python(5)–datetime模块

1. datatime.date.today()     当前日期

>>> import datetime
>>> datetime.date.today()
datetime.date(2016, 3, 13)

2. datetime.datetime.now()    当前时间

>>> datetime.datetime.now()
datetime.datetime(2016, 3, 13, 21, 21, 32, 523934)

3. datetime.datetime.today()    当前时间

>>> datetime.datetime.today()
datetime.datetime(2016, 3, 13, 21, 22, 0, 85805)

4.  datetime.date.fromtimestamp()     将时间戳日期输出

>>> datetime.date.fromtimestamp(1457877369.650549)
datetime.date(2016, 3, 13)

5. datetime.datetime.fromtimestamp()     将时间戳输出

>>> datetime.datetime.fromtimestamp(1457877369.650549)
datetime.datetime(2016, 3, 13, 21, 56, 9, 650549)

6. timetuple()  转换为strucktime

>>> datetime.datetime.now().timetuple()
time.struct_time(tm_year=2016, tm_mon=3, tm_mday=13, tm_hour=22, tm_min=1, tm_se
c=25, tm_wday=6, tm_yday=73, tm_isdst=-1)

7.  replace()       替换日期，传什么替换什么

>>> datetime.datetime.now().replace(2014, 9, 12)
datetime.datetime(2014, 9, 12, 22, 3, 9, 229790)

8. strptime()

>>> datetime.datetime.strptime("21/11/06 16:30", "%d/%m/%y %H:%M")
datetime.datetime(2006, 11, 21, 16, 30)

9. 日期时间的加减

new_time = datetime.datetime.now() + datetime.timedelta(days=10)  #当前时间+10天
new_time = datetime.datetime.now() + datetime.timedelta(days=-10)
new_time = datetime.datetime.now() - datetime.timedelta(days=10)    #这两个都是当前时间-10天
new_time = datetime.datetime.now() - datetime.timedelta(hours=10)
new_time = datetime.datetime.now() - datetime.timedelta(seconds=10)