How can I add space in to several numbers?

Gabriel Genellina gagsl-py2 at yahoo.com.ar
Mon Mar 2 22:23:27 CET 2009


En Mon, 02 Mar 2009 19:08:04 -0200, MRAB <google at mrabarnett.plus.com>  
escribió:
> Gabriel Genellina wrote:
>> En Mon, 02 Mar 2009 17:58:01 -0200, Bo Zhang <primrosebo33 at gmail.com>  
>> escribió:
>>
>>> I want to parse a file and do this :
>>>
>>>     A  74.335 -86.474-129.317  1.00 54.12
>>>
>>> then add space between -86.474 and -129.317. I can get the file with
>>>
>>>     A  74.335 -86.474 -129.317  1.00 54.12
>>  Use a regular expression:
>>  py> import re
>> py> line = "A  74.335 -86.474-129.317  1.00 54.12"
>> py> re.sub(r"(\d)-(\d)", r"\1 -\2", line)
>> 'A  74.335 -86.474 -129.317  1.00 54.12'
>>  You many require r"(\d)-([\d\.])" if a number is allowed to start with  
>> a decimal point.
>>
> It probably doesn't matter what comes after the '-':
>
>      re.sub(r"(\d)-", r"\1 -", line)

Yes, that's better.

-- 
Gabriel Genellina




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