Path: csiph.com!v102.xanadu-bbs.net!xanadu-bbs.net!feeder.erje.net!eu.feeder.erje.net!newsfeed.xs4all.nl!newsfeed4a.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 0.000 X-Spam-Evidence: '*H*': 1.00; '*S*': 0.00; 'subject:error': 0.03; 'subject:not': 0.03; 'value,': 0.04; "subject:' ": 0.07; 'received:80.91': 0.09; 'received:80.91.229': 0.09; 'received:gmane.org': 0.09; 'received:list': 0.09; 'semantic': 0.09; 'subject:trying': 0.09; 'subject:while': 0.09; "'rb')": 0.16; 'callable.': 0.16; 'file.read()': 0.16; 'finney': 0.16; 'preserve': 0.16; 'received:80.91.229.3': 0.16; 'received:plane.gmane.org': 0.16; 'says)': 0.16; 'subject:object': 0.16; '>>>': 0.22; 'header:User-Agent:1': 0.23; 'error': 0.23; 'char': 0.24; 'header:X-Complaints-To:1': 0.27; 'struct': 0.31; 'writes:': 0.31; 'call.': 0.33; 'problem': 0.35; 'choosing': 0.36; 'should': 0.36; 'ben': 0.38; 'skip:[ 10': 0.38; 'to:addr:python- list': 0.38; 'to:addr:python.org': 0.39; 'received:org': 0.40; 'name': 0.63; 'choose': 0.64; 'skip:\xe2 10': 0.65; 'here': 0.66; 'records': 0.73; '*purpose*': 0.84; 'received:125': 0.84 X-Injected-Via-Gmane: http://gmane.org/ To: python-list@python.org From: Ben Finney Subject: Re: TypeError: 'bytes' object is not callable error while trying to converting to bytes. Date: Tue, 05 Aug 2014 15:57:13 +1000 References: <02baad14-39b1-41a0-a47d-28772c97ea54@googlegroups.com> Mime-Version: 1.0 Content-Type: text/plain; charset=utf-8 Content-Transfer-Encoding: 8bit X-Gmane-NNTP-Posting-Host: jigong.madmonks.org X-Public-Key-ID: 0xAC128405 X-Public-Key-Fingerprint: 517C F14B B2F3 98B0 CB35 4855 B8B2 4C06 AC12 8405 X-Public-Key-URL: http://www.benfinney.id.au/contact/bfinney-pubkey.asc X-Post-From: Ben Finney User-Agent: Gnus/5.13 (Gnus v5.13) Emacs/24.3 (gnu/linux) Cancel-Lock: sha1:rJZXCcIvTDBH42M+3qBcmdNCdB8= 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: 32 NNTP-Posting-Host: 2001:888:2000:d::a6 X-Trace: 1407218248 news.xs4all.nl 2869 [2001:888:2000:d::a6]:32925 X-Complaints-To: abuse@xs4all.nl Xref: csiph.com comp.lang.python:75718 Satish ML writes: > >>>import struct > >>>file = open('data.bin', 'rb') Here you re-bind the name ‘file’ to the return value from that call. > >>>bytes = file.read() Here you re-bind the name ‘bytes’ to the return value from that call. > >>> records = [bytes([char] * 8) for char in b'spam'] Here you attempt to call ‘bytes’, which (as the error says) is not callable. You should choose names which are not already bound:: in_file = open('data.bin', 'rb') in_file_content = in_file.read() records = [bytes([char] * 8) for char in in_file_content] When choosing names, try to communicate the *purpose* of the value, its semantic meaning. The type should be of secondary importance, and almost always should not be part of the name. -- \ “Institutions will try to preserve the problem to which they | `\ are the solution.” —Clay Shirky, 2012 | _o__) | Ben Finney