计算日期时差python [英] Calculate date time difference python
问题描述
我正在编写timediff函数以计算2个给定日期时间之间的时间(秒)差异
I am writing timediff function to calculate the time (seconds) difference between 2 giving date time
def timediff(time1, time2):
timeformat = '%d%b%Y:%H:%M:%S'
#time1="01MAR2016:07:11:53"
#time2="01MAR2016:16:28:38"
try:
date_object1 = datetime.strptime(time1, timeformat)
date_object2 = datetime.strptime(time2, timeformat)
except ValueError:
print "time1 format: " + repr(time1)
print "time2 format: " + repr(time2)
raise
return abs((date_object2 - date_object1).seconds)
似乎不带月,日,年计算。如果它在相同的月,日,年中,则给出正确的计算。
It seems to not take the "month, date, year" to the calculation. It gives the right calculation if it is in the same "month, date, year"
>>> t1="01MAR2016:07:11:53"
>>> t2="01MAR2016:16:28:38"
>>> timediff(t1, t2)
33405
但是具有不同的月,日,年 ,它给出了错误的答案。这只会计算约18小时的时间差(约65k秒)
However with different "month, date, year", it gives the wrong answer. This only calculates time difference ~18hrs (which gives ~65k seconds)
>>> t1="02APR2016:06:43:51"
>>> t2="06APR2016:00:58:03"
>>> timediff(t1, t2)
65652
或者24小时不同,它给出0
Or 24hrs different it gives 0
>>> t1="01MAR2016:07:11:53"
>>> t2="02MAR2016:07:11:53"
>>> timediff(t1, t2)
0
datetime采用我给出的时间格式
The datetime takes the time format I gives
>>> t1="01MAR2016:07:11:53"
>>> t2="02MAR2016:07:11:53"
>>> datetime.strptime(t1, timeformat)
datetime.datetime(2016, 3, 1, 7, 11, 53)
>>> datetime.strptime(t2, timeformat)
datetime.datetime(2016, 3, 2, 7, 11, 53)
我错过了什么吗?
我还有另一种将日期时间转换为秒的方法。但是仍然想知道为什么这种方法行不通。
I have another alternative which convert date time to seconds. But still want to know why this method doesnt work.
我的选择
def timediff(time1, time2):
timeformat = '%d%b%Y:%H:%M:%S'
t1 = datetime.strptime(time1, timeformat)
t2 = datetime.strptime(time2, timeformat)
return abs(time.mktime(t1.timetuple()) - time.mktime(t2.timetuple()))
示例:
>>> t2
'02MAR2016:07:11:53'
>>> t1
'01MAR2016:07:11:53'
>>> timediff(t1,t2)
86400.0
推荐答案
您需要使用 total_seconds()
而不是 seconds
:
>>> import datetime
>>> f = '%d%b%Y:%H:%M:%S'
>>> t1 = '01MAR2016:07:11:53'
>>> t2 = '02MAR2016:07:11:53'
>>> d1 = datetime.datetime.strptime(t1, f)
>>> d2 = datetime.datetime.strptime(t2, f)
>>> print(d2-d1)
1 day, 0:00:00
>>> print((d2-d1).total_seconds())
86400.0
>>> print((d2-d1).seconds)
0
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