按属性对JSON输出进行分组

import json

# 示例的JSON数据
json_data = '''
[
    {"name": "Apple", "category": "fruit", "price": 1.0},
    {"name": "Banana", "category": "fruit", "price": 0.5},
    {"name": "Carrot", "category": "vegetable", "price": 0.3},
    {"name": "Tomato", "category": "vegetable", "price": 0.8}
]
'''

# 解析JSON数据
data = json.loads(json_data)

# 选择分组属性
group_by = "category"

# 创建分组数据结构
groups = {}

# 遍历JSON数据
for item in data:
    # 根据属性值进行分组
    group_value = item[group_by]
    if group_value not in groups:
        groups[group_value] = []
    groups[group_value].append(item)

# 输出分组结果
grouped_json = json.dumps(groups, indent=4)
print(grouped_json)

{
    "fruit": [
        {
            "name": "Apple",
            "category": "fruit",
            "price": 1.0
        },
        {
            "name": "Banana",
            "category": "fruit",
            "price": 0.5
        }
    ],
    "vegetable": [
        {
            "name": "Carrot",
            "category": "vegetable",
            "price": 0.3
        },
        {
            "name": "Tomato",
            "category": "vegetable",
            "price": 0.8
        }
    ]
}