hold the phone!!!!
I have no idea why it worked, would love an explanation, but I changed my
previous test script by eliminating
for tag in ("icdm"):
and changing
if tag in line
to
if 'icdm' in line:
and it works perfectly! It only iterates over the file once, and the else
executes so both types of lines format correctly except for the multiple
identifiers in the non-icdm lines
I could still use some help with that bit, please.
regards, Richard
On Wed, Jun 3, 2015 at 4:13 PM, richard kappler <richkapp...@gmail.com>
wrote:
> I was trying to keep it simple, you'd think by now I'd know better. My
> fault and my apology.
>
> It's definitely not all dates and times, the data and character types
> vary. This is the output from my log parser script which you helped on the
> other day. there are essentially two types of line:
>
> Tue Jun 2 10:22:42 2015<usertag1
> name="SE">SE201506012200310389PS01CT1407166S0011.40009.00007.6IN
> 000000000018.1LB000258]C10259612019466862270088094]L0223PDF</usertag1>
> Tue Jun 2 10:22:43 2015<usertag1
> name="SE">SE0389icdim01307755C0038.20033.20012.0IN1000000000
> 0032]C10259612804038813568089577</usertag1>
>
> I have to do several things:
> the first type can be of variable length, everything after the ] is an
> identifier that I have to separate, some lines have one, some have more
> than one, variable length, always delimited by a ]
> the second type (line 2) doesn't have the internal datetime stamp, so I
> just need to add 14 x's to fill in the space where that date time stamp
> would be.
>
> and finally, I have to break these apart and put a descriptor with each.
>
> While I was waiting for a response to this, I put together a script to
> start figuring things out (what could possibly go wrong?!?!?! :-) )
>
> and I can't post the exact script but the following is the guts of it:
>
> f1 = open('unformatted.log', 'r')
> f2 = open('formatted.log', 'a')
>
> for line in f1:
> for tag in ("icdm"):
> if tag in line:
> newline = 'log datestamp:' + line[0:24] # + and so on to
> format the lines with icdm in them including adding 14 x's for the missing
> timestamp
> f2.write(newline) #write the formatted output to the new log
> else:
> newline = 'log datestamp:' + line[0:24] # + and so on to
> format the non-icdm lines
> f2.write(newline)
>
> The problems are:
> 1. for some reason this iterates over the 24 line file 5 times, and it
> writes the 14 x's to every file, so my non-icdm code (the else:) isn't
> getting executed. I'm missing something basic and obvious but have no idea
> what.
> 2. I still don't know how to handle the differences in the end of the
> non-icdm files (potentially more than identifier ] delimited as described
> above).
>
> regards, Richard
>
> On Wed, Jun 3, 2015 at 3:53 PM, Alan Gauld <alan.ga...@btinternet.com>
> wrote:
>
>> On 03/06/15 20:10, richard kappler wrote:
>>
>>> for formatting a string and adding descriptors:
>>>
>>> test = 'datetimepart1part2part3the_rest'
>>>
>>
>> If this is really about parsing dates and times have
>> you looked at the datetime module and its parsing/formatting
>> functions (ie strptime/strftime)?
>>
>> Can I stop using position numbers and start looking for specific
>>> characters
>>> (the delimiter) and proceed to the end (which is always a constant
>>> string
>>> btw).
>>>
>>
>> The general answer is probably to look at regular expressions.
>> But they get messy fast so usually I'd suggest trying regular
>> string searches/replaces and splits first.
>>
>> But if your pattern is genuinely complex and variable then
>> regex may be the right solution.
>>
>> But if its dates check the strptime() functions first.
>>
>>
>> --
>> Alan G
>> Author of the Learn to Program web site
>> http://www.alan-g.me.uk/
>> http://www.amazon.com/author/alan_gauld
>> Follow my photo-blog on Flickr at:
>> http://www.flickr.com/photos/alangauldphotos
>>
>>
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>
>
>
> --
>
> Windows assumes you are an idiot…Linux demands proof.
>
--
Windows assumes you are an idiot…Linux demands proof.
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