Hi Cameron.
str_output= """
MOD1 memory : 2 valid 1790 free
MOD2 memory : 128 valid 128 free
UDP Aware MEMR : 0 valid 0 free
*MEMR* : 21 valid 491 free
Feature XYZ : 3 valid 13 free
Feature PQR : 0 valid 16 free
Feature MNO : 0 valid 2 free
"""
pattern = re.findall(r'MEMR\s+\:\s+([0-9]+)\s+valid \s+([0-9]+)\s+free ',
str_output)
it produce fallowing output::
[('0', '0'), ('21', '491')]
[('21' ,'491')] <<<<< how to achieve this output using *"findall with
single line code"*?
NOTE "MEMR" values are 0 or more then 0 valid/free values
Thanks,
Iranna
On Fri, Mar 30, 2018 at 12:43 PM, Cameron Simpson <c...@cskk.id.au> wrote:
> On 30Mar2018 11:46, Iranna Mathapati <iranna.gan...@gmail.com> wrote:
>
>> how to achieve fallowing expected output?
>>
>> str_output= """
>>
>> MOD1 memory : 2 valid 1790 free
>> MOD2 memory : 128 valid 128 free
>> UDP Aware *MEMR* : 0 valid 0 free *MEMR
>> : 21 valid 491 free
>> <<<<<expecting *
>> Feature XYZ : 3 valid 13 free
>> Feature PQR : 0 valid 16 free
>> Feature MNO : 0 valid 2 free
>>
>> """
>>
>> i am going to grep MEM values alone and i have tried fallowing Regex:
>>
>> re.findall(r'MEMR\s+\:\s+([0-9]+)\s+valid \s+([0-9]+)\s+free ',
>> str_output)
>>
>> it produce fallowing output::
>> [('0', '0'), ('21', '491')]
>>
>> Expected output and i am expecting fallowing output::
>> *[('21' ,'491')] <<<<< how to achieve this output?*
>>
>
> I get an empty list with your str_output text. Is it intact above? Or
> modified by the mail program?
>
> That said, I see that your regexp ends with "free ". Are you sure there is
> a space after the word "free" in your input data? There doesn't seems to be
> one in your email. Because your regexp requires a final space, if there
> isn't one in the input then it will not match.
>
> It may be that your original data has this final space, hence your matches.
>
> In which case, there are two "MEMR" words in your input data. Are there
> really asterisks ("*") in the input data? Or are they for emphasis? I ask
> because you've got some lines ending in "::" in your email, which is
> suggestive of some formatting.
>
> So, supposing that the asterisks are not there, you have two "MEMR : N
> valid M free" strings up there. It sounds like you want only the nonzero
> one. Notice that your regexp includes:
>
> [0-9]+
>
> to match 1 or more digits. If you don't want to recognise zero values,
> consider that any such number doesn't commence with a "0" digit. How would
> you modify the regexp above to be more picky?
>
> Cheers,
> Cameron Simpson <c...@cskk.id.au>
>
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