"
-    """ 执行旋转操作，使该子树重新恢复平衡 """
-    def __rotate(self, node: Optional[TreeNode]) -> TreeNode:
-        # 获取结点 node 的平衡因子
-        balance_factor = self.balance_factor(node)
-        # 左偏树
-        if balance_factor > 1:
-            if self.balance_factor(node.left) >= 0:
-                # 右旋
-                return self.__right_rotate(node)
-            else:
-                # 先左旋后右旋
-                node.left = self.__left_rotate(node.left)
-                return self.__right_rotate(node)
-        # 右偏树
-        elif balance_factor < -1:
-            if self.balance_factor(node.right) <= 0:
-                # 左旋
-                return self.__left_rotate(node)
-            else:
-                # 先右旋后左旋
-                node.right = self.__right_rotate(node.right)
-                return self.__left_rotate(node)
-        # 平衡树，无需旋转，直接返回
-        return node
+    [class]{AVLTree}-[func]{__rotate}
     ```
 
 === "Go"
@@ -1088,27 +1029,9 @@ AVL 树的独特之处在于「旋转 Rotation」的操作，其可 **在不影
 === "Python"
 
     ```python title="avl_tree.py"
-    """ 插入结点 """
-    def insert(self, val) -> TreeNode:
-        self.root = self.__insert_helper(self.root, val)
-        return self.root
-
-    """ 递归插入结点（辅助函数）"""
-    def __insert_helper(self, node: Optional[TreeNode], val: int) -> TreeNode:
-        if node is None:
-            return TreeNode(val)
-        # 1. 查找插入位置，并插入结点
-        if val < node.val:
-            node.left = self.__insert_helper(node.left, val)
-        elif val > node.val:
-            node.right = self.__insert_helper(node.right, val)
-        else:
-            # 重复结点不插入，直接返回
-            return node
-        # 更新结点高度
-        self.__update_height(node)
-        # 2. 执行旋转操作，使该子树重新恢复平衡
-        return self.__rotate(node)
+    [class]{AVLTree}-[func]{insert}
+
+    [class]{AVLTree}-[func]{__insert_helper}
     ```
 
 === "Go"
@@ -1340,37 +1263,9 @@ AVL 树的独特之处在于「旋转 Rotation」的操作，其可 **在不影
 === "Python"
 
     ```python title="avl_tree.py"
-    """ 删除结点 """
-    def remove(self, val: int):
-        root = self.__remove_helper(self.root, val)
-        return root
+    [class]{AVLTree}-[func]{remove}
 
-    """ 递归删除结点（辅助函数） """
-    def __remove_helper(self, node: Optional[TreeNode], val: int) -> Optional[TreeNode]:
-        if node is None:
-            return None
-        # 1. 查找结点，并删除之
-        if val < node.val:
-            node.left = self.__remove_helper(node.left, val)
-        elif val > node.val:
-            node.right = self.__remove_helper(node.right, val)
-        else:
-            if node.left is None or node.right is None:
-                child = node.left or node.right
-                # 子结点数量 = 0 ，直接删除 node 并返回
-                if child is None:
-                    return None
-                # 子结点数量 = 1 ，直接删除 node
-                else:
-                    node = child
-            else:  # 子结点数量 = 2 ，则将中序遍历的下个结点删除，并用该结点替换当前结点
-                temp = self.__get_inorder_next(node.right)
-                node.right = self.__remove_helper(node.right, temp.val)
-                node.val = temp.val
-        # 更新结点高度
-        self.__update_height(node)
-        # 2. 执行旋转操作，使该子树重新恢复平衡
-        return self.__rotate(node)
+    [class]{AVLTree}-[func]{__remove_helper}
     ```
 
 === "Go"
diff --git a/docs/chapter_tree/binary_search_tree.md b/docs/chapter_tree/binary_search_tree.md
old mode 100644
new mode 100755
index b9f41bd7f..15e1052fb
--- a/docs/chapter_tree/binary_search_tree.md
+++ b/docs/chapter_tree/binary_search_tree.md
@@ -78,21 +78,7 @@ comments: true
 === "Python"
 
     ```python title="binary_search_tree.py"
-    """ 查找结点 """
-    def search(self, num: int) -> Optional[TreeNode]:
-        cur = self.root
-        # 循环查找，越过叶结点后跳出
-        while cur is not None:
-            # 目标结点在 cur 的右子树中
-            if cur.val < num:
-                cur = cur.right
-            # 目标结点在 cur 的左子树中
-            elif cur.val > num:
-                cur = cur.left
-            # 找到目标结点，跳出循环
-            else:
-                break
-        return cur
+    [class]{BinarySearchTree}-[func]{search}
     ```
 
 === "Go"
@@ -286,36 +272,7 @@ comments: true
 === "Python"
 
