Python script for searching variable strings between two constant strings

[ddream.merchantt at gmail.com]

import re

infile = open('document.txt','r')
outfile= open('output.txt','w')
copy = False
for line in infile:

    if line.strip() == "--operation():":
        bucket = []
        copy = True

    elif line.strip() == "StartOperation":
        for strings in bucket:
            outfile.write( strings + ',')
        for strings in bucket:
            outfile.write('\n')
        copy = False

    elif copy:
        bucket.append(line.strip()
--------------------------------------

CSV format is like this:
id,          name,                poid,         error
5896, AutoAuthOSUserSubmit,     900105270,      0x4002

My log file has several sections starting with ==== START ==== and ending with ==== END   ====. I want to extract the string between --operation(): and StartOperation. For example, AutoAuthOSUserSubmit. I also want to extract the poid value from line poid: 900105270, poidLen: 9. Finally, I want to extract the return value, e.g 0x4002 if Roll back all updates is found after it. 

I am not even able to extract point the original text if Start and End are not on the same line. How do I go about doing that?

This is a sample LOG extract with two paragraphs:
-- 08/24 02:07:56 [mds.ecas(5896) ECAS_CP1] **==== START ====**
open file /ecas/public/onsite-be/config/timer.conf failed
INFO 08/24/16 02:07:56  salt1be-d1-ap(**5896**/0)  main.c(780*****):--operation(): AutoAuthOSUserSubmit. StartOperation*****
INFO 08/24/16 02:07:56  salt1be-d1-ap(5896/0)  main.c(784):--Client Information: Request from host 'malt-d1-wb' process id 12382.
DEBUG 08/24/16 02:07:56  salt1be-d1-ap(5896/0)  TOci.cc(571):FetchServiceObjects: ServiceCert.sql
DEBUG 08/22/16 23:15:53  pepper1be-d1-ap(2680/0)  vsserviceagent.cpp(517):Generate Certificate 2: c1cd00d5c3de082360a08730fef9cd1d
DEBUG 08/22/16 23:15:53  pepper1be-d1-ap(2680/0)  junk.c(1373):GenerateWebPin : poid: **900105270**, poidLen: 9
DEBUG 08/22/16 23:15:53  pepper1be-d1-ap(2680/0)  junk.c(1408):GenerateWebPin : pinStr 
DEBUG 08/24/16 02:07:56  salt1be-d1-ap(5896/0)  uaadapter_vasco_totp.c(275):UAVascoTOTPImpl.close() -- Releasing Adapter Context
DEBUG 08/22/16 23:15:53  pepper1be-d1-ap(2680/0)  vsenterprise.cpp(288):VSEnterprise::Engage returns 0x4002 - Unknown error code **(0x4002)**
ERROR 08/22/16 23:15:53  pepper1be-d1-ap(2680/0)  vsautoauth.cpp(696):OSAAEndUserEnroll: error occurred. **Roll back** all updates!
INFO 08/24/16 02:07:56  salt1be-d1-ap(5896/0)  uaotptokenstoreqmimpl.cpp(199):Close token store
INFO 08/24/16 02:07:56  salt1be-d1-ap(5896/0)  main.c(990):-- EndOperation
-- 08/24 02:07:56 [mds.ecas(5896) ECAS_CP1] **==== END   ====**
    OPERATION = AutoAuthOSUserSubmit, rc = 0x0 (0)
    SYSINFO Elapse = 0.687, Heap = 1334K, Stack = 64K