对json文件中出现的名称进行计数

import json

def count_names(json_data):
    name_counts = {}
    
    # 解析JSON文件
    data = json.loads(json_data)
    
    # 遍历JSON对象
    def traverse(obj):
        if isinstance(obj, dict):
            for key, value in obj.items():
                if isinstance(key, str):
                    # 统计名称出现次数
                    if key in name_counts:
                        name_counts[key] += 1
                    else:
                        name_counts[key] = 1
                traverse(value)
        elif isinstance(obj, list):
            for item in obj:
                traverse(item)
    
    traverse(data)
    
    # 按照名称的频率排序
    sorted_counts = sorted(name_counts.items(), key=lambda x: x[1], reverse=True)
    
    # 输出计数结果
    for name, count in sorted_counts:
        print(f"{name}: {count}")