     ```python title="binary_search_tree.py"
-    """ 插入结点 """
-    def insert(self, num: int) -> Optional[TreeNode]:
-        root = self.root
-        # 若树为空，直接提前返回
-        if root is None:
-            return None
-    
-        cur = root
-        pre = None
-    
-        # 循环查找，越过叶结点后跳出
-        while cur is not None:
-            # 找到重复结点，直接返回
-            if cur.val == num:
-                return None
-            pre = cur
-            # 插入位置在 cur 的右子树中
-            if cur.val < num:
-                cur = cur.right
-            # 插入位置在 cur 的左子树中
-            else:
-                cur = cur.left
-    
-        # 插入结点 val
-        node = TreeNode(num)
-        if pre.val < num:
-            pre.right = node
-        else:
-            pre.left = node
-        return node
+    [class]{BinarySearchTree}-[func]{insert}
     ```
 
 === "Go"
@@ -640,59 +597,9 @@ comments: true
 === "Python"
 
     ```python title="binary_search_tree.py"
-    """ 删除结点 """
-    def remove(self, num: int) -> Optional[TreeNode]:
-        root = self.root
-        # 若树为空，直接提前返回
-        if root is None:
-            return None
-    
-        cur = root
-        pre = None
-    
-        # 循环查找，越过叶结点后跳出
-        while cur is not None:
-            # 找到待删除结点，跳出循环
-            if cur.val == num:
-                break
-            pre = cur
-            if cur.val < num:  # 待删除结点在 cur 的右子树中
-                cur = cur.right
-            else:  # 待删除结点在 cur 的左子树中
-                cur = cur.left
-    
-        # 若无待删除结点，则直接返回
-        if cur is None:
-            return None
-    
-        # 子结点数量 = 0 or 1
-        if cur.left is None or cur.right is None:
-            # 当子结点数量 = 0 / 1 时， child = null / 该子结点
-            child = cur.left or cur.right
-            # 删除结点 cur
-            if pre.left == cur:
-                pre.left = child
-            else:
-                pre.right = child
-        # 子结点数量 = 2
-        else:
-            # 获取中序遍历中 cur 的下一个结点
-            nex = self.get_inorder_next(cur.right)
-            tmp = nex.val
-            # 递归删除结点 nex
-            self.remove(nex.val)
-            # 将 nex 的值复制给 cur
-            cur.val = tmp
-        return cur
+    [class]{BinarySearchTree}-[func]{remove}
 
-    """ 获取中序遍历中的下一个结点（仅适用于 root 有左子结点的情况） """
-    def get_inorder_next(self, root: Optional[TreeNode]) -> Optional[TreeNode]:
-        if root is None:
-            return root
-        # 循环访问左子结点，直到叶结点时为最小结点，跳出
-        while root.left is not None:
-            root = root.left
-        return root
+    [class]{BinarySearchTree}-[func]{get_inorder_next}
     ```
 
 === "Go"
diff --git a/docs/chapter_tree/binary_tree_traversal.md b/docs/chapter_tree/binary_tree_traversal.md
old mode 100644
new mode 100755
index 197cb0bb5..7714b3904
--- a/docs/chapter_tree/binary_tree_traversal.md
+++ b/docs/chapter_tree/binary_tree_traversal.md
@@ -65,21 +65,7 @@ comments: true
 === "Python"
 
     ```python title="binary_tree_bfs.py"
-    """ 层序遍历 """
-    def hier_order(root: Optional[TreeNode]):
-        # 初始化队列，加入根结点
-        queue = collections.deque()
-        queue.append(root)
-        # 初始化一个列表，用于保存遍历序列
-        res = []
-        while queue:
-            node = queue.popleft()       # 队列出队
-            res.append(node.val)         # 保存节点值
-            if node.left is not None:
-                queue.append(node.left)  # 左子结点入队
-            if node.right is not None:
-                queue.append(node.right) # 右子结点入队
-        return res
+    [class]{}-[func]{hier_order}
     ```
 
 === "Go"
@@ -299,32 +285,11 @@ comments: true
 === "Python"
 
     ```python title="binary_tree_dfs.py"
-    """ 前序遍历 """
-    def pre_order(root: Optional[TreeNode]):
-        if root is None:
-            return
-        # 访问优先级：根结点 -> 左子树 -> 右子树
-        res.append(root.val)
-        pre_order(root=root.left)
-        pre_order(root=root.right)
-
-    """ 中序遍历 """
-    def in_order(root: Optional[TreeNode]):
-        if root is None:
-            return
-        # 访问优先级：左子树 -> 根结点 -> 右子树
-        in_order(root=root.left)
-        res.append(root.val)
-        in_order(root=root.right)
-
-    """ 后序遍历 """
-    def post_order(root: Optional[TreeNode]):
-        if root is None:
-            return
-        # 访问优先级：左子树 -> 右子树 -> 根结点
-        post_order(root=root.left)
-        post_order(root=root.right)
-        res.append(root.val)
+    [class]{}-[func]{pre_order}
+
+    [class]{}-[func]{in_order}
+
+    [class]{}-[func]{post_order}
     ```
 
