递归函数遍历格式化字典

要对字典中的所有数值保留两位小数，可以使用递归函数遍历字典，并对所有数值进行格式化：

def format_floats(data):
    if isinstance(data, dict):
        return {k: format_floats(v) for k, v in data.items()}
    elif isinstance(data, list):
        return [format_floats(item) for item in data]
    elif isinstance(data, float):
        return round(data, 2)
    elif isinstance(data, int):
        return round(float(data), 2)
    else:
        return data

完整代码：

def format_floats(data):
    if isinstance(data, dict):
        return {k: format_floats(v) for k, v in data.items()}
    elif isinstance(data, list):
        return [format_floats(item) for item in data]
    elif isinstance(data, float):
        return round(data, 2)
    else:
        return data

# 示例字典
data = [
    {
        'date': '2024-07',
        'extra_match_details': [
            {
                'cost': 917897.2000000001,
                'vaporization_rate': 1473.62,
                'resource_id': '1C1A249F59861239FC43F35FB0F0E799',
                'match_amount': 220
            }
        ],
        'match_details': [
            {
                'excess_amount': 0,
                'vaporization_rate': 1,
                'total_cost': 2183999.9999999995,
                'shortfall_amount': 0,
                'shortfall_cost': 0,
                'resource_id': '4354',
                'match_amount': 330517,
                'excess_cost': 0
            },
            {
                'excess_amount': 0,
                'vaporization_rate': 1,
                'total_cost': 98029395.20000002,
                'shortfall_amount': 0,
                'shortfall_cost': 0,
                'resource_id': '4769',
                'match_amount': 21043029,
                'excess_cost': 0
            }
        ]
    }
]

# 对字典中的所有数值保留两位小数
formatted_data = format_floats(data)

# 打印结果
import pprint
pprint.pprint(formatted_data)