python 使用循环提取同一时间的数据

假设有以下数据：

data = [
    {"time": "2021-01-01 09:00:00", "value": 10},
    {"time": "2021-01-01 09:05:00", "value": 20},
    {"time": "2021-01-01 09:10:00", "value": 30},
    {"time": "2021-01-01 09:15:00", "value": 40},
    {"time": "2021-01-01 09:20:00", "value": 50},
    {"time": "2021-01-01 09:25:00", "value": 60},
    {"time": "2021-01-01 09:30:00", "value": 70},
    {"time": "2021-01-01 09:35:00", "value": 80},
    {"time": "2021-01-01 09:40:00", "value": 90},
    {"time": "2021-01-01 09:45:00", "value": 100},
    {"time": "2021-01-01 09:50:00", "value": 110},
    {"time": "2021-01-01 09:55:00", "value": 120},
    {"time": "2021-01-02 09:00:00", "value": 10},
    {"time": "2021-01-02 09:05:00", "value": 20},
    {"time": "2021-01-02 09:10:00", "value": 30},
    {"time": "2021-01-02 09:15:00", "value": 40},
    {"time": "2021-01-02 09:20:00", "value": 50},
    {"time": "2021-01-02 09:25:00", "value": 60},
    {"time": "2021-01-02 09:30:00", "value": 70},
    {"time": "2021-01-02 09:35:00", "value": 80},
    {"time": "2021-01-02 09:40:00", "value": 90},
    {"time": "2021-01-02 09:45:00", "value": 100},
    {"time": "2021-01-02 09:50:00", "value": 110},
    {"time": "2021-01-02 09:55:00", "value": 120},
]

要提取同一时间（小时和分钟相同）的数据，可以使用 Python 的循环和条件语句。

result = {}
for item in data:
    time = item["time"]
    hour_min = time[11:16]  # 截取时间中的小时和分钟部分
    if hour_min not in result:
        result[hour_min] = []
    result[hour_min].append(item)
    
print(result)

输出结果为：

{
    "09:00": [
        {"time": "2021-01-01 09:00:00", "value": 10},
        {"time": "2021-01-02 09:00:00", "value": 10}
    ],
    "09:05": [
        {"time": "2021-01-01 09:05:00", "value": 20},
        {"time": "2021-01-02 09:05:00", "value": 20}
    ],
    "09:10": [
        {"time": "2021-01-01 09:10:00", "value": 30},
        {"time": "2021-01-02 09:10:00", "value": 30}
    ],
    "09:15": [
        {"time": "2021-01-01 09:15:00", "value": 40},
        {"time": "2021-01-02 09:15:00", "value": 40}
    ],
    "09:20": [
        {"time": "2021-01-01 09:20:00", "value": 50},
        {"time": "2021-01-02 09:20:00", "value": 50}
    ],
    "09:25": [
        {"time": "2021-01-01 09:25:00", "value": 60},
        {"time": "2021-01-02 09:25:00", "value": 60}
    ],
    "09:30": [
        {"time": "2021-01-01 09:30:00", "value": 70},
        {"time": "2021-01-02 09:30:00", "value": 70}
    ],
    "09:35": [
        {"time": "2021-01-01 09:35:00", "value": 80},
        {"time": "2021-01-02 09:35:00", "value": 80}
    ],
    "09:40": [
        {"time": "2021-01-01 09:40:00", "value": 90},
        {"time": "2021-01-02 09:40:00", "value": 90}
    ],
    "09:45": [
        {"time": "2021-01-01 09:45:00", "value": 100},
        {"time": "2021-01-02 09:45:00", "value": 100}
    ],
    "09:50": [
        {"time": "2021-01-01 09:50:00", "value": 110},
        {"time": "2021-01-02 09:50:00", "value": 110}
    ],
    "09:55": [
        {"time": "2021-01-01 09:55:00", "value": 120},
        {"time": "2021-01-02 09:55:00", "value": 120}
    ]
}

可以看到，同一时间的数据被提取出来并存储在字典中。每个键对应的值是一个列表，包含了所有该时间点的数据。