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python - 如何在 python 中连接日期？

问题描述

我想连接特定时间段之间的日期，即 2017.08.15 - 2018.08.15，我希望在列表或集合中以字符串格式显示：

("2017.08.15", "2017.08.16", ...)

有没有办法连接日期？

标签： pythonpython-3.x

解决方案

不确定日期格式是否重要，但这是我解决问题的方法。希望这会有所帮助。

from datetime import date, timedelta


def get_dates(start_date, end_date):
    """
    :param start_date: date as a string ('YYYY.MM.DD')
    :param end_date: date as a string ('YYYY.MM.DD')
    :return: returns list of dates formatted as strings
    """
    # convert date as string to array of ints
    # i.e '2017.08.15 => [2017, 8, 15]
    start_date = map(int, start_date.split('.'))
    end_date = map(int, end_date.split('.'))

    # unpack array with date values into date objects
    start_date = date(*start_date)
    end_date = date(*end_date)

    # find difference between end_date and start
    delta = end_date - start_date

    # create list of dates between start_date and end_date
    dates = [start_date + timedelta(i) for i in range(delta.days + 1)]
    # format dates
    formatted_dates = [f'{date.year}.{date.month:02d}.{date.day:02d}' for date in dates]
    return formatted_dates


print(get_dates("2017.08.15", "2017.09.15"))

输出：

['2017.08.15', '2017.08.16', ... '2017.09.15']

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