XUEXIN

import datetime


def is_leap_year(year):
    """判断给定的年份是否为闰年"""
    return year % 4 == 0 and (year % 100 != 0 or year % 400 == 0)


def days_in_month(year, month):
    """返回给定年月的天数"""
    if month in [1, 3, 5, 7, 8, 10, 12]:
        return 31
    elif month in [4, 6, 9, 11]:
        return 30
    elif month == 2:
        return 29 if is_leap_year(year) else 28
    else:
        raise ValueError("Invalid month")


def print_month_header(year, month):
    """打印月份头部信息"""
    weekdays = ["一", "二", "三", "四", "五", "六", "日"]
    print(f"{year}年{month}月")
    print(" ".join(weekdays))


def print_month_days(year, month):
    """打印月份的具体日期"""
    first_day_of_month = datetime.date(year, month, 1)
    offset = first_day_of_month.weekday()
    days = days_in_month(year, month)

    # 打印空白以对齐第一天
    print(" " * (offset * 3), end="")
    for day in range(1, days + 1):
        print(f"{day:2d}", end=" ")
        if (day + offset) % 7 == 0:  # 换行处理
            print()  # 新的一行
    print()  # 结束月份后换行


def generate_year_calendar(year):
    """生成指定年份的万年历"""
    print(f"以下是{year}年的日历：")
    for month in range(1, 13):
        print_month_header(year, month)
        print_month_days(year, month)



generate_year_calendar(2024)