如何获取仅针对给定月份的最后一天可用的值？

import datetime

def get_last_day_of_month(year, month):
    # 构建日期对象，设置为给定月份的第一天
    first_day = datetime.date(year, month, 1)
    
    # 获取下个月的第一天
    next_month = first_day.replace(day=28) + datetime.timedelta(days=4)
    last_day = next_month - datetime.timedelta(days=next_month.day)
    
    return last_day

# 获取当前日期的年份和月份
current_date = datetime.date.today()
current_year = current_date.year
current_month = current_date.month

# 获取当前月份的最后一天
last_day_of_current_month = get_last_day_of_month(current_year, current_month)

# 输出结果
print("当前月份的最后一天是：", last_day_of_current_month)