在Python中查找任意给定年份的6月和12月的最后营业日期

import pandas as pd
from datetime import datetime

def get_last_business_day(year):
    # 假设的公共假期列表（示例）
    holidays = [
        datetime(year, 1, 1),  # 元旦
        datetime(year, 12, 25),  # 圣诞节
        # 添加其他公共假期...
    ]
    
    # 定义一个函数来检查是否是营业日
    def is_business_day(date):
        return date.weekday() < 5 and date not in holidays
    
    # 查找6月和12月的最后营业日期
    last_business_day_june = None
    last_business_day_december = None
    
    for month in [6, 12]:
        # 生成该月的所有日期
        dates_in_month = pd.date_range(start=f"{year}-{month}-01", end=f"{year}-{month+1}-01", closed='left')
        
        for date in reversed(dates_in_month):
            if is_business_day(date):
                if month == 6:
                    last_business_day_june = date
                elif month == 12:
                    last_business_day_december = date
                break
    
    return last_business_day_june, last_business_day_december

# 示例使用
year = 2023
june_last_business_day, december_last_business_day = get_last_business_day(year)
print(f"2023年6月的最后营业日期是: {june_last_business_day}")
print(f"2023年12月的最后营业日期是: {december_last_business_day}")