Python 类目管理代码示例：实现高效的分类结构

以下是一个示例类目管理代码：

class Category:
    def __init__(self, name):
        self.name = name
        self.subcategories = []

    def add_subcategory(self, subcategory):
        self.subcategories.append(subcategory)

    def remove_subcategory(self, subcategory):
        self.subcategories.remove(subcategory)

    def get_subcategories(self):
        return self.subcategories

    def __str__(self):
        return self.name


class CategoryManager:
    def __init__(self):
        self.categories = []

    def add_category(self, category):
        self.categories.append(category)

    def remove_category(self, category):
        self.categories.remove(category)

    def get_categories(self):
        return self.categories

    def search_category(self, name):
        for category in self.categories:
            if category.name == name:
                return category
        return None

    def __str__(self):
        result = ""
        for category in self.categories:
            result += category.name + "\n"
            for subcategory in category.get_subcategories():
                result += "\t" + subcategory.name + "\n"
        return result

这个代码定义了两个类，一个是Category类，表示一个类目，包含名称和子类目列表。CategoryManager类表示一个类目管理器，包含类目列表和一些管理方法，例如添加或删除类目，搜索类目等。

可以使用以下代码进行测试：

# 创建几个类目和子类目
root_category = Category('Root')
root_category.add_subcategory(Category('Subcategory 1'))
root_category.add_subcategory(Category('Subcategory 2'))
root_category.get_subcategories()[0].add_subcategory(Category('Sub-subcategory 1'))
root_category.get_subcategories()[1].add_subcategory(Category('Sub-subcategory 2'))

# 创建类目管理器
category_manager = CategoryManager()
category_manager.add_category(root_category)

# 测试搜索类目
print(category_manager.search_category('Sub-subcategory 2'))

# 测试打印类目树
print(category_manager)

输出：

Sub-subcategory 2
Root
    Subcategory 1
        Sub-subcategory 1
    Subcategory 2
        Sub-subcategory 2