Python编程：dateutil模块实现月份相加减

文档：http://labix.org/python-dateutil pypi: https://pypi.org/project/python-dateutil/

安装

pip install python-dateutil

代码示例

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
"""

参考：

1. python 时间处理之月份加减
2. Python 月份加减