对数据帧中列表中的所有项目进行计数(Python)

from collections import Counter

def count_items(data_frame):
    # 统计列表中每个项目的出现次数
    counter = Counter(data_frame)

    # 打印每个项目及其对应的计数
    for item, count in counter.items():
        print(f"{item}: {count}")

# 示例数据
data_frame = [1, 2, 3, 2, 1, 3, 4, 5, 1, 2, 3]

# 调用函数进行计数
count_items(data_frame)

1: 3
2: 3
3: 3
4: 1
5: 1