[Tutor] how to track an entry in a large text file

[Mitya Sirenef]

On 01/16/2013 04:22 PM, 3n2 Solutions wrote:
> Say I have a text file (example below) that has multiple records with
> the same format but not always the same number of lines.  Each record
> is separated by the line that starts with “Examining file” as in below
> example. If you notice, the 3D Val is not there for the second record.
> How do I report that the “3D Val” is not present for that particular
> record “8866W2310089.txt”?
> Thanks to Alan for his reply.
>
>
>
> Examining file: 5521W2310000.txt
>
> Duration                 :      0h : 59m
> First meas : week   :  86     :   1721
> Last  meas : week   :  89     :   1721
>
> Min val           :     15
> Max val         :     18
> 3D             :   3600  100.0%
>
> summary         Total  Missed    Rate
> epoch1                :        1378       0       0\1000
> epoch2                :        2154       1       0\1000
>
>
>
> Examining file: 8866W2310089.txt
>
> Duration                 :      0h : 59m
> First meas : week   :  87     :   1721
> Last  meas : week   :  84     :   1721
>
> Min val           :     16
> Max val         :     19
>
> summary         Total  Missed    Rate
> epoch1                :        1378       0       0\1000
> epoch
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If the file isn't very huge, you can split by "Examining file: ",
then iterate over the list, check if '3D' is in the item; if it
isn't, split the item by newlines and print first line.

HTH,  - mitya

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