如何检查日期是否在其他日期之间？

import datetime

def is_date_between(check_date, start_date, end_date):
    check_date = datetime.datetime.strptime(check_date, '%Y-%m-%d').date()
    start_date = datetime.datetime.strptime(start_date, '%Y-%m-%d').date()
    end_date = datetime.datetime.strptime(end_date, '%Y-%m-%d').date()

    if start_date <= check_date <= end_date:
        return True
    else:
        return False

# 示例用法
check_date = '2022-01-15'
start_date = '2022-01-01'
end_date = '2022-01-31'

if is_date_between(check_date, start_date, end_date):
    print("日期在起始日期和结束日期之间")
else:
    print("日期不在起始日期和结束日期之间")