python库-Arrow处理时间

　　Arrow是一个处理时间的python库，能一键转换dates/times/timestamps等时间格式而不需要大量导致各种时间模块和格式转换函数，十分快捷方便

使用Arrow需要两步转换操作：

　　1、接收各种类型的时间datetimes/date/timestamp转换为Arrow类型

　　2、转换为自己需要的格式或者操作

import arrow

# 获取当前时间的Arrow格式
a = arrow.now()
print(a)

# 2018-03-08T23:21:21.981044+08:00

# 转换为时间戳
print(a.timestamp)

# 1520522514


# 年月日
print(a.format('MM/DD/YYYY HH:mm:ss'))
# 03/08/2018 23:22:43

# 星期
print(a.format('MMMM DD dd'))
# March 08

# 时间戳转换为日期
timeStamp = 1730522598
b = arrow.get(timeStamp)
print(b)
# 2024-11-02T04:43:18+00:00


# 字符串转时间戳
c = '2009-01-01 23:00:00'
d = arrow.get(c)
print(d.timestamp)
# 1230850800


# 90年后的日期
print(d.shift(years=90).format('YYYY/MM/DD HH:mm:ss'))
# 2099/01/01 23:00:00

# 修改日期
print(d.replace(year=1992,month=2,days=18).format('YYYY-MM-DD HH:mm:ss'))
# 1992-02-19 23:00:00

方法：

　　根据数据创建时间

　　arrow.Arrow(year, month, day, hour=0, minute=0, second=0, microsecond=0,tzinfo=None)

m = arrow.Arrow(2008,5,6 )
print(m)
# 2008-05-06T00:00:00+00:00

　　get(*args, **kwargs)#接受各种时间并转换为arrow格式

　　

print(arrow.get('2009-09-01T01:34:43'))
# 2009-09-01T01:34:43+00:00
print(arrow.get(datetime(2007,5,12)))
# 2007-05-12T00:00:00+00:00
print(arrow.get(2013,5,5,12,30,45))
# 2013-05-05T12:30:45+00:00
print(arrow.get(date(2013, 5, 5)))
# 2013-05-05T00:00:00+00:00

　　range(frame, start, end=None, tz=None, limit=None) 创建时间范围

start1 = datetime(2018,5,5,12,30)
end1 = datetime(2018,5,5,17,15)
for i in arrow.Arrow.range('hour', start1,end1):
    print(repr(i))
# <Arrow [2018-05-05T12:30:00+00:00]>
# <Arrow [2018-05-05T13:30:00+00:00]>
# <Arrow [2018-05-05T14:30:00+00:00]>
# <Arrow [2018-05-05T15:30:00+00:00]>
# <Arrow [2018-05-05T16:30:00+00:00]>

修改时间

　　replace(**kwargs) 替换某个时间区域

atim = arrow.utcnow()
print(atim)
# 2018-03-08T15:42:30.435938+00:00
print(atim.replace(year=2012,month=6))
# 2012-06-08T15:42:30.435938+00:00

　　shift(**kwargs) 移动时间

print(atim.shift(years=10,months=-2))
# 2028-01-08T15:43:57.632305+00:00

格式化参数

Year            YYYY    　　2000, 2001, 2002 ... 2012, 2013
                 YY        00, 01, 02 ... 12, 13
Month            MMMM    　 January, February, March ... [1]
                 MMM        Jan, Feb, Mar ... [1]
                 MM         01, 02, 03 ... 11, 12
                 M          1, 2, 3 ... 11, 12
Day of Year      DDDD       001, 002, 003 ... 364, 365
                 DDD        1, 2, 3 ... 4, 5
Day of Month     DD         01, 02, 03 ... 30, 31
                 D          1, 2, 3 ... 30, 31
                 Do         1st, 2nd, 3rd ... 30th, 31st
Day of Week      dddd       Monday, Tuesday, Wednesday ... [2]
                 ddd        Mon, Tue, Wed ... [2]
                 d          1, 2, 3 ... 6, 7
Hour             HH         00, 01, 02 ... 23, 24
                 H          0, 1, 2 ... 23, 24
                 hh         01, 02, 03 ... 11, 12
                 h          1, 2, 3 ... 11, 12
AM / PM          A          AM, PM, am, pm [1]
                 a          am, pm [1]
Minute           mm         00, 01, 02 ... 58, 59
                 m          0, 1, 2 ... 58, 59
Second           ss         00, 01, 02 ... 58, 59
                 s          0, 1, 2 ... 58, 59
Sub-second       S...       0, 02, 003, 000006, 123123123123... [3]
Timezone         ZZZ        Asia/Baku, Europe/Warsaw, GMT ... [4]
                 ZZ         -07:00, -06:00 ... +06:00, +07:00
                 Z          -0700, -0600 ... +0600, +0700
Timestamp        X          1381685817