#
中间过程，一般都需要将字符串转化为时间数组
time.strptime(a,
'
%Y-%m-%d %H:%M:%S
'
)
>>time.struct_time(tm_year=2011, tm_mon=9, tm_mday=27, tm_hour=10, tm_min=50, tm_sec=0, tm_wday=1, tm_yday=270, tm_isdst=-1
)
#
将"2011-09-28 10:00:00"转化为时间戳
time.mktime(time.strptime(a,
'
%Y-%m-%d %H:%M:%S
'
))
>>1317091800.0
#
将时间戳转化为localtime
x = time.localtime(1317091800.0
)
time.strftime(
'
%Y-%m-%d %H:%M:%S
'
,x)
>>2011-09-27 10:50:00
timeArray = time.strptime(a,
"
%Y-%m-%d %H:%M:%S
"
)
转换为时间戳:
timeStamp
=
int(time.mktime(timeArray))
timeStamp
== 1381419600
2
.字符串格式更改
如a
=
"
2013-10-10 23:40:00
"
,想改为 a =
"
2013/10/10 23:40:00
"
方法:先转换为时间数组,然后转换为其他格式
timeArray
= time.strptime(a,
"
%Y-%m-%d %H:%M:%S
"
)
otherStyleTime
= time.strftime(
"
%Y/%m/%d %H:%M:%S
"
, timeArray)
3
.时间戳转换为指定格式日期:
利用localtime()转换为时间数组,然后格式化为需要的格式,如
timeStamp
= 1381419600
timeArray
=
time.localtime(timeStamp)
otherStyleTime
= time.strftime(
"
%Y-%m-%d %H:%M:%S
"
, timeArray)
otherStyletime
==
"
2013-10-10 23:40:00
"
importdatetime
timeStamp
= 1381419600
dateArray
=
datetime.datetime.utcfromtimestamp(timeStamp)
otherStyleTime
= dateArray.strftime(
"
%Y-%m-%d %H:%M:%S
"
)
otherStyletime
==
"
2013-10-10 23:40:00
"
4
.获取当前时间并转换为指定日期格式
importtime
获得当前时间时间戳
now
= int(time.time()) ->
这是时间戳
转换为其他日期格式,如:
"
%Y-%m-%d %H:%M:%S
"
timeArray
=
time.localtime(timeStamp)
otherStyleTime
= time.strftime(
"
%Y-%m-%d %H:%M:%S
"
, timeArray)
importdatetime
获得当前时间
now
= datetime.datetime.now() ->
这是时间数组格式
转换为指定的格式:
otherStyleTime
= now.strftime(
"
%Y-%m-%d %H:%M:%S
"
)
5
.获得三天前的时间
importtime
importdatetime
先获得时间数组格式的日期
threeDayAgo
= (datetime.datetime.now() - datetime.timedelta(days = 3
))
转换为时间戳:
timeStamp
=
int(time.mktime(threeDayAgo.timetuple()))
转换为其他字符串格式:
otherStyleTime
= threeDayAgo.strftime(
"
%Y-%m-%d %H:%M:%S
"
)
注:timedelta()的参数有:days,hours,seconds,microseconds
6
.给定时间戳,计算该时间的几天前时间:
timeStamp
= 1381419600
先转换为datetime
importdatetime
importtime
dateArray
=
datetime.datetime.utcfromtimestamp(timeStamp)
threeDayAgo
= dateArray - datetime.timedelta(days = 3
)
参考5,可以转换为其他的任意格式了
