regex - Python error log pattern matching -


i python newbie , want learn hardway. writing function extract content between patterns. log file construct follows

<time-stamp>[begin cache] <...some content> <time-stamp>.  <time-stamp>. <time-stamp>. <time-stamp>. <time-stamp>[error] <..some content> <time-stamp>. <time-stamp>. <time-stamp>. <time-stamp>. <time-stamp>[end cache] <....some content> <time-stamp>. <time-stamp>. <time-stamp>. <time-stamp>[begin cache] <... content> <time-stamp>. <time-stamp>. <time-stamp>. <time-stamp>[end cache] <... content>

i interested in extracting part between begin cache , end cache if there pattern error between them. code have written far no way getting me goal. logic used find positions of begin cache pattern , end cache pattern if error tag present , print file between positions. appreciated.

import re import os import mmap file="\\\\xxxxx\c$\ego\soam\work\xxxx_20140307.03\dal_xxxx_yyyy_20140320_110536_21_6508.log" open(file,"r") file:     m=mmap.mmap(file.fileno(),0,access=mmap.access_read)     mpattern="\[error\]"     spattern="begin cache"     epattern="end cache"     mregexp=re.compile(mpattern)     sregexp=re.compile(spattern)     eregexp=re.compile(epattern)     match in sregexp.finditer(m):         epos=eregexp.match(m,match.end())         if mregexp.match(m,match.end(),epos):             print("%s"%(m,match.start(),epos))

i wish have tutorials fast start incredibly simple yet confusing language.

you can scan log file [error] , text needed regex used split data read logfile. suggest example method:

edit after data format changed:

use regex : \[[^r]\w+\s\w+\] split list , view error part in example:

import re f = open('logfile', 'r') data = f.read() f.close() mylist = re.split(r'\[[^r]\w+\s\w+\]',data) item in mylist:     if '[error]' in item:         print item

edit:

some places learn more python:

learnpython.org

python.org/tutorial

sthurlow.com/python

hope helped.


Comments

Post a Comment

Popular posts from this blog

android - Get AccessToken using signpost OAuth without opening a browser (Two legged Oauth) -

i using signpost oauth access data magento server. have read various tutorials on same , reach point open browser user can enter credentials. however, per requirement have automate part. hence, user should not browser page. have set-up done on server side ( magento ), hit url , returned call page. same through program in android. i have tried below, consumer = new commonshttpoauthconsumer(key, secret); provider = new commonshttpoauthprovider(oauth_init_url,access_token_url, authorize_url); try { provider.retrieverequesttoken(consumer, oauth.out_of_band); log.d("tokens" , consumer.gettoken() + " -- " + consumer.gettokensecret()); } and request tokens. dont know how bypass next step. tried directly accessing accesstoken (stupid of me) provider.retrieveaccesstoken(consumer, "mycallback://callback"); no luck, ends in oauth.signpost.exception.oauthnotauthorizedexception: authorization failed (server replied 401). ...
Read more

org.mockito.exceptions.misusing.InvalidUseOfMatchersException: mockito -

getting error org.mockito.exceptions.misusing.invaliduseofmatchersexception: invalid use of argument matchers! 1 matchers expected, 2 recorded. exception may occur if matchers combined raw values: //incorrect: somemethod(anyobject(), "raw string"); when using matchers, arguments have provided matchers. example: //correct: somemethod(anyobject(), eq("string matcher")); at when( getprogramservice .callservice(any(getprogramtype.class))) .thenreturn(jaxbresponse); please explain error , possible resolution the code posted looks fine; don't see problem it. code before or above causing exception. key here: invalid use of argument matchers! 1 matchers expected, 2 recorded. any , used above, doesn't return "special kind of null" or "special kind of getprogramtype"; don't exist. instead, returns null , side effect puts matcher on stack. whe...
Read more

google shop client API returns 400 bad request error while adding an item -

i'm working on solution add items in google shopping market java application. following tutorial real mess because of missing classes of laste release, after setting 1.5-beta maven managed make base example typecheck correctly classes. still can make simple task of adding 1 item. instead of posting whole code i'm posting part creates product feed. private product createproduct(string id) { product product = new product(); product.title = "red wool sweater"; product.content = new content( "text", "comfortable , soft, sweater keep warm on " + "cold winter nights. red , blue stripes."); product.appcontrol = new appcontrol(); product.appcontrol.addrequireddestination("productads"); product.externalid = id; product.lang = "it"; product.country = "it"; product.condition = "nuovo"; product.price = new price("eu...
Read more