python擷取指定日期的前n天或後n天日期

標籤：python   日期   

<pre name="code" class="plain">

首先匯入time，和datetime包

import datetimeimport time

實現代碼如下：

if __name__ == '__main__':        dt=sys.argv[1]        myday = datetime.datetime( int(dt[0:4]),int(dt[5:7]),int(dt[8:10]) ) + datetime.timedelta(days=-1)        dt = myday.strftime('%Y-%m-%d')        timestamp = int(time.mktime(time.strptime(dt, "%Y-%m-%d")))        print dt        datetime.timedelta()        now_time = datetime.datetime.now()        yes_time = now_time + datetime.timedelta(days=-2)        # yes_time_nyr = last_time.strftime('%Y%m%d')        print now_time        print yes_time        print yes_time.strftime('%Y-%m-%d')

運行命令： python test.py 2015-04-01
輸出結果：

2015-03-31
2015-04-01 10:46:28.099195
2015-03-30 10:46:28.099195
2015-03-30

python擷取指定日期的前n天或後n天日期