Path: csiph.com!x330-a1.tempe.blueboxinc.net!usenet.pasdenom.info!weretis.net!feeder1.news.weretis.net!feeder.erje.net!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 0.005 X-Spam-Evidence: '*H*': 0.99; '*S*': 0.00; 'bug': 0.02; 'everybody,': 0.07; 'prints': 0.07; 'python': 0.08; '__future__': 0.09; 'from:name:massimo di pierro': 0.09; 'def': 0.13; '2.7': 0.13; 'received:209.85.210.174': 0.13; 'received:mail- iy0-f174.google.com': 0.13; "'int'": 0.16; 'from:addr:massimo.dipierro': 0.16; 'massimo': 0.16; '(most': 0.21; 'changed': 0.23; 'division': 0.23; 'operand': 0.23; 'traceback': 0.24; 'code': 0.25; 'skip:_ 20': 0.26; 'import': 0.27; 'somebody': 0.27; 'problem': 0.29; 'print': 0.29; 'class': 0.29; '3.x': 0.30; 'apologies.': 0.30; 'typeerror:': 0.30; 'x-mailer:apple mail (2.1084)': 0.30; 'message-id:@gmail.com': 0.33; 'to:addr:python-list': 0.33; 'last):': 0.34; 'file': 0.35; 'problem.': 0.36; 'charset:us-ascii': 0.36; 'but': 0.37; 'received:google.com': 0.37; 'using': 0.37; 'could': 0.37; 'some': 0.38; 'received:209.85': 0.38; 'received:192': 0.38; 'help': 0.39; 'received:192.168.1': 0.39; 'received:209': 0.39; 'to:addr:python.org': 0.40; 'hope': 0.61; 'header:Message-Id:1': 0.62; 'direct': 0.66; 'reproduced': 0.84; 'ask,': 0.91; 'type(s)': 0.91 DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=gmail.com; s=gamma; h=from:content-type:content-transfer-encoding:subject:date:message-id :to:mime-version:x-mailer; bh=+g+UUy+c32wRwe7dpnXsxeg8wR5Jm8lYf+h0SkQgaS4=; b=eZq762uBoLY03op1Ze8S8+LizBeVZZylpZjXm0faZitakCtrrd8genSTFfM8bsv2TO fEiPdnXWHLYhGrbgRsas+y89g4A1dii7MhZKDF1rsRUJz8VB/7J1X20hbE/dRFxJht24 R2xKycEfRXW3ivEec62l683BfS2+TLXkEt4FM= From: Massimo Di Pierro Content-Type: text/plain; charset=us-ascii Content-Transfer-Encoding: quoted-printable Subject: __future__ and __rdiv__ Date: Sun, 22 Jan 2012 23:22:49 -0600 To: python-list@python.org Mime-Version: 1.0 (Apple Message framework v1084) X-Mailer: Apple Mail (2.1084) X-BeenThere: python-list@python.org X-Mailman-Version: 2.1.12 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: 26 NNTP-Posting-Host: 2001:888:2000:d::a6 X-Trace: 1327296175 news.xs4all.nl 6846 [2001:888:2000:d::a6]:57332 X-Complaints-To: abuse@xs4all.nl Xref: x330-a1.tempe.blueboxinc.net comp.lang.python:19249 Hello everybody, I hope somebody could help me with this problem. If this is not the = right place to ask, please direct me to the right place and apologies. I am using Python 2.7 and I am writing some code I want to work on 3.x = as well. The problem can be reproduced with this code: # from __future__ import division class Number(object): def __init__(self,number): self.number=3Dnumber def __rdiv__(self,other): return other/self.number print 10/Number(5) It prints 2 as I expect. But if I uncomment the first line, I get: Traceback (most recent call last): File "test.py", line 8, in print 10/Number(5) TypeError: unsupported operand type(s) for /: 'int' and 'Number' Is this a bug or the __future__ division in 3.x changed the way = operators are overloaded? Where can I read more? Massimo=