Python 將用戶指定的天/月/年添加到今天

Question

我正在嘗試將 x 天數或月數或年數添加到今天的日期，其中 x 和頻率均由用戶提供。

我查看了dateutil.relativedelta ，但由於它不接受字符串作為參數，我可以嘗試myStr='months=+6'然后使用relativedelta(myStr)我不知道該怎么做。 任何提示將不勝感激。

謝謝。

Answer 1

您可以在這里使用relativedelta ，您只需要正確指定它。

確保將今天的日期也指定為datetime時間 object。

from datetime import datetime
from dateutil.relativedelta import relativedelta

def add_calander(dmy, date):
    if dmy == 'D':
        value = int(input('How many days would you like to add?'))

        date = date + relativedelta(days=value)
    if dmy == 'M':
        value = int(input('How many months would you like to add?'))

        date = date + relativedelta(months=value)
    if dmy == 'Y':
        value = int(input('How many years would you like to add?'))

        date = date + relativedelta(years=value)

    return date

today = datetime.now()
dmy = input('Do you want to add days (D), months (M) or years (Y) to todays date?')

print(add_calander(dmy, today))

這允許用戶指定日、月或年，並使用relativedelta返回基於calendar年的計算值。

結果：

Do you want to add days (D), months (M) or years (Y) to todays date?M
How many months would you like to add?5
2020-10-15 08:19:56.814910

Do you want to add days (D), months (M) or years (Y) to todays date?Y
How many years would you like to add?10
2030-05-15 08:20:03.624634

Do you want to add days (D), months (M) or years (Y) to todays date?D
How many days would you like to add?6
2020-05-21 08:20:24.311311