獲取當前日期和時間

1 >>> from datetime import datetime
2 >>> now = datetime.now()
3 >>> now
4 datetime.datetime(2018, 12, 30, 9, 30, 2, 734917)
5 >>> print(now)
6 2018-12-30 09:30:02.734917

獲取指定日期和時間

1 >>> from datetime import
 
 datetime
2 >>> dt = datetime(2015, 4, 19, 12, 20) # 用指定日期時間建立datetime
3 >>> print(dt)
4 2015-04-19 12:20:00

datetime轉換為timestamp

>>> from datetime import datetime
>>> dt = datetime(2015, 4, 19, 12, 20) # 用指定日期時間建立datetime
>>> dt.timestamp() #
 
 把datetime轉換為timestamp
1429417200.0

timestamp轉換為datetime

>>> from datetime import datetime
>>> t = 1429417200.0
>>> print(datetime.fromtimestamp(t))
2015-04-19 12:20:00

str轉換為datetime

>>> from datetime import datetime
 
>>> cday = datetime.strptime('2015-6-1 18:19:59', '%Y-%m-%d %H:%M:%S')
>>> print(cday)
2015-06-01 18:19:59

datetime轉換為str

>>> from datetime import datetime
>>> now = datetime.now()
>>> print(now.strftime('%a, %b %d %H:%M'))
Mon, May 05 16:28

datetime加減

>>> from datetime import datetime, timedelta
>>> now = datetime.now()
>>> now
datetime.datetime(2015, 5, 18, 16, 57, 3, 540997)
>>> now + timedelta(hours=10)
datetime.datetime(2015, 5, 19, 2, 57, 3, 540997)
>>> now - timedelta(days=1)
datetime.datetime(2015, 5, 17, 16, 57, 3, 540997)
>>> now + timedelta(days=2, hours=12)
datetime.datetime(2015, 5, 21, 4, 57, 3, 540997)