按特定日期的月份分组python

import datetime

# 假设有一组日期数据
dates = [
    datetime.date(2022, 1, 5),
    datetime.date(2022, 1, 15),
    datetime.date(2022, 2, 8),
    datetime.date(2022, 2, 20),
    datetime.date(2022, 3, 10),
    datetime.date(2022, 3, 25)
]

# 创建一个字典用于存储按月份分组的结果
grouped_dates = {}

# 遍历日期数据，按月份进行分组
for date in dates:
    month = date.strftime("%Y-%m")
    if month not in grouped_dates:
        grouped_dates[month] = []
    grouped_dates[month].append(date)

# 打印按月份分组的结果
for month, dates in grouped_dates.items():
    print(month, dates)

2022-01 [datetime.date(2022, 1, 5), datetime.date(2022, 1, 15)]
2022-02 [datetime.date(2022, 2, 8), datetime.date(2022, 2, 20)]
2022-03 [datetime.date(2022, 3, 10), datetime.date(2022, 3, 25)]