上个月到最后 10 个月 pandas 日期时间

Question

如何创建两个变量。1 -上个月的变量2 -过去 10 个月的变量就像代表 TODAY - 10 个月的日期一样，例如：2020/02/05 - 10 months =  2019/04/05.我的代码：import datime# 1- last monthmonth = datetime.datetime.now().monthyear = datetime.datetime.now().yearlast_month = f"{year}/{month-1}/01">>>"2020/01/05"# Past 12 monthspast_10month = datetime.datetime.today()past_10month = f"{past_10month -285}">>># DO NOT WORK# EXPECTED RESULT:# "2019/04/05"

Answer 1

from datetime import datetime

from dateutil.relativedelta import relativedelta

dt = datetime.now()

last_month = (dt - relativedelta(months=1)).date()

last_year = (dt - relativedelta(months=10)).date()

输出：

2020-01-05

2019-04-05