在Python中解析带有时区缩写名称的日期/时间字符串?

我正在尝试像"Sat, 11/01/09 8:00PM EST"在Python中那样解析时间戳字符串,但是在寻找一种可以处理缩写时区的解决方案时遇到了麻烦。

我正在使用dateutilparse()功能,但无法解析时区。是否有捷径可寻?

回答:

dateutil的parser.parse()接受作为关键字参数tzinfos的类型的字典{'EST': -5*3600}(即,区域名称匹配GMT以秒偏移量)。因此,假设我们有,我们可以这样做:

>>> import dateutil.parser as dp

>>> s = 'Sat, 11/01/09 8:00PM'

>>> for tz_code in ('PST','PDT','MST','MDT','CST','CDT','EST','EDT'):

>>> dt = s+' '+tz_code

>>> print dt, '=', dp.parse(dt, tzinfos=tzd)

Sat, 11/01/09 8:00PM PST = 2009-11-01 20:00:00-08:00

Sat, 11/01/09 8:00PM PDT = 2009-11-01 20:00:00-07:00

Sat, 11/01/09 8:00PM MST = 2009-11-01 20:00:00-07:00

Sat, 11/01/09 8:00PM MDT = 2009-11-01 20:00:00-06:00

Sat, 11/01/09 8:00PM CST = 2009-11-01 20:00:00-06:00

Sat, 11/01/09 8:00PM CDT = 2009-11-01 20:00:00-05:00

Sat, 11/01/09 8:00PM EST = 2009-11-01 20:00:00-05:00

Sat, 11/01/09 8:00PM EDT = 2009-11-01 20:00:00-04:00

关于的内容tzinfos,这是我如何填充我的内容:

tz_str = '''-12 Y

-11 X NUT SST

-10 W CKT HAST HST TAHT TKT

-9 V AKST GAMT GIT HADT HNY

-8 U AKDT CIST HAY HNP PST PT

-7 T HAP HNR MST PDT

-6 S CST EAST GALT HAR HNC MDT

-5 R CDT COT EASST ECT EST ET HAC HNE PET

-4 Q AST BOT CLT COST EDT FKT GYT HAE HNA PYT

-3 P ADT ART BRT CLST FKST GFT HAA PMST PYST SRT UYT WGT

-2 O BRST FNT PMDT UYST WGST

-1 N AZOT CVT EGT

0 Z EGST GMT UTC WET WT

1 A CET DFT WAT WEDT WEST

2 B CAT CEDT CEST EET SAST WAST

3 C EAT EEDT EEST IDT MSK

4 D AMT AZT GET GST KUYT MSD MUT RET SAMT SCT

5 E AMST AQTT AZST HMT MAWT MVT PKT TFT TJT TMT UZT YEKT

6 F ALMT BIOT BTT IOT KGT NOVT OMST YEKST

7 G CXT DAVT HOVT ICT KRAT NOVST OMSST THA WIB

8 H ACT AWST BDT BNT CAST HKT IRKT KRAST MYT PHT SGT ULAT WITA WST

9 I AWDT IRKST JST KST PWT TLT WDT WIT YAKT

10 K AEST ChST PGT VLAT YAKST YAPT

11 L AEDT LHDT MAGT NCT PONT SBT VLAST VUT

12 M ANAST ANAT FJT GILT MAGST MHT NZST PETST PETT TVT WFT

13 FJST NZDT

11.5 NFT

10.5 ACDT LHST

9.5 ACST

6.5 CCT MMT

5.75 NPT

5.5 SLT

4.5 AFT IRDT

3.5 IRST

-2.5 HAT NDT

-3.5 HNT NST NT

-4.5 HLV VET

-9.5 MART MIT'''

tzd = {}

for tz_descr in map(str.split, tz_str.split('\n')):

tz_offset = int(float(tz_descr[0]) * 3600)

for tz_code in tz_descr[1:]:

tzd[tz_code] = tz_offset

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