python将日期时间格式的字符串转换为秒
我正在尝试将日期字符串解码为新纪元,但是我很难获取时区。这是Amazon S3密钥的最后修改日期。
I am trying to decode a date string to epoch but I have difficulties getting the timezone. This is the last modified date from Amazon S3 keys.
time.strptime(key.last_modified, '%Y-%m-%dT%H:%M:%S.%Z')
ValueError: time data u'2013-10-20T00:41:32.000Z'
does not match format '%Y-%m-%dT%H:%M:%S.%Z'
如果我摆脱工作的时区(.000Z),但我也需要时区。
If I get rid of the timezone (.000Z) it works, but I need the timezone as well.
.000Z
不被识别为时区偏移量。实际上,您有毫秒和一个时区( Z
是UTC),并且正式, time.strptime()
解析器无法处理毫秒。在某些平台上,%f
将解析微秒部分,然后丢弃信息。
The .000Z
is not recognized as a timezone offset. In fact, you have milliseconds and a timezone (Z
is UTC), and officially, time.strptime()
parser cannot handle milliseconds. On some platforms %f
will parse the microsecond portion, then discard the information.
datetime.datetime.strptime()
类方法,但是,可以,但不是时区;将 Z
解析为文字,它可以正常工作:
The datetime.datetime.strptime()
class method, however, can, but not the timezone, however; parse the Z
as a literal and it works:
from datetime import datetime
datetime.strptime(key.last_modified, '%Y-%m-%dT%H:%M:%S.%fZ')
演示:
>>> from datetime import datetime
>>> import time
>>> example = u'2013-10-20T00:41:32.000Z'
>>> datetime.strptime(example, '%Y-%m-%dT%H:%M:%S.%fZ')
datetime.datetime(2013, 10, 20, 0, 41, 32)
>>> time.strptime(example, '%Y-%m-%dT%H:%M:%S.%fZ')
time.struct_time(tm_year=2013, tm_mon=10, tm_mday=20, tm_hour=0, tm_min=41, tm_sec=32, tm_wday=6, tm_yday=293, tm_isdst=-1)
请注意,在我的Mac OS X笔记本电脑上,%f
适用于 time.strptime()
;
Note that on my Mac OS X laptop, %f
works for time.strptime()
; it is not guaranteed to work everywhere, however.
将 datetime.datetime()
对象转换为时间元组可以使用 datetime.timetuple( )
方法。
Converting a datetime.datetime()
object to a time tuple can be done with the datetime.timetuple()
method.