 === "Go"
diff --git a/docs/utils/.gitignore b/docs/utils/.gitignore
new file mode 100644
index 000000000..ed8ebf583
--- /dev/null
+++ b/docs/utils/.gitignore
@@ -0,0 +1 @@
+__pycache__
\ No newline at end of file
diff --git a/docs/utils/build_markdown.py b/docs/utils/build_markdown.py
new file mode 100755
index 000000000..6b119b29e
--- /dev/null
+++ b/docs/utils/build_markdown.py
@@ -0,0 +1,87 @@
+"""
+File: build_markdown_docs.py
+Created Time: 2023-02-06
+Author: Krahets (krahets@163.com)
+"""
+
+import sys, os.path as osp
+sys.path.append(osp.dirname(osp.dirname(osp.dirname(osp.abspath(__file__)))))
+
+import re
+import glob
+import shutil
+from docs.utils.extract_code_python import ExtractCodeBlocksPython
+
+def build_markdown(md_path):
+    with open(md_path, "r") as f:
+        lines = f.readlines()
+    
+    code_blocks_dict = {}
+    file_pattern = re.compile(r'\s*```(\w+)\s+title="(.+)"')
+    src_pattern = re.compile(r'\s*\[class\]\{(.*?)\}-\[func\]\{(.*?)\}')
+    for i in range(len(lines)):
+        # Find the line target to the source codes
+        src_match = src_pattern.match(lines[i])
+        if src_match is None:
+            continue
+        for j in range(i - 1, -1 ,-1):
+            file_match = file_pattern.match(lines[j])
+            if file_match is not None:
+                break
+        
+        # Get code blocks
+        lang = file_match[1]
+        file_name = file_match[2]
+        if file_name not in code_blocks_dict:
+            code_blocks_dict[file_name] = ExtractCodeBlocksPython(
+                file_path=osp.dirname(md_path).replace("docs/", f"codes/{lang}/") + f"/{file_name}")
+
+        header_line = i
+        class_label =  src_match[1]
+        func_label = src_match[2]
+        code_blocks = code_blocks_dict[file_name]
+        src_info = {
+            "line_number": i,
+            "class_label": src_match[1],
+            "func_label": src_match[2],
+            "code_blocks": code_blocks_dict[file_name]
+        }
+
+        # Add the class to the doc
+        if not func_label and class_label:
+            if class_label in code_blocks.classes:
+                lines.pop(header_line)
+                class_block = code_blocks.classes[class_label]["block"]
+                for code_line in class_block[::-1]:
+                    ind = " " * 4 if code_line != "\n" else ""
+                    lines.insert(header_line, ind + code_line)
+        # Add the function to the doc
+        elif func_label and not class_label:
+            if func_label in code_blocks.functions:
+                lines.pop(header_line)
+                func_block = code_blocks.functions[func_label]
+                for code_line in func_block["block"][::-1]:
+                    ind = " " * 4 if code_line != "\n" else ""
+                    lines.insert(header_line, ind + code_line)
+        # Add the class method to the doc
+        elif func_label and class_label:
+            if class_label in code_blocks.classes:
+                class_dict = code_blocks.classes[class_label]
+                if func_label in class_dict["functions"]:
+                    lines.pop(header_line)
+                    func_block = class_dict["functions"][func_label]
+                    for code_line in func_block["block"][::-1]:
+                        lines.insert(header_line, code_line)
+                    
+    with open(md_path.replace("docs/", "build/"), "w") as f:
+        f.writelines(lines)
+        print(f"Built {md_path}")
+
+
+if __name__ == "__main__":
+    # Copy files to the build dir
+    shutil.copytree("docs", "build", dirs_exist_ok=True)
+    shutil.rmtree("build/utils")
+    # Build docs
+    for md_path in glob.glob("docs/chapter_*/*.md"):    
+        build_markdown(md_path)
diff --git a/docs/utils/deploy.sh b/docs/utils/deploy.sh
new file mode 100644
index 000000000..fb269ea00
--- /dev/null
+++ b/docs/utils/deploy.sh
@@ -0,0 +1,8 @@
+# This script is borrowed from https://gist.github.com/cobyism/4730490
+
+git add build && git commit -m "build"
+git subtree push --prefix build origin built-docs
+
+mkdocs build --clean
+git add site && git commit -m "deploy"
+git subtree push --prefix site origin gh-pages
diff --git a/docs/utils/extract_code_python.py b/docs/utils/extract_code_python.py
new file mode 100755
index 000000000..fb660bca7
--- /dev/null
+++ b/docs/utils/extract_code_python.py
@@ -0,0 +1,117 @@
+"""
+File: extract_code_python.py
+Created Time: 2023-02-06
+Author: Krahets (krahets@163.com)
+"""
+
+import re
+import os
+import os.path as osp
+import glob
+
+class ExtractCodeBlocksPython:
+    def __init__(self, file_path) -> None:
+        self.file_path = file_path
+        with open(file_path) as f:
+            self.lines = f.readlines()
