字典理解合并日期相同的字典列表中的所有值

dict_list = [
    {"date": "2022-01-01", "value": 10},
    {"date": "2022-01-01", "value": 20},
    {"date": "2022-01-02", "value": 30},
    {"date": "2022-01-02", "value": 40},
    {"date": "2022-01-03", "value": 50}
]

merged_dict = {d["date"]: [] for d in dict_list}  # 创建一个空列表作为每个日期键的值

for d in dict_list:
    merged_dict[d["date"]].append(d["value"])  # 将值添加到对应日期键的列表中

merged_list = [{"date": k, "values": v} for k, v in merged_dict.items()]  # 将结果转换为字典列表

print(merged_list)

[
    {"date": "2022-01-01", "values": [10, 20]},
    {"date": "2022-01-02", "values": [30, 40]},
    {"date": "2022-01-03", "values": [50]}
]