Path: csiph.com!usenet.pasdenom.info!aioe.org!news.stack.nl!newsfeed.xs4all.nl!newsfeed3.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 0.002 X-Spam-Evidence: '*H*': 1.00; '*S*': 0.00; 'anyway.': 0.05; 'explicit': 0.07; 'string': 0.09; '-10': 0.09; 'ascii': 0.09; 'converts': 0.09; 'integers': 0.09; 'types:': 0.09; 'python': 0.11; 'bye': 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; 'str()': 0.16; 'subject:non': 0.16; 'typeerror:': 0.16; 'with?': 0.16; 'wrote:': 0.18; '>>>': 0.22; 'print': 0.22; 'header:User-Agent:1': 0.23; 'comparing': 0.24; "shouldn't": 0.24; 'header:In-Reply-To:1': 0.27; 'fixed': 0.29; "doesn't": 0.30; 'andrew': 0.30; 'characters': 0.30; 'strongly': 0.30; 'gives': 0.31; '"",': 0.31; '>>>>': 0.31; 'another.': 0.31; 'file': 0.32; '(most': 0.33; 'guess': 0.33; 'subject:with': 0.35; 'something': 0.35; 'case,': 0.35; 'convert': 0.35; 'objects': 0.35; 'but': 0.35; 'consistent': 0.36; 'to:addr :python-list': 0.38; 'recent': 0.39; 'to:addr:python.org': 0.39; 'how': 0.40; 'read': 0.60; 'more': 0.64; 'different': 0.65; 'header:Reply-To:1': 0.67; 'reply-to:no real name:2**0': 0.71; 'behavior': 0.77; 'reply-to:addr:python.org': 0.84; 'dealt': 0.91 X-CM-Score: 0.00 X-CNFS-Analysis: v=2.1 cv=KrN0hwmN c=1 sm=1 tr=0 a=0nF1XD0wxitMEM03M9B4ZQ==:117 a=0nF1XD0wxitMEM03M9B4ZQ==:17 a=0Bzu9jTXAAAA:8 a=K2DDQYBT4xIA:10 a=kqmNAzXxcqYA:10 a=ihvODaAuJD4A:10 a=OUOv7kDek9cA:10 a=8nJEP1OIZ-IA:10 a=EBOSESyhAAAA:8 a=8AHkEIZyAAAA:8 a=2yUZsYxkAUsA:10 a=kChZ7zzEzi27511D9IwA:9 a=wPNLvfGTeEIA:10 X-AUTH: mrabarnett:2500 Date: Sun, 30 Jun 2013 20:12:19 +0100 From: MRAB User-Agent: Mozilla/5.0 (Windows NT 5.1; rv:17.0) Gecko/20130620 Thunderbird/17.0.7 MIME-Version: 1.0 To: python-list@python.org Subject: Re: math functions with non numeric args References: <51D07EC3.7030307@gmail.com> In-Reply-To: <51D07EC3.7030307@gmail.com> Content-Type: text/plain; charset=ISO-8859-1; format=flowed Content-Transfer-Encoding: 7bit X-BeenThere: python-list@python.org X-Mailman-Version: 2.1.15 Precedence: list Reply-To: python-list@python.org 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: 33 NNTP-Posting-Host: 2001:888:2000:d::a6 X-Trace: 1372619537 news.xs4all.nl 15976 [2001:888:2000:d::a6]:37286 X-Complaints-To: abuse@xs4all.nl Xref: csiph.com comp.lang.python:49510 On 30/06/2013 19:53, Andrew Berg wrote: > On 2013.06.30 13:46, Andrew Z wrote: >> Hello, >> >> print max(-10, 10) >> 10 >> print max('-10', 10) >> -10 >> >> My guess max converts string to number bye decoding each of the characters to it's ASCII equivalent? >> >> Where can i read more on exactly how the situations like these are dealt with? > This behavior is fixed in Python 3: > >>>> max('10', 10) > Traceback (most recent call last): > File "", line 1, in > TypeError: unorderable types: int() > str() > > Python is strongly typed, so it shouldn't magically convert something from one type to another. > Explicit is better than implicit. > It doesn't magically convert anyway. In Python 2, comparing objects of different types like that gives a consistent but arbitrary result: in this case, bytestrings ('str') are greater than integers ('int'): >>> max('-10', 10) '-10' >>> max('10', -10) '10'