+            self.content = "".join(self.lines)
+            
+        # Regular expression pattern to match function names and class names
+        self.func_pattern = re.compile(r'(\s*)def\s+(\w+)\s*\(')
+        self.class_pattern = re.compile(r'class\s+(\w+)')
+        
+        # Detect and extract all the classes and fucntions
+        self.classes = self.extract_class_blocks()
+        self.functions = self.extract_function_blocks()
+
+    def search_block(self, header_line, indentation):
+        """
+        Search class/function block given the header_line and indentation
+        """
+        start_line, end_line = 0, len(self.lines)
+        # Search the code
+        for i in range(header_line + 1, len(self.lines)):
+            if re.search("^\s*\n|^\s{ind}\s+.+\n".replace("ind", str(indentation)),
+                         self.lines[i]) is None:
+                end_line = i
+                break
+        # Search the header comment
+        for i in range(header_line - 1, -1, -1):
+            if re.search('^\s{ind}""".+'.replace("ind", str(indentation)), 
+                         self.lines[i]) is not None:
+                start_line = i
+                break
+        func_block = self.lines[start_line:end_line] 
+        # Remove empty lines at bottom
+        for i in range(len(func_block) - 1, -1, -1):
+            if re.search("^\s*\n", func_block[i]) is None:
+                break
+            end_line -= 1
+        
+        return start_line, end_line, self.lines[start_line:end_line]
+        
+
+    def extract_function_blocks(self, indentation=0, start_line=-1, end_line=-1):
+        """
+        Extract all the functions with given indentation
+        """
+        functions = {}
+        
+        if start_line == -1:
+            start_line = 0
+        if end_line == -1:
+            end_line = len(self.lines) - 1
+            
+        for line_num in range(start_line, end_line + 1):
+            # Search the function header
+            func_match = self.func_pattern.match(self.lines[line_num])
+            if func_match is None: continue
+            # The function should match the input indentation
+            if len(func_match.group(1)) != indentation: continue
+            header_line = line_num
+            
+            # Search the block from the header line
+            start_line, end_line, func_block = self.search_block(header_line, indentation)
+            # Construct the functions dict
+            func_label = func_match.group(2)
+            functions[func_label] = {
+                "indentation": indentation,
+                "line_number": {
+                    "start": start_line,
+                    "end": end_line,
+                    "header": header_line,
+                },
+                "block": func_block,
+            }
+        
+        return functions
+
+    def extract_class_blocks(self):
+        """
+        Extract all the classes with given indentation
+        """
+        classes = {}
+        
+        for line_num, line in enumerate(self.lines):
+            # Search the class header
+            class_match = self.class_pattern.match(line)
+            if class_match is None: continue
+            header_line = line_num
+            
+            # Search the block from the header line
+            start_line, end_line, class_block = self.search_block(header_line, 0)
+            # Construct the classes dict
+            class_label = class_match.group(1)
+            classes[class_label] = {
+                "indentation": 0,
+                "line_number": {
+                    "start": start_line,
+                    "end": end_line,
+                    "header": header_line,
+                },
+                "block": class_block,
+                "functions": self.extract_function_blocks(
+                    indentation=4, start_line=start_line, end_line=end_line)
+            }
+        
+        return classes
diff --git a/mkdocs.yml b/mkdocs.yml
index ae4987632..ccdc539a2 100644
--- a/mkdocs.yml
+++ b/mkdocs.yml
@@ -3,11 +3,11 @@ site_name: Hello 算法
 site_url: https://www.hello-algo.com/
 site_author: Krahets
 site_description: 一本动画图解、能运行、可提问的数据结构与算法入门书
-docs_dir: docs
+docs_dir: build
 # Repository
 repo_name: krahets/hello-algo
 repo_url: https://github.com/krahets/hello-algo
-edit_uri: https://github.com/krahets/hello-algo/tree/master/docs/
+edit_uri: https://github.com/krahets/hello-algo/tree/main/docs/
 
 # Copyright
 copyright: Copyright &copy; 2022 Krahets
@@ -15,7 +15,7 @@ copyright: Copyright &copy; 2022 Krahets
 # Configuration
 theme:
   name: material
-  custom_dir: docs/overrides
+  custom_dir: build/overrides
   language: zh
   features:
     # - announce.dismiss