Path: csiph.com!v102.xanadu-bbs.net!xanadu-bbs.net!news.albasani.net!newsfeed.freenet.ag!news2.euro.net!newsgate.cistron.nl!newsgate.news.xs4all.nl!post.news.xs4all.nl!not-for-mail Return-Path: X-Original-To: python-list@python.org Delivered-To: python-list@mail.python.org X-Spam-Status: OK 0.002 X-Spam-Evidence: '*H*': 1.00; '*S*': 0.00; 'detect': 0.07; 'json': 0.07; 'lines,': 0.07; 'subject:file': 0.07; 'subject:two': 0.07; 'subject:using': 0.09; 'cc:addr:python-list': 0.11; 'stored': 0.12; 'changes': 0.15; 'sorting': 0.16; 'subject:compare': 0.16; 'to:addr:pearwood.info': 0.16; 'to:addr:steve+comp.lang.python': 0.16; "to:name:steven d'aprano": 0.16; 'unordered': 0.16; 'unordered,': 0.16; 'subject:python': 0.16; 'wrote:': 0.18; 'file,': 0.19; 'value.': 0.19; 'cc:addr:python.org': 0.22; 'text,': 0.24; 'mon,': 0.24; 'cc:2**0': 0.24; 'cc:no real name:2**0': 0.24; '>': 0.26; 'compare': 0.26; 'header:In-Reply- To:1': 0.27; 'idea': 0.28; 'correct': 0.29; 'am,': 0.29; 'message- id:@mail.gmail.com': 0.30; 'url:mailman': 0.30; 'gives': 0.31; '-0700,': 0.31; "d'aprano": 0.31; 'steven': 0.31; 'url:python': 0.33; 'checking': 0.33; 'but': 0.35; 'received:google.com': 0.35; 'there': 0.35; 'data,': 0.36; 'library.': 0.36; 'skip:j 20': 0.36; 'url:listinfo': 0.36; 'thanks': 0.36; 'subject:?': 0.36; 'url:org': 0.36; 'wrong': 0.37; 'url:library': 0.38; 'url:mail': 0.40; 'how': 0.40; 'blank': 0.60; 'new': 0.61; 'hand,': 0.93; 'lot,': 0.93; 'yourself,': 0.95; '2013': 0.98 DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=gmail.com; s=20120113; h=mime-version:in-reply-to:references:date:message-id:subject:from:to :cc:content-type; bh=sOgGX/vsTzPQwMVFWyUgXnZrybHYY82KyHaad1xbqPU=; b=wtvtS/1D6PapuxtBpa2PAbQ++fV00Lin43miSMZN40+9QWg9quS6dEwE4eO30Ba9eo czMKJD/gA96r5STcpd+hfH+ey1WBODCn+1jdvVYAAvPZ1IIlxVzBD1kiEPN8jCgXafOL nG498e0eOO/91siDf/KnBjULMKGOKFTaMp53g7owvg5dB6aE8tCGSw2kzRmNP/cvvxZk T6bZ0wU3lSGuH1g+yWsRY/eg9paTK/DJwLqwQ0gMGjHmHYYb8PvulqZoOlbGu514hPlA rgZJF025skaDSemV4O3qPAWyx6x9cVoxCSK9Bylg6KJ9E7twdgLEdOSqxYq+OU5FhAun Emtw== MIME-Version: 1.0 X-Received: by 10.50.176.164 with SMTP id cj4mr4312713igc.66.1369636122933; Sun, 26 May 2013 23:28:42 -0700 (PDT) In-Reply-To: <51a2f016$0$1744$c3e8da3$76491128@news.astraweb.com> References: <355f934e-bda0-4316-96bb-583c498ecb1a@googlegroups.com> <51a2f016$0$1744$c3e8da3$76491128@news.astraweb.com> Date: Mon, 27 May 2013 11:58:42 +0530 Subject: Re: how to compare two json file line by line using python? From: Avnesh Shakya To: "Steven D'Aprano" Content-Type: multipart/alternative; boundary=089e0111d68494425304ddad4247 Cc: python-list@python.org X-BeenThere: python-list@python.org X-Mailman-Version: 2.1.15 Precedence: list List-Id: General discussion list for the Python programming language List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Newsgroups: comp.lang.python Message-ID: Lines: 105 NNTP-Posting-Host: 2001:888:2000:d::a6 X-Trace: 1369636125 news.xs4all.nl 15894 [2001:888:2000:d::a6]:39959 X-Complaints-To: abuse@xs4all.nl Xref: csiph.com comp.lang.python:46174 --089e0111d68494425304ddad4247 Content-Type: text/plain; charset=ISO-8859-1 Thanks a lot, I got it. On Mon, May 27, 2013 at 11:03 AM, Steven D'Aprano < steve+comp.lang.python@pearwood.info> wrote: > On Sun, 26 May 2013 21:32:40 -0700, Avnesh Shakya wrote: > > > But I want to compare line by line and value by value. but i found that > > json data is unordered data, so how can i compare them without sorting > > it. please give me some idea about it. I am new for it. I want to check > > every value line by line. > > Why do you care about checking every value line by line? As you say > yourself, JSON data is unordered, so "line by line" is the wrong way to > compare it. > > > The right way is to decode the JSON data, and then compare whether it > gives you the result you expect: > > a = json.load("file-a") > b = json.load("file-b") > if a == b: > print("file-a and file-b contain the same JSON data") > > If what you care about is the *data* stored in the JSON file, this is the > correct way to check it. > > On the other hand, if you don't care about the data, but you want to > detect changes to whitespace, blank lines, or other changes that make no > difference to the JSON data, then there is no need to care that this is > JSON data. Just treat it as text, and use the difflib library. > > http://docs.python.org/2/library/difflib.html > > > -- > Steven > -- > http://mail.python.org/mailman/listinfo/python-list > --089e0111d68494425304ddad4247 Content-Type: text/html; charset=ISO-8859-1 Content-Transfer-Encoding: quoted-printable
Thanks a lot, I got it.


On Mon, May 27, 2013 at 11:03 AM, Stev= en D'Aprano <steve+comp.lang.python@pearwood.info> wrote:
On Sun, 26 May 2013 21:32:= 40 -0700, Avnesh Shakya wrote:

> But I want to compare line by line and value by value. but i found tha= t
> json data is unordered data, so how can i compare them without sorting=
> it. please give me some idea about it. I am new for it. I want to chec= k
> every value line by line.

Why do you care about checking every value line by line? As you say yourself, JSON data is unordered, so "line by line" is the wrong = way to
compare it.


The right way is to decode the JSON data, and then compare whether it
gives you the result you expect:

a =3D json.load("file-a")
b =3D json.load("file-b")
if a =3D=3D b:
=A0 =A0 print("file-a and file-b contain the same JSON data")

If what you care about is the *data* stored in the JSON file, this is the correct way to check it.

On the other hand, if you don't care about the data, but you want to detect changes to whitespace, blank lines, or other changes that make no difference to the JSON data, then there is no need to care that this is
JSON data. Just treat it as text, and use the difflib library.

http://docs.python.org/2/library/difflib.html


--
Steven
--
http://mail.python.org/mailman/listinfo/python-list

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