Groups | Search | Server Info | Keyboard shortcuts | Login | Register [http] [https] [nntp] [nntps]

Groups > comp.lang.python > #45450

Re: Number of cells, using CSV module

Path csiph.com!v102.xanadu-bbs.net!xanadu-bbs.net!feeder.erje.net!us.feeder.erje.net!news2.arglkargh.de!news.mixmin.net!rt.uk.eu.org!newsfeed.xs4all.nl!newsfeed4.news.xs4all.nl!xs4all!post.news.xs4all.nl!not-for-mail
Return-Path <skip.montanaro@gmail.com>
X-Original-To python-list@python.org
Delivered-To python-list@mail.python.org
X-Spam-Status OK 0.006
X-Spam-Evidence '*H*': 0.99; '*S*': 0.00; 'memory.': 0.07; 'subject:Number': 0.09; 'subject:module': 0.09; 'subject:using': 0.09; 'cc:addr:python-list': 0.11; 'csv': 0.16; 'from:addr:pobox.com': 0.16; 'from:addr:skip': 0.16; 'subject:CSV': 0.16; 'sender:addr:gmail.com': 0.17; 'cc:addr:python.org': 0.22; 'skip': 0.24; 'cc:2**0': 0.24; 'cc:no real name:2**0': 0.24; 'header:In-Reply-To:1': 0.27; 'message- id:@mail.gmail.com': 0.30; 'work.': 0.31; 'gives': 0.31; 'loading': 0.31; 'wind': 0.31; 'file': 0.32; 'received:google.com': 0.35; 'should': 0.36; 'error.': 0.37; 'entire': 0.61; "you'll": 0.62; 'to:addr:gmail.com': 0.65
DKIM-Signature v=1; a=rsa-sha256; c=relaxed/relaxed; d=gmail.com; s=20120113; h=mime-version:x-received:sender:in-reply-to:references:date :x-google-sender-auth:message-id:subject:from:to:cc:content-type; bh=93qoeUilfhzBXKikMrxpOhIsMuVZwNL0Uy4RhoZjX8U=; b=QXTysKiwzyF5qiKpYIaos2jKdpxiVJFnnVC49kvbFtgAOxebYNFJeBJ9Ra0YAdGASX PEJtMBUonzPoyd+lF0CbIfp/BiJ8f7s6S712V5COIz9b01qT+5HOVzliAOAqlY49/k50 HJpK2fYVkMHhGKzCOmIahBltnv80KrLk14Q1sfFcMTnST+rq46df4NZK+CBrmti/U38r Nf8PlFXFAyH1AN3AbWEOs/gGnvTUPMiytucCl2x3txvNoRpbz3rAfRbeSd2zP3ZWZ52P NbbkeD0Ss5cynrwl9OAJdWVRbKsqoIGVbjDMaJiuqQS6RL+Iy4TOZ+Fd4E9zeEaOdYDb dWvw==
MIME-Version 1.0
X-Received by 10.50.176.166 with SMTP id cj6mr10632970igc.56.1368731269427; Thu, 16 May 2013 12:07:49 -0700 (PDT)
Sender skip.montanaro@gmail.com
In-Reply-To <8662be9c-e50c-48e9-86dc-1838c6188d0c@googlegroups.com>
References <5f4aec0e-5cfa-445f-af50-67cca7caae36@googlegroups.com> <mailman.1769.1368729617.3114.python-list@python.org> <8662be9c-e50c-48e9-86dc-1838c6188d0c@googlegroups.com>
Date Thu, 16 May 2013 14:07:49 -0500
X-Google-Sender-Auth O_ArLQLnyq0cmyjtUSHc-xkkf0c
Subject Re: Number of cells, using CSV module
From Skip Montanaro <skip@pobox.com>
To tunacubes@gmail.com
Content-Type text/plain; charset=UTF-8
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 <python-list.python.org>
List-Unsubscribe <http://mail.python.org/mailman/options/python-list>, <mailto:python-list-request@python.org?subject=unsubscribe>
List-Archive <http://mail.python.org/pipermail/python-list/>
List-Post <mailto:python-list@python.org>
List-Help <mailto:python-list-request@python.org?subject=help>
List-Subscribe <http://mail.python.org/mailman/listinfo/python-list>, <mailto:python-list-request@python.org?subject=subscribe>
Newsgroups comp.lang.python
Message-ID <mailman.1770.1368731278.3114.python-list@python.org> (permalink)
Lines 11
NNTP-Posting-Host 2001:888:2000:d::a6
X-Trace 1368731278 news.xs4all.nl 15882 [2001:888:2000:d::a6]:52572
X-Complaints-To abuse@xs4all.nl
Xref csiph.com comp.lang.python:45450

Show key headers only | View raw

> len(reader) gives me an error.

Apologies.  len(list(reader)) should work.  Of course, you'll wind up
loading the entire CSV file into memory.  You might want to just count
row-by-row:

n = 0
for row in reader:
    n += 1

Skip

Back to comp.lang.python | Previous | Next — Previous in thread | Next in thread | Find similar | Unroll thread

Thread

Number of cells, using CSV module tunacubes@gmail.com - 2013-05-16 11:29 -0700
  Re: Number of cells, using CSV module Skip Montanaro <skip@pobox.com> - 2013-05-16 13:40 -0500
    Re: Number of cells, using CSV module tunacubes@gmail.com - 2013-05-16 11:50 -0700
      Re: Number of cells, using CSV module Skip Montanaro <skip@pobox.com> - 2013-05-16 14:07 -0500
      Re: Number of cells, using CSV module Tim Chase <python.list@tim.thechases.com> - 2013-05-16 15:00 -0500
  Re: Number of cells, using CSV module tunacubes@gmail.com - 2013-05-16 11:53 -0700
    Re: Number of cells, using CSV module Skip Montanaro <skip@pobox.com> - 2013-05-16 14:08 -0500
    Re: Number of cells, using CSV module Tim Chase <python.list@tim.thechases.com> - 2013-05-16 15:01 -0500
  Re: Number of cells, using CSV module tunacubes@gmail.com - 2013-05-16 13:11 -0700

csiph-web