Path: csiph.com!fu-berlin.de!uni-berlin.de!not-for-mail From: Peter Otten <__peter__@web.de> Newsgroups: comp.lang.python Subject: Re: palindrome Date: Tue, 17 Nov 2015 10:48:36 +0100 Organization: None Lines: 13 Message-ID: References: <78cl4bljie79vqr80d1g084jm8ma3k0r9k@4ax.com> Mime-Version: 1.0 Content-Type: text/plain; charset="UTF-8" Content-Transfer-Encoding: 8Bit X-Trace: news.uni-berlin.de 7TJh8R9kkT9KFXP5DerjBwRVFdF28+MFnnBDqZ1/mWQg== Return-Path: X-Original-To: python-list@python.org Delivered-To: python-list@mail.python.org X-Spam-Status: OK 0.003 X-Spam-Evidence: '*H*': 0.99; '*S*': 0.00; 'received:80.91': 0.09; 'received:80.91.229': 0.09; 'received:gmane.org': 0.09; 'received:list': 0.09; 'received:80.91.229.3': 0.16; 'received:dip0.t-ipconnect.de': 0.16; 'received:io': 0.16; 'received:plane.gmane.org': 0.16; 'received:psf.io': 0.16; 'received:t-ipconnect.de': 0.16; 'wrote:': 0.16; 'string': 0.17; '>>>': 0.20; 'candidates': 0.21; 'skip:l 40': 0.23; 'header:User- Agent:1': 0.26; 'header:X-Complaints-To:1': 0.26; 'looks': 0.29; 'getting': 0.33; 'picking': 0.33; 'to:addr:python-list': 0.36; 'subject:: ': 0.37; 'received:org': 0.37; 'to:addr:python.org': 0.40; 'received:de': 0.40; 'your': 0.60 X-Injected-Via-Gmane: http://gmane.org/ X-Gmane-NNTP-Posting-Host: p57bd8631.dip0.t-ipconnect.de User-Agent: KNode/4.13.3 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: , Xref: csiph.com comp.lang.python:98913 Abhiram R wrote: > ​Haha. Nice. Although with your length of string and the range you're > picking from,the chances of you getting a palindrome are (1/24!) :D ​ Are you sure? >>> candidates = list(itertools.product(string.ascii_lowercase, repeat=4)) >>> len(candidates)/len([c for c in candidates if c == c[::-1]]) 676.0 That looks like one in 26**(length//2)