用python学有个红黑树

红黑树是一种自平衡的二叉搜索树，它在插入和删除节点时通过一系列的旋转和重新着色操作来保持树的平衡。Python是一种功能强大且易于学习的编程语言，可以用来实现红黑树。

在Python中，你可以使用类来定义一个红黑树的节点，并在节点类中实现插入、删除和搜索等操作。下面是一个简单的红黑树的实现示例：

class Node:
    def __init__(self, key):
        self.key = key
        self.left = None
        self.right = None
        self.parent = None
        self.color = 1  # 1表示红色，0表示黑色

class RedBlackTree:
    def __init__(self):
        self.nil = Node(None)  # 哨兵节点，表示空节点
        self.root = self.nil

    def insert(self, key):
        node = Node(key)
        node.left = self.nil
        node.right = self.nil
        node.color = 1  # 新插入的节点为红色

        parent = None
        current = self.root
        while current != self.nil:
            parent = current
            if node.key < current.key:
                current = current.left
            else:
                current = current.right

        node.parent = parent
        if parent is None:
            self.root = node
        elif node.key < parent.key:
            parent.left = node
        else:
            parent.right = node

        self._insert_fixup(node)

    def _insert_fixup(self, node):
        while node.parent.color == 1:
            if node.parent == node.parent.parent.left:
                uncle = node.parent.parent.right
                if uncle.color == 1:
                    node.parent.color = 0
                    uncle.color = 0
                    node.parent.parent.color = 1
                    node = node.parent.parent
                else:
                    if node == node.parent.right:
                        node = node.parent
                        self._left_rotate(node)
                    node.parent.color = 0
                    node.parent.parent.color = 1
                    self._right_rotate(node.parent.parent)
            else:
                uncle = node.parent.parent.left
                if uncle.color == 1:
                    node.parent.color = 0
                    uncle.color = 0
                    node.parent.parent.color = 1
                    node = node.parent.parent
                else:
                    if node == node.parent.left:
                        node = node.parent
                        self._right_rotate(node)
                    node.parent.color = 0
                    node.parent.parent.color = 1
                    self._left_rotate(node.parent.parent)

        self.root.color = 0

    def _left_rotate(self, x):
        y = x.right
        x.right = y.left
        if y.left != self.nil:
            y.left.parent = x
        y.parent = x.parent
        if x.parent is None:
            self.root = y
        elif x == x.parent.left:
            x.parent.left = y
        else:
            x.parent.right = y
        y.left = x
        x.parent = y

    def _right_rotate(self, x):
        y = x.left
        x.left = y.right
        if y.right != self.nil:
            y.right.parent = x
        y.parent = x.parent
        if x.parent is None:
            self.root = y
        elif x == x.parent.right:
            x.parent.right = y
        else:
            x.parent.left = y
        y.right = x
        x.parent = y

    def search(self, key):
        current = self.root
        while current != self.nil and key != current.key:
            if key < current.key:
                current = current.left
            else:
                current = current.right
        return current

    def delete(self, key):
        node = self.search(key)
        if node == self.nil:
            return
        self._delete_node(node)

    def _delete_node(self, node):
        # 省略删除节点的代码

    # 其他辅助方法省略...

这只是一个简单的红黑树实现示例，你可以根据需要进行扩展和优化。希望对你学习红黑树有所帮助！