python中元组 (tuple)/列表 (list)/字典 (dict)的比较~

特性	元组 (tuple)	列表 (list)	字典 (dict)
可变性	不可变	可变	可变
性能	创建和访问速度快	创建和访问速度稍慢	访问速度超快
使用场景	存储顺序常量数据	存储顺序动态数据	存储随机动态数据
内存占用	较小	较大	较大
操作支持	较少	较多	较多

根据具体需求选择合适的数据结构：

• 如果需要存储不需要修改的数据，使用 元组。

• 如果需要存储需要动态修改的数据，使用 列表。

• 如果需要通过键快速查找值，使用 字典。

以下是三种数据结构的示例：

(
{"ticker":"002261","open":27.9500,"pre_close":27.1900,"close":29.9100,"high":29.9100,"low":27.6000,"volume":2430577.0000,"amount":7067431630.0000,"date":"2025-02-12"},
{"ticker":"002261","open":30.6100,"pre_close":30.1900,"close":33.2100,"high":33.2100,"low":29.4800,"volume":4111427.0000,"amount":13064592370.0000,"date":"2025-02-14"},
{"ticker":"002261","open":32.2900,"pre_close":29.9100,"close":30.1900,"high":32.9000,"low":29.9600,"volume":5749920.0000,"amount":18157238421.0000,"date":"2025-02-13"}
)

[
{"ticker":"002261","open":27.9500,"pre_close":27.1900,"close":29.9100,"high":29.9100,"low":27.6000,"volume":2430577.0000,"amount":7067431630.0000,"date":"2025-02-12"},
{"ticker":"002261","open":30.6100,"pre_close":30.1900,"close":33.2100,"high":33.2100,"low":29.4800,"volume":4111427.0000,"amount":13064592370.0000,"date":"2025-02-14"},
{"ticker":"002261","open":32.2900,"pre_close":29.9100,"close":30.1900,"high":32.9000,"low":29.9600,"volume":5749920.0000,"amount":18157238421.0000,"date":"2025-02-13"}
]

{
'2025-02-14': {'code': '002261', 'open': 30.61, 'pre_close': 30.19, 'close': 33.21, 'high': 33.21, 'low': 29.48, 'volume': 4111427, 'amount': 13064592370.0}, 
'2025-02-12': {'code': '002261', 'open': 27.95, 'pre_close': 27.19, 'close': 29.91, 'high': 29.91, 'low': 27.6, 'volume': 2430577, 'amount': 7067431630.0}, 
'2025-02-13': {'code': '002261', 'open': 32.29, 'pre_close': 29.91, 'close': 30.19, 'high': 32.9, 'low': 29.96, 'volume': 5749920, 'amount': 18157238421.0}
}