获取最接近给定日期的日期列表的索引

from datetime import datetime

def get_closest_date_index(target_date, date_list):
    min_difference = float('inf')
    closest_index = None
    
    for i, date in enumerate(date_list):
        difference = abs(target_date - date)
        if difference < min_difference:
            min_difference = difference
            closest_index = i
    
    return closest_index

# 示例日期列表
date_list = [
    datetime(2022, 1, 1),
    datetime(2022, 1, 15),
    datetime(2022, 2, 1),
    datetime(2022, 2, 15),
    datetime(2022, 3, 1)
]

# 目标日期
target_date = datetime(2022, 1, 10)

# 获取最接近目标日期的索引
closest_index = get_closest_date_index(target_date, date_list)
print(f"最接近目标日期的索引：{closest_index}")
print(f"最接近目标日期的日期：{date_list[closest_index]}")