对一列的每个不同id的丢失时间戳进行计数

data = [
    {"id": 1, "timestamp": 1627836000},
    {"id": 2, "timestamp": 1627836000},
    {"id": 1, "timestamp": 1627836100},
    {"id": 3, "timestamp": 1627836100},
    {"id": 2, "timestamp": 1627836200},
    {"id": 1, "timestamp": 1627836200},
    {"id": 3, "timestamp": 1627836300}
]

count_dict = {}

for item in data:
    id = item["id"]
    if id not in count_dict:
        count_dict[id] = 1
    else:
        count_dict[id] += 1

for id, count in count_dict.items():
    print("ID:", id)
    print("Count:", count)

ID: 1
Count: 3
ID: 2
Count: 2
ID: 3
Count: 2