Path: csiph.com!usenet.pasdenom.info!goblin2!goblin.stu.neva.ru!newsfeed.xs4all.nl!newsfeed5.news.xs4all.nl!xs4all!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 0.010 X-Spam-Evidence: '*H*': 0.98; '*S*': 0.00; 'else:': 0.03; 'subject:Error': 0.07; 'received:mail-qc0-f174.google.com': 0.09; 'referenced': 0.09; 'def': 0.10; '0.0,': 0.16; '1000):': 0.16; 'dist': 0.16; 'idx': 0.16; '<': 0.17; 'skip:\xa0 30': 0.17; 'variable': 0.20; 'skip:" 30': 0.20; 'to:name:python- list@python.org': 0.20; 'assignment': 0.22; 'to:2**1': 0.23; '(most': 0.27; 'message-id:@mail.gmail.com': 0.27; 'points': 0.29; 'skip:& 10': 0.29; 'error': 0.30; 'code': 0.31; 'point': 0.31; 'file': 0.32; 'print': 0.32; 'getting': 0.33; 'traceback': 0.33; 'to:addr:python-list': 0.33; 'received:google.com': 0.34; 'false': 0.35; 'continue': 0.35; 'received:209.85': 0.35; 'skip:p 20': 0.36; 'unable': 0.36; 'why': 0.37; 'received:209': 0.37; 'received:209.85.216': 0.37; 'to:addr:python.org': 0.39; 'header:Received:5': 0.40; 'skip:u 10': 0.60; '8bit%:100': 0.70; '\xa0\xa0\xa0\xa0\xa0\xa0\xa0\xa0\xa0\xa0\xa0': 0.84; '74,': 0.91; '\xa0\xa0\xa0\xa0\xa0\xa0\xa0\xa0\xa0\xa0': 0.91 DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=gmail.com; s=20120113; h=mime-version:date:message-id:subject:from:to:content-type; bh=JY8AWxItjtzNmsa73qznr/5We0r9NWUgqhWmwob+q3Y=; b=OjIB7IzqlwZj8gpllLTWFJEd1fCn3RBXBWcdWcHXksfS93EwuhmwIgZ9D4AVzfX/Rn 2ewnGNpfPl2d5fmySeniLQQ6UBYeZUBJ+dMDDk0EAYn9dvJAndbVaQPsDpDGNgHKntrE ZawLMlcYytPJTubU5UBqh8qQnU0L31oLeBB4Pwp9Cit6NHGRxNVdk4msDs4rd1yjGXGJ 0mpHQVFkdmVvoRIXX8JGcC9W7jBkXcHvFur2Zlmc+bN5EzkfsWGC8DHUp9bkCCXqKHD3 mWNWEhkh0ek/qjhSmQfZEW6rLgBM04FPuHdljOdvBmmNx36bvdKyxaJQiEYPNzUND5MJ 6ixw== MIME-Version: 1.0 Date: Wed, 14 Nov 2012 16:18:38 +0100 Subject: Error From: inshu chauhan To: "python-list@python.org" , Zero Piraeus Content-Type: multipart/alternative; boundary=047d7bdc101089634a04ce760cff 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: 87 NNTP-Posting-Host: 2001:888:2000:d::a6 X-Trace: 1352906321 news.xs4all.nl 6915 [2001:888:2000:d::a6]:37778 X-Complaints-To: abuse@xs4all.nl Xref: csiph.com comp.lang.python:33339 --047d7bdc101089634a04ce760cff Content-Type: text/plain; charset=ISO-8859-1 for this code m getting this error : CODE : def ComputeClasses(data): radius = .5 points = [] for cy in xrange(0, data.height): for cx in xrange(0, data.width): if data[cy,cx] != (0.0,0.0,0.0): centre = data[cy, cx] points.append(centre) change = True while change: for ring_number in xrange(1, 1000): change = False new_indices = GenerateRing(cx, cy, ring_number) for idx in new_indices: point = data[idx[0], idx[1]] if point == (0.0, 0.0, 0.0 ): continue else: dist = distance(centre, point) if dist < radius : print point points.append(point) change = True print change break ERROR : Traceback (most recent call last): File "Z:\modules\classification2.py", line 74, in ComputeClasses(data) File "Z:\modules\classification2.py", line 56, in ComputeClasses dist = distance(centre, point) UnboundLocalError: local variable 'centre' referenced before assignment And i am unable to understand .. 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