Path: csiph.com!usenet.pasdenom.info!news.albasani.net!newsfeed.freenet.ag!news2.euro.net!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 0.001 X-Spam-Evidence: '*H*': 1.00; '*S*': 0.00; 'subject:Question': 0.07; 'wang': 0.07; 'python': 0.09; 'idea?': 0.09; 'imports': 0.09; 'subject:related': 0.09; 'terminate.': 0.09; 'to:addr:comp.lang.python': 0.09; 'way:': 0.09; 'cc:addr:python- list': 0.10; 'def': 0.10; 'advance.': 0.15; 'sat,': 0.15; 'instantiates': 0.16; 'run(self):': 0.16; 'win7': 0.16; 'wrote:': 0.17; 'module,': 0.17; 'jan': 0.18; 'windows': 0.19; 'module': 0.19; 'import': 0.21; 'skip:_ 20': 0.22; 'cc:2**0': 0.23; 'cc:no real name:2**0': 0.24; 'command': 0.24; 'cc:addr:python.org': 0.25; 'header:In-Reply-To:1': 0.25; 'header:User-Agent:1': 0.26; 'thanks!': 0.26; 'received:209.85.212': 0.28; 'chris': 0.28; 'routine': 0.29; 'starts': 0.29; 'skip:_ 10': 0.29; 'class': 0.29; "i'm": 0.29; 'print': 0.32; 'code:': 0.33; 'hi,': 0.33; 'another': 0.33; 'received:google.com': 0.34; 'thanks': 0.34; 'pm,': 0.35; 'received:209.85': 0.35; 'but': 0.36; 'should': 0.36; 'skip:p 20': 0.36; 'keeps': 0.37; 'does': 0.37; 'why': 0.37; 'received:209': 0.37; 'subject:: ': 0.38; 'think': 0.40; 'your': 0.60; "you'll": 0.62; 'protect': 0.69; 'prompt': 0.78; '2013': 0.84; 'repeat.': 0.84; 'rinse': 0.84; 'works!': 0.84 X-Received: by 10.182.220.10 with SMTP id ps10mr379970obc.33.1358573615537; Fri, 18 Jan 2013 21:33:35 -0800 (PST) Newsgroups: comp.lang.python Date: Fri, 18 Jan 2013 21:33:35 -0800 (PST) In-Reply-To: Complaints-To: groups-abuse@google.com Injection-Info: glegroupsg2000goo.googlegroups.com; posting-host=124.79.196.189; posting-account=Li8yggkAAAAn1vIAb9dmn7qk39nBJvjm References: <6816f48f-753f-4ae3-be79-3b16bd83e6f2@googlegroups.com> User-Agent: G2/1.0 X-Google-Web-Client: true X-Google-IP: 124.79.196.189 MIME-Version: 1.0 Subject: Re: Question related to multiprocessing.Process From: Cen Wang To: comp.lang.python@googlegroups.com Content-Type: text/plain; charset=ISO-8859-1 Cc: python-list@python.org 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: , Message-ID: Lines: 58 NNTP-Posting-Host: 2001:888:2000:d::a6 X-Trace: 1358573617 news.xs4all.nl 6855 [2001:888:2000:d::a6]:36998 X-Complaints-To: abuse@xs4all.nl Xref: csiph.com comp.lang.python:37054 Thanks! It now works! On Saturday, 19 January 2013 13:05:07 UTC+8, Chris Angelico wrote: > On Sat, Jan 19, 2013 at 3:50 PM, Cen Wang wrote: > > > Hi, when I use multiprocessing.Process in this way: > > > > > > from multiprocessing import Process > > > > > > class MyProcess(Process): > > > > > > def __init__(self): > > > Process.__init__(self) > > > > > > def run(self): > > > print 'x' > > > > > > p = MyProcess() > > > p.start() > > > > > > It just keeps printing 'x' on my command prompt and does not end. But I think MyProcess should print an 'x' and then terminate. I don't why this is happening. I'm using Win7 64 bit, Python 2.7.3. Any idea? Thanks in advance. > > > > Multiprocessing on Windows requires that your module be importable. So > > it imports your main module, which instantiates another MyProcess, > > starts it, rinse and repeat. You'll need to protect your main routine > > code: > > > > if __name__=="__main__": > > p = MyProcess() > > p.start() > > > > ChrisA