Path: csiph.com!v102.xanadu-bbs.net!xanadu-bbs.net!eternal-september.org!feeder.eternal-september.org!border1.nntp.ams1.giganews.com!nntp.giganews.com!bcyclone02.am1.xlned.com!bcyclone02.am1.xlned.com!newsfeed.xs4all.nl!newsfeed4.news.xs4all.nl!xs4all!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 0.022 X-Spam-Evidence: '*H*': 0.96; '*S*': 0.00; 'subject:number': 0.07; '1.)': 0.09; 'python': 0.11; 'example:': 0.11; 'instead.': 0.15; '2.)': 0.16; ':-).': 0.16; 'combinations': 0.16; 'pairs': 0.16; 'screen,': 0.16; 'subject:generator': 0.16; 'wrote:': 0.16; "wouldn't": 0.16; '(in': 0.18; 'am,': 0.23; '2015': 0.23; 'header :In-Reply-To:1': 0.24; 'mon,': 0.24; 'message-id:@mail.gmail.com': 0.28; 'looks': 0.29; 'bad.': 0.29; 'function:': 0.29; 'tutorial': 0.29; 'maybe': 0.31; 'print': 0.31; 'probably': 0.32; 'url:python': 0.33; 'problem': 0.33; 'combination': 0.33; 'though.': 0.33; 'file': 0.34; 'received:google.com': 0.34; 'to:addr:python-list': 0.35; 'something': 0.35; "isn't": 0.35; 'but': 0.36; 'url:org': 0.36; 'possible': 0.36; 'url:library': 0.36; 'so,': 0.37; 'subject:: ': 0.37; 'url:docs': 0.39; 'to:addr:python.org': 0.39; 'some': 0.40; 'url:3': 0.60; 'your': 0.60; "you'll": 0.61; 'url:index': 0.64; 'url:4': 0.70; 'million': 0.73; 'to:name:python': 0.84; 'url:tutorial': 0.91 DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=gmail.com; s=20120113; h=mime-version:in-reply-to:references:from:date:message-id:subject:to :content-type; bh=F8f4hfUKbHAoBjVrH/iDCzKEWEWsNOOu9fbu35a1sU0=; b=vhPwEFrZpKcBj0C40QNiVFZCgUlX4Dijv0p6fN9tnrqv9vbADhZyCcTF5V5ms85SPg 0XyQ+wB51AJCKuQryRcXIQJTvgIA1DqSamJaczOBfFC6fHA/eA7kOwOEARxobefnU/oO D5BbZ3wQGgkBJjQIoR1vpTMil458di34IbFidcGsIalxv0WTzL52wLXHpwCiN++xEtPQ WJlF7dPQKmjLdJYFbOkr3QxemnGAqtqsNo9Hr/SIsMFmXonu219g7Cq/Ew8hpqbuc56s K+E5wCwcPYFuWpAEAV0TgHp4hQK3PS2G51YCVM331XVaCIbucGvU+7LlFZ3mepK6rRHA n2OA== X-Received: by 10.107.16.93 with SMTP id y90mr1718322ioi.69.1433179029506; Mon, 01 Jun 2015 10:17:09 -0700 (PDT) MIME-Version: 1.0 In-Reply-To: References: From: Ian Kelly Date: Mon, 1 Jun 2015 11:16:29 -0600 Subject: Re: lotto number generator To: Python Content-Type: text/plain; charset=UTF-8 X-BeenThere: python-list@python.org X-Mailman-Version: 2.1.20+ 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: 49 NNTP-Posting-Host: 2001:888:2000:d::a6 X-Trace: 1433179038 news.xs4all.nl 2864 [2001:888:2000:d::a6]:57566 X-Complaints-To: abuse@xs4all.nl X-Received-Bytes: 4767 X-Received-Body-CRC: 2173139524 Xref: csiph.com comp.lang.python:91699 On Mon, Jun 1, 2015 at 11:13 AM, Ian Kelly wrote: > On Mon, Jun 1, 2015 at 10:23 AM, gm wrote: >> Hi. >> I am new to python so am still in learning phase. >> >> I was thinking to make one program that will print out all possible >> combinations of 10 pairs. I think this is a good way for something "bigger" >> :-). >> >> This is how this looks like: >> >> 1.) 1 2 >> 2.) 1 2 >> 3.) 1 2 >> 4.) 1 2 >> 5.) 1 2 >> 6.) 1 2 >> 7.) 1 2 >> 8.) 1 2 >> 9.) 1 2 >> 10.) 1 2 >> >> So, i want to print out (in rows) each possible configuration but for all 10 >> pairs. >> >> example: >> 1 1 1 2 2 2 2 1 1 1 >> 2 2 2 1 1 1 1 2 2 2 >> 1 1 2 2 1 1 2 2 1 1 >> etc. >> >> What would be the best way to make something like this ? >> Maybe some tutorial ? > > The Python tutorial is a good place to start: > > https://docs.python.org/3.4/tutorial/index.html > > For your particular problem you'll probably want to use the > itertools.product function: > > https://docs.python.org/3.4/library/itertools.html#itertools.product > > I wouldn't recommend printing out every possible combination to the > screen, though. That's over a million rows! Start with fewer pairs (4 > is probably good), or write them to a file instead. Er, actually it's just 1024, so that isn't so bad. You probably still don't want all that in your terminal, though.