Python針對(duì)日期時(shí)間的處理提供了大量的package，類(lèi)和方法，但在可用性上來(lái)看非常繁瑣和麻煩

第三方庫(kù)Arrow提供了一個(gè)合理的、人性化的方法來(lái)創(chuàng)建、操作、格式轉(zhuǎn)換的日期，時(shí)間，和時(shí)間戳，幫助我們使用較少的導(dǎo)入和更少的代碼來(lái)處理日期和時(shí)間。

$ pip install arrow

獲取當(dāng)前時(shí)間 arrow.utcnow(), arrow.now()

>>> arrow.utcnow() <Arrow [2018-02-24T13:15:29.981135+00:00]> >>> arrow.now() <Arrow [2018-02-24T21:15:50.841056+08:00]>

將時(shí)間戳轉(zhuǎn)化為arrow對(duì)象 arrow.get(timestamp)

>>> arrow.get(1519534533) <Arrow [2018-02-25T04:55:33+00:00]>>>> arrow.get(’1519534533’) <Arrow [2018-02-25T04:55:33+00:00]> >>> arrow.get(1519534533.153443)<Arrow [2018-02-25T04:55:33.153443+00:00]> >>> arrow.get(’1519534533.153443’)<Arrow [2018-02-25T04:55:33.153443+00:00]>

時(shí)間戳可以是int，float或者可以轉(zhuǎn)化為float的字符串

將字符串轉(zhuǎn)換為arrow對(duì)象 arrow.get(string[,format_string])

>>> arrow.get(’2018-02-24 12:30:45’, ’YYYY-MM-DD HH:mm:ss’)<Arrow [2018-02-24T12:30:45+00:00]>

遵循ISO-8601的字符串不需要格式字符串參數(shù)即可轉(zhuǎn)換

>>> arrow.get(’2018-02-24T13:00:00.000-07:00’)<Arrow [2018-02-24T13:00:00-07:00]>

可以從字符串中通過(guò)格式參數(shù)搜索時(shí)間

>>> arrow.get(’June was born in May 1980’, ’MMMM YYYY’)<Arrow [1980-05-01T00:00:00+00:00]>

直接創(chuàng)建arrow對(duì)象

>>> arrow.get(2018, 2, 24)<Arrow [2018-02-24T00:00:00+00:00]>>>> arrow.Arrow(2018, 2, 24)<Arrow [2018-02-24T00:00:00+00:00]>

arrow對(duì)象屬性 datetime,timestamp,native,tzinfo

>>> a = arrow.utcnow()>>> a.datetimedatetime.datetime(2018, 2, 24, 21, 15, 50, 841056, tzinfo=tzlocal())>>> a.timestamp1519478150>>> a.naivedatetime.datetime(2018, 2, 24, 21, 58, 4, 309575)>>> a.tzinfotzlocal()

獲取datetime對(duì)象的值

>>> a.hour21 >>> a.day2

時(shí)間推移 a.shift(**kwargs)

shift方法獲取某個(gè)時(shí)間之前或之后的時(shí)間,關(guān)鍵字參數(shù)為years,months,weeks,days,hours，seconds，microseconds

>>> a.shift(weeks=+3) #三周后<Arrow [2018-03-17T21:58:04.309575+08:00]> >>> a.shift(days=-1) #一天前 <Arrow [2018-02-23T21:58:04.309575+08:00]>>> a.shift(weekday=6) #距離最近a的星期日，weekday從0到6<Arrow [2018-02-25T21:58:04.309575+08:00]>

時(shí)間替換 a.replace(**kwargs)

返回一個(gè)被替換后的arrow對(duì)象，原對(duì)象不變

>>> a<Arrow [2018-02-24T21:58:04.309575+08:00]>>>> a.replace(hour=9)<Arrow [2018-02-24T09:58:04.309575+08:00]>

格式化輸出 a.format([format_string])

>>> a.format()’2018-02-24 21:58:04+08:00’>>> a.format(’YYYY-MM-DD HH:mm:ss ZZ’)’2018-02-24 21:58:04 +08:00’

人性化輸出 a.humanize()

>>> present = arrow.utcnow()>>> past = present.shift(hours=-1)>>> past.humanize() #相對(duì)于當(dāng)前時(shí)間’an hour age’>>> future = present.shift(hours=2)>>> future.humanize(present) #相對(duì)于參數(shù)時(shí)間’in 2 hours’>>> past.humanize(present, locale=’zh’) #locale參數(shù)可以指定地區(qū)語(yǔ)言’1天前’

時(shí)間范圍和區(qū)間 a.span(string), a.floor(), a.ceil()

arrow.Arrow.span_range(),arrow.Arrow.range()

>>> a<Arrow [2018-02-24T21:58:04.309575+08:00]>>>> a.span(’hour’) #a所在的時(shí)間區(qū)間(<Arrow [2018-02-24T21:00:00+08:00]>, <Arrow [2018-02-24T21:59:59.999999+08:00]>) >>> a.floor(’hour’) #a所在區(qū)間的開(kāi)始 <Arrow [2018-02-24T21:00:00+08:00]>>>> a.ceil(’hour’) #a所在區(qū)間的結(jié)尾<Arrow [2018-02-24T21:59:59.999999+08:00]

>>> start = datetime.datetime(2018, 2, 24, 12, 30)>>> end = datetime.datetime(2018, 2, 24, 15, 20)>>> for r in arrow.Arrow.span_range(’hour’,start,end): #獲取start，end之間的時(shí)間區(qū)間... print(r)...(<Arrow [2018-02-24T12:00:00+00:00]>, <Arrow [2018-02-24T12:59:59.999999+00:00]>)(<Arrow [2018-02-24T13:00:00+00:00]>, <Arrow [2018-02-24T13:59:59.999999+00:00]>)(<Arrow [2018-02-24T14:00:00+00:00]>, <Arrow [2018-02-24T14:59:59.999999+00:00]>)(<Arrow [2018-02-24T15:00:00+00:00]>, <Arrow [2018-02-24T15:59:59.999999+00:00]>)>>> for r in arrow.Arrow.range(’hour’,start,end): #獲取間隔單位時(shí)間的時(shí)間... print(r)...2018-02-24T12:30:00+00:002018-02-24T13:30:00+00:002018-02-24T14:30:00+00:00

格式化字符串標(biāo)記

更多請(qǐng)參考官方文檔和Github官方文檔Github

到此這篇關(guān)于Python 處理日期時(shí)間的Arrow庫(kù)使用的文章就介紹到這了,更多相關(guān)Python 日期時(shí)間Arrow庫(kù)內(nèi)容請(qǐng)搜索好吧啦網(wǎng)以前的文章或繼續(xù)瀏覽下面的相關(guān)文章希望大家以后多多支持好吧啦網(wǎng)！