Path: csiph.com!news.swapon.de!fu-berlin.de!uni-berlin.de!not-for-mail From: Tim Golden Newsgroups: comp.lang.python Subject: Re: .py file won't open in windows 7 Date: Thu, 4 Feb 2016 13:09:05 +0000 Lines: 53 Message-ID: References: Mime-Version: 1.0 Content-Type: text/plain; charset=windows-1252 Content-Transfer-Encoding: 7bit X-Trace: news.uni-berlin.de DUw7QLLR6idTLgOUmxaEuAkcPshwBsz8Tmjr2JQrgH5g== 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; '"""': 0.05; 'sys': 0.05; '__name__': 0.07; 'main()': 0.07; 'subject:file': 0.07; '(without': 0.09; 'advice.': 0.09; 'runs,': 0.09; 'python': 0.10; 'def': 0.13; 'interpreter': 0.15; "'__main__':": 0.16; '.py': 0.16; 'from:addr:timgolden.me.uk': 0.16; 'from:name:tim golden': 0.16; 'main():': 0.16; 'message-id:@timgolden.me.uk': 0.16; 'quotes)': 0.16; 'received:74.55.86': 0.16; 'received:74.55.86.74': 0.16; 'received:io': 0.16; 'received:psf.io': 0.16; 'received:smtp.webfaction.com': 0.16; 'received:webfaction.com': 0.16; 'run.': 0.16; 'seconds.': 0.16; 'subject:windows': 0.16; 'tjg': 0.16; 'url:faq': 0.16; 'wrote:': 0.16; 'basically': 0.18; 'result,': 0.18; '(in': 0.18; 'variable': 0.18; 'windows': 0.20; 'to:name:python-list@python.org': 0.20; 'to:2**1': 0.21; 'ones.': 0.22; 'this:': 0.23; 'import': 0.24; 'header:In-Reply-To:1': 0.24; 'header:User-Agent:1': 0.26; 'command': 0.26; 'error': 0.27; 'dos': 0.27; 'prints': 0.29; 'repair': 0.29; 'environment': 0.29; 'code:': 0.29; 'starts': 0.29; 'program,': 0.29; 'code': 0.30; 'window': 0.30; 'run': 0.33; 'options': 0.33; 'url:python': 0.33; 'open': 0.33; 'case,': 0.34; 'file': 0.34; 'add': 0.34; 'something': 0.35; 'but': 0.36; 'list,': 0.36; 'instead': 0.36; 'url:org': 0.36; 'closing': 0.36; 'url:library': 0.36; 'to:addr:python-list': 0.36; 'two': 0.37; "won't": 0.38; 'drop': 0.38; 'stuff': 0.38; 'end': 0.39; 'received:192': 0.39; 'to:addr:python.org': 0.40; 'where': 0.40; 'url:3': 0.60; 'your': 0.60; 'charset:windows-1252': 0.62; 'from:addr:mail': 0.70; 'eg:': 0.84; 'happened.': 0.84; 'url:functions': 0.84 User-Agent: Mozilla/5.0 (Windows NT 6.1; WOW64; rv:38.0) Gecko/20100101 Thunderbird/38.0.1 In-Reply-To: X-BeenThere: python-list@python.org X-Mailman-Version: 2.1.21rc1 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:102491 On 04/02/2016 12:52, Yossifoff Yossif wrote: > Hallow, > I try to open a .py file (attached), but what I get is a windows DOS window opening and closing in a couple of seconds. Ran repair of the program, nothing happened. > I cannot see error messages and don't know where to look for ones. > Would appreciate your piece of advice. Attachments won't make it through to the list, Yossif. But your code is basically something like this: """ import sys def main(): # calculate stuff print(stuff) if __name__ == '__main__': sys.exit(main()) """ In that case, the program starts (in a console window), runs, prints the result, and then closes. You've got a few simple ways of seeing the output: * Run the program from the command line (start a console window in the directory where the code is and type "ss7calc.py") https://docs.python.org/3/faq/windows.html#how-do-i-run-a-python-program-under-windows * Instead of use sys.exit immediately, add input("Press enter...") to the end of your code: https://docs.python.org/3/library/functions.html?highlight=input#input eg: result = main() input("Press enter...") sys.exit(result) * set the PYTHONINSPECT environment variable for your user https://docs.python.org/3/using/cmdline.html#envvar-PYTHONINSPECT * Use a shebang line "#!python -i" (without the quotes) at the top of your program. https://docs.python.org/3/using/windows.html#shebang-lines These last two options will drop into the Python interpreter after your code has run. TJG