python 月份相加减

安装

pip install python-dateutil

使用

from datetime import datetime, date
from dateutil.relativedelta import relativedelta

now = datetime.now()
print(now)
print(now - relativedelta(months=3))
"""
2019-01-09 18:13:28.791192
2018-10-09 18:13:28.791192
"""

today = date.today()
print(today)
print(today - relativedelta(months=3))

"""
2019-01-09
2018-10-09
"""