help on python regular expression named group

wxjmfauth at gmail.com wxjmfauth at gmail.com
Wed Jul 17 08:15:59 CEST 2013


Le mardi 16 juillet 2013 08:55:58 UTC+2, Mohan L a écrit :
> Dear All,
> 
> 
> 
> Here is my script :
> 
> 
> 
> #!/usr/bin/python
> 
> 
> import re
> 
> 
> 
> 
> # A string.
> logs = "date=2012-11-28 time=21:14:59"
> 
> 
> 
> # Match with named groups.
> m = re.match("(?P<datetime>(date=(?P<date>[^\s]+))\s+(time=(?P<time>[^\s]+)))", logs)
> 
> 
> 
> # print
> 
> 
> print m.groupdict()
> 
> 
> Output: 
> 
> ========
> 
> 
> {'date': '2012-11-28', 'datetime': 'date=2012-11-28 time=21:14:59', 'time': '21:14:59'}
> 
> 
> 
> 
> 
> Required output :
> 
> ==================
> 
> 
> {'date': '2012-11-28', 'datetime': '2012-11-28 21:14:59', 'time': '21:14:59'}
> 
> 
> 
> need help to correct the below regex 
> 
> 
> 
> 
> 
> (?P<datetime>(date=(?P<date>[^\s]+))\s+(time=(?P<time>[^\s]+)))"
> 
> 
> 
> 
> so that It will have : 'datetime': '2012-11-28 21:14:59' instead of 'datetime': 'date=2012-11-28 time=21:14:59'
> 
> 
> 
> 
> any help would be greatly appreciated
> 
> 
> 
> Thanks
> Mohan L

------

Not sure, I'm correct. I took you precise string to
refresh my memory.

>>> import re
>>> tmp = 'date=\d{4}-\d{2}-\d{2}'
>>> DatePattern = '(?P<DATEPATTERN>' + tmp + ')'
>>> tmp = 'time=\d{2}:\d{2}:\d{2}'
>>> TimePattern = '(?P<TIMEPATTERN>' + tmp + ')'
>>> pattern = DatePattern + ' ' + TimePattern
>>> pattern
'(?P<DATEPATTERN>date=\\d{4}-\\d{2}-\\d{2}) (?P<TIMEPATTERN>time=\\d{2}:\\d{2}:\\d{2})'
>>> CompiledPattern = re.compile(pattern)
>>> s = 'date=2012-11-28 time=21:14:59'
>>> mo = CompiledPattern.search(s)
>>> print(mo)
<_sre.SRE_Match object at 0x02CD4188>
>>> print(mo.groups())
('date=2012-11-28', 'time=21:14:59')
>>> print(mo.groupdict())
{'DATEPATTERN': 'date=2012-11-28', 'TIMEPATTERN': 'time=21:14:59'}
>>> print(mo.group(1), mo.group('DATEPATTERN'))
date=2012-11-28 date=2012-11-28
>>> print(mo.group(2), mo.group('TIMEPATTERN'))
time=21:14:59 time=21:14:59
>>>


jmf




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