Path: csiph.com!fu-berlin.de!uni-berlin.de!not-for-mail From: MRAB Newsgroups: comp.lang.python Subject: Re: Generate config file from template using Python search and replace. Date: Mon, 30 Nov 2015 03:23:34 +0000 Lines: 40 Message-ID: References: <73046000-f634-40f2-9c83-f03a5db134e6@googlegroups.com> <4f923003-4f85-4a69-bfda-165194211bb4@googlegroups.com> <11d4423f-7912-426c-9d20-d2cb5efba18b@googlegroups.com> <565BB71D.1010303@medimorphosis.com.au> Mime-Version: 1.0 Content-Type: text/plain; charset=utf-8; format=flowed Content-Transfer-Encoding: 7bit X-Trace: news.uni-berlin.de 2UjRCZqAMPAdptyZT5ho9w39Y5BR3ELIzbvYcIXQjVhw== 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:Python': 0.05; 'below)': 0.07; 'matches': 0.07; 'subject:file': 0.07; '"r")': 0.09; 'os.path': 0.09; 'script,': 0.09; 'subject:using': 0.09; 'python': 0.10; 'template': 0.11; 'subject: \n ': 0.15; '"python': 0.16; 'did:': 0.16; 'from:addr:mrabarnett.plus.com': 0.16; 'from:addr:python': 0.16; 'from:name:mrab': 0.16; 'magic': 0.16; 'message-id:@mrabarnett.plus.com': 0.16; 'received:192.168.1.4': 0.16; 'received:io': 0.16; 'received:psf.io': 0.16; 'subject:Generate': 0.16; 'subject:search': 0.16; 'wrote:': 0.16; 'string': 0.17; 'exists': 0.18; '(see': 0.20; 'this:': 0.23; 'import': 0.24; 'header:In-Reply-To:1': 0.24; 'header:User- Agent:1': 0.26; 'skip:# 10': 0.27; 'heading': 0.27; 'print': 0.30; 'values.': 0.33; 'open': 0.33; 'skip:d 20': 0.34; 'something': 0.35; 'but': 0.36; 'to:addr:python-list': 0.36; 'subject:: ': 0.37; 'seem': 0.37; 'does': 0.39; 'subject:from': 0.39; 'received:192': 0.39; 'to:addr:python.org': 0.40; 'challenge': 0.61; 'watch': 0.62; 'else.': 0.66; 'me!': 0.84; 'hills': 0.93 X-CM-Score: 0.00 X-CNFS-Analysis: v=2.1 cv=CvRCCSMD c=1 sm=1 tr=0 a=0nF1XD0wxitMEM03M9B4ZQ==:117 a=0nF1XD0wxitMEM03M9B4ZQ==:17 a=0Bzu9jTXAAAA:8 a=EBOSESyhAAAA:8 a=IkcTkHD0fZMA:10 a=gdROXQi2OMzZr1EzV1YA:9 a=QEXdDO2ut3YA:10 X-AUTH: mrabarnett@:2500 User-Agent: Mozilla/5.0 (Windows NT 10.0; WOW64; rv:38.0) Gecko/20100101 Thunderbird/38.3.0 In-Reply-To: <565BB71D.1010303@medimorphosis.com.au> 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:99720 On 2015-11-30 02:40, Rob Hills wrote: > A program I am writing at present does exactly this and I simply do > multiple calls to string.replace (see below) > > On 30/11/15 10:31, Mr Zaug wrote: >> I seem to be heading in this direction. >> >> #!/usr/bin/env python >> import re >> from os.path import exists >> >> script, template_file = argv >> print "Opening the template file..." >> >> with open (template_file, "r") as a_string: >> data=a_string.read().replace('BRAND', 'Fluxotine') > > data=data.replace('STRING_2', 'New String 2') > data=data.replace('STRING_3', 'New String 3') > >> print(data) >> >> So now the challenge is to use the read().replace magic for multiple values. > > It's crude, but it works well for me! > You do need to watch out for matches that are part of something else. For example, if you had this: template = "REPLACE_THIS but DONT_REPLACE_THIS" and you did: result = template.replace("REPLACE_THIS", "Python") you would get: "Python but DONT_Python"