如何根据日期计算预订价格

from datetime import datetime

def calculate_price(check_in_date, base_price=100):
    current_year = datetime.now().year
    check_in_date = datetime(current_year, check_in_date.month, check_in_date.day)
    
    # 定义旺季和淡季日期范围
    peak_season_start = datetime(current_year, 6, 1)
    peak_season_end = datetime(current_year, 9, 30)
    
    # 定义节假日
    holidays = [
        datetime(current_year, 12, 25),  # 圣诞节
        datetime(current_year, 1, 1)     # 元旦
    ]
    
    # 计算价格
    if peak_season_start <= check_in_date <= peak_season_end:
        price = base_price * 1.5  # 旺季加价50%
    else:
        price = base_price
    
    for holiday in holidays:
        if check_in_date == holiday:
            price *= 2  # 节假日翻倍
    
    return price

# 示例使用
check_in_date = datetime(2023, 7, 15)
price = calculate_price(check_in_date)
print(f"预订日期 {check_in_date.strftime('%Y-%m-%d')} 的价格为: ${price:.2f}")