寻找给定日期和日期数组之间最小差异的公式

import datetime

def find_closest_date(target_date, date_array):
    min_diff = None
    closest_date = None

    for date in date_array:
        diff = abs((target_date - date).days)
        if min_diff is None or diff < min_diff:
            min_diff = diff
            closest_date = date

    return closest_date

# 示例用法
target_date = datetime.datetime(2022, 1, 1)
date_array = [
    datetime.datetime(2021, 12, 31),
    datetime.datetime(2022, 1, 2),
    datetime.datetime(2022, 1, 3)
]

closest_date = find_closest_date(target_date, date_array)
print("最接近给定日期的日期是:", closest_date)