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

Groups > comp.lang.python > #109805

Re: how to solve memory

Path csiph.com!fu-berlin.de!uni-berlin.de!not-for-mail
From MRAB <python@mrabarnett.plus.com>
Newsgroups comp.lang.python
Subject Re: how to solve memory
Date Sat, 11 Jun 2016 01:33:54 +0100
Lines 24
Message-ID <mailman.145.1465605243.2306.python-list@python.org> (permalink)
References <4f853aa2-cc00-480b-9fd7-79b05cbd4889@googlegroups.com> <njejs6$ri3$1@reader1.panix.com> <8a1c372e-bd6c-4923-8ae1-8f129ec749e4@googlegroups.com> <njepo0$83e$1@reader1.panix.com> <b2dfb3cb-bc3b-4d97-a3ce-ffa80e0c51f6@googlegroups.com> <f82d995f-17d3-c24c-0610-88e91f540026@mrabarnett.plus.com>
Mime-Version 1.0
Content-Type text/plain; charset=utf-8; format=flowed
Content-Transfer-Encoding 7bit
X-Trace news.uni-berlin.de BLxT9j1Mzo9ZYDy0hUvmNA6DM3WEuFvzb5KTzhsVSPWw==
Return-Path <python@mrabarnett.plus.com>
X-Original-To python-list@python.org
Delivered-To python-list@mail.python.org
X-Spam-Status OK 0.007
X-Spam-Evidence '*H*': 0.99; '*S*': 0.00; 'list?': 0.07; "'b'": 0.16; 'combinations': 0.16; 'from:addr:mrabarnett.plus.com': 0.16; 'from:addr:python': 0.16; 'from:name:mrab': 0.16; 'message- id:@mrabarnett.plus.com': 0.16; 'received:192.168.1.4': 0.16; 'received:84.93': 0.16; 'received:84.93.230': 0.16; 'received:io': 0.16; 'received:psf.io': 0.16; 'wrote:': 0.16; 'memory': 0.17; 'code,': 0.23; 'header:In-Reply-To:1': 0.24; 'header:User- Agent:1': 0.26; 'correct': 0.28; 'indentation': 0.29; 'received:84': 0.32; 'statement': 0.32; 'items.': 0.33; 'add': 0.34; 'list': 0.34; 'quite': 0.35; 'skip:i 20': 0.36; 'there': 0.36; 'to:addr:python-list': 0.36; 'subject:: ': 0.37; 'sure': 0.39; 'received:192': 0.39; 'to:addr:python.org': 0.40; 'where': 0.40; 'still': 0.40; "you'll": 0.61
X-CM-Score 0.00
X-CNFS-Analysis v=2.1 cv=bsGxfxui c=1 sm=1 tr=0 a=0nF1XD0wxitMEM03M9B4ZQ==:117 a=0nF1XD0wxitMEM03M9B4ZQ==:17 a=L9H7d07YOLsA:10 a=9cW_t1CCXrUA:10 a=s5jvgZ67dGcA:10 a=IkcTkHD0fZMA:10 a=torLUKblTbsdRXkHehsA:9 a=QEXdDO2ut3YA:10
X-AUTH mrabarnett@:2500
User-Agent Mozilla/5.0 (Windows NT 10.0; WOW64; rv:45.0) Gecko/20100101 Thunderbird/45.1.1
In-Reply-To <b2dfb3cb-bc3b-4d97-a3ce-ffa80e0c51f6@googlegroups.com>
X-BeenThere python-list@python.org
X-Mailman-Version 2.1.22
Precedence list
List-Id General discussion list for the Python programming language <python-list.python.org>
List-Unsubscribe <https://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 <https://mail.python.org/mailman/listinfo/python-list>, <mailto:python-list-request@python.org?subject=subscribe>
X-Mailman-Original-Message-ID <f82d995f-17d3-c24c-0610-88e91f540026@mrabarnett.plus.com>
X-Mailman-Original-References <4f853aa2-cc00-480b-9fd7-79b05cbd4889@googlegroups.com> <njejs6$ri3$1@reader1.panix.com> <8a1c372e-bd6c-4923-8ae1-8f129ec749e4@googlegroups.com> <njepo0$83e$1@reader1.panix.com> <b2dfb3cb-bc3b-4d97-a3ce-ffa80e0c51f6@googlegroups.com>
Xref csiph.com comp.lang.python:109805

Show key headers only | View raw

On 2016-06-11 00:31, meInvent bbird wrote:
> it is quite ridiculous,
> this time i am sure that i put correct indentation
> and add a else statement to make sure recursive call inside the
> if statement , it still memory error,
>
> where is the memory error?
>
> is itertools.combinations so big for the list?
>
[snip]

How long is initlist?

When I ran the code, it said over 100_000 items.

How many combinations would there be?

Over 10_000_000_000.

That's how long the list 'b' would be.

You'll need 10s of gigabytes of memory and a lot of patience!

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

Thread

how to solve memory meInvent bbird <jobmattcon@gmail.com> - 2016-06-09 17:58 -0700
  Re: how to solve memory Michael Torrie <torriem@gmail.com> - 2016-06-09 19:12 -0600
    Re: how to solve memory meInvent bbird <jobmattcon@gmail.com> - 2016-06-09 21:59 -0700
  Re: how to solve memory Steven D'Aprano <steve@pearwood.info> - 2016-06-11 00:07 +1000
    Almost crashing computer, was Re: how to solve memory Peter Otten <__peter__@web.de> - 2016-06-10 16:41 +0200
    Re: how to solve memory meInvent bbird <jobmattcon@gmail.com> - 2016-06-10 08:00 -0700
    Re: how to solve memory meInvent bbird <jobmattcon@gmail.com> - 2016-06-10 08:23 -0700
    Re: how to solve memory meInvent bbird <jobmattcon@gmail.com> - 2016-06-10 16:23 -0700
  Re: how to solve memory John Gordon <gordon@panix.com> - 2016-06-10 14:46 +0000
    Re: how to solve memory meInvent bbird <jobmattcon@gmail.com> - 2016-06-10 08:08 -0700
      Re: how to solve memory John Gordon <gordon@panix.com> - 2016-06-10 16:26 +0000
        Re: how to solve memory meInvent bbird <jobmattcon@gmail.com> - 2016-06-10 16:31 -0700
          Re: how to solve memory MRAB <python@mrabarnett.plus.com> - 2016-06-11 01:33 +0100
            Re: how to solve memory meInvent bbird <jobmattcon@gmail.com> - 2016-06-10 21:43 -0700
            Re: how to solve memory meInvent bbird <jobmattcon@gmail.com> - 2016-06-10 22:18 -0700
            Re: how to solve memory meInvent bbird <jobmattcon@gmail.com> - 2016-06-10 22:55 -0700

csiph-web