在python中查找最大日期之前的日期

import datetime

def find_dates_before_max(dates, max_date):

    before_dates = []

    for date in dates:
        if date < max_date:
            before_dates.append(date)

    return before_dates

import datetime

def find_dates_before_max(dates, max_date):
    before_dates = []
    for date in dates:
        if date < max_date:
            before_dates.append(date)
    return before_dates

dates = [datetime.date(2022, 1, 1), datetime.date(2022, 1, 2), datetime.date(2022, 1, 3), datetime.date(2022, 1, 4)]
max_date = datetime.date(2022, 1, 3)

before_dates = find_dates_before_max(dates, max_date)
print(before_dates)

[datetime.date(2022, 1, 1), datetime.date(2022, 1, 2)]