python time datetime

datetime 模块

>>> import datetime
>>> datetime.datetime.now()
datetime.datetime(2019, 1, 12, 15, 43, 12, 21677)
>>> now_time = datetime.datetime.now()
>>> print(now_time)
2019-01-12 15:43:48.265809
>>> # 只能调整的字段： weeks days hours minutes seconds
>>> print(now_time + datetime.timedelta(weeks=2))  # 两周后
2019-01-26 15:43:48.265809
>>> print(now_time + datetime.timedelta(weeks=-2))  # 两周前
2018-12-29 15:43:48.265809
>>> print(now_time + datetime.timedelta(days=3))    #三天后
2019-01-15 15:43:48.265809
>>> print(now_time + datetime.timedelta(days=-3))   #三天前
2019-01-09 15:43:48.265809
>>> print(now_time + datetime.timedelta(hours=5))   # 5小时后
2019-01-12 20:43:48.265809
>>> print(now_time + datetime.timedelta(hours=-5))   # 5小时前
2019-01-12 10:43:48.265809
>>> print(now_time + datetime.timedelta(minutes=10))   # 10分钟后
2019-01-12 15:53:48.265809
>>> print(now_time + datetime.timedelta(minutes=-10))  # 10分钟前
2019-01-12 15:33:48.265809
>>> print(now_time + datetime.timedelta(seconds=-80))  # 80秒前
2019-01-12 15:42:28.265809
>>> print(now_time + datetime.timedelta(seconds=80))   # 80秒后
2019-01-12 15:45:08.265809
>>> 
>>> # 可以直接调整到指定的 年 月 日 时 分 秒 等
>>> current_time = datetime.datetime.now()
>>> print(current_time.replace(year=1996))
1996-01-12 15:56:21.405609
>>> print(current_time.replace(month=8))
2019-08-12 15:56:21.405609
>>> print(current_time.replace(year=2004, month=9,day=1))
2004-09-01 15:56:21.405609
>>> 
>>> print(datetime.date.fromtimestamp(1309480210))   # 将时间戳转化成时间
2011-07-01
>>>