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| From | INADA Naoki <songofacandy@gmail.com> |
| Date | Mon, 11 Aug 2014 19:19:05 +0900 |
| Subject | Re: Is print thread safe? |
| To | "Steven D'Aprano" <steve@pearwood.info> |
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On Python 3, print is thread safe. But Python 2 has broken scenario: print "spam", "spam", "spam" # thread 1 print "eggs", "eggs", "eggs" # thread 2 In this case, 2 lines are mixed. In your case, "spam spam spam" and "eggs eggs eggs" are not mixed. But newline is mixed like: spam spam spameggs eggs eggs eggs eggs eggsspam spam spam eggs eggs eggs spam spam spam On Mon, Aug 11, 2014 at 4:44 PM, Steven D'Aprano <steve@pearwood.info> wrote: > Specifically for Python 2.6 and 2.7, but answers for 3.x appreciated as > well. > > Is print thread safe? That is, if I have two threads that each call > print, say: > > print "spam spam spam" # thread 1 > print "eggs eggs eggs" # thread 2 > > I don't care which line prints first, but I do care if the two lines are > mixed in together, something like this: > > spam spaeggs eggs m seggspams > > > Does print perform its own locking to prevent this? > > > > -- > Steven > -- > https://mail.python.org/mailman/listinfo/python-list -- INADA Naoki <songofacandy@gmail.com>
Back to comp.lang.python | Previous | Next — Previous in thread | Next in thread | Find similar | Unroll thread
Is print thread safe? Steven D'Aprano <steve@pearwood.info> - 2014-08-11 07:44 +0000
Re: Is print thread safe? INADA Naoki <songofacandy@gmail.com> - 2014-08-11 19:19 +0900
Re: Is print thread safe? Steven D'Aprano <steve+comp.lang.python@pearwood.info> - 2014-08-12 02:07 +1000
Re: Is print thread safe? Cameron Simpson <cs@zip.com.au> - 2014-08-12 07:53 +1000
Re: Is print thread safe? Steven D'Aprano <steve+comp.lang.python@pearwood.info> - 2014-08-12 09:56 +1000
Re: Is print thread safe? Chris Angelico <rosuav@gmail.com> - 2014-08-12 10:14 +1000
Re: Is print thread safe? Marko Rauhamaa <marko@pacujo.net> - 2014-08-12 08:01 +0300
Re: Is print thread safe? Cameron Simpson <cs@zip.com.au> - 2014-08-12 16:15 +1000
Re: Is print thread safe? Cameron Simpson <cs@zip.com.au> - 2014-08-12 14:31 +1000
Re: Is print thread safe? Chris Angelico <rosuav@gmail.com> - 2014-08-12 23:53 +1000
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