python datetime模塊簡單記錄
https://docs.python.org/2.7/library/datetime.html#
一、datetime模塊下的有多個類用來操作日期和時間,如下
date、time、datetime、timedelta、tzinfo
引用如下
# encoding: utf-8
from datetime import date, time, datetime, timedelta, tzinfo
二、各個類的簡單使用
-
timedelta類
代表date或time的差值
初始化
# encoding: utf-8
from datetime import date, time, datetime, timedelta, tzinfo
a = timedelta(days=0,seconds=0,microseconds=0,milliseconds=0,minutes=0,hours=0,weeks=0)
d = timedelta(microseconds=-1)
print(d.days, d.seconds, d.microseconds) # (-1, 86399, 999999)
cc = (-24*60*60+d.seconds)*1000000+d.microseconds # -1
1 millisecond(微秒)= 1000 microseconds(毫秒)
系統內部只存儲 days 、seconds 、microseconds ,其他的參數被轉換成這三種
- date類