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Re: improving performance of writing into a pipe

References (4 earlier) <8f26ac4d-4732-46ac-bf4e-877696b22241@googlegroups.com> <mailman.1958.1361211131.2939.python-list@python.org> <85cd2254-0800-4448-9117-9175bbfd10f6@googlegroups.com> <mailman.2012.1361267738.2939.python-list@python.org> <4b4a7bc9-8283-4653-841e-d648a7586fb9@googlegroups.com>
From Oscar Benjamin <oscar.j.benjamin@gmail.com>
Date 2013-02-19 11:15 +0000
Subject Re: improving performance of writing into a pipe
Newsgroups comp.lang.python
Message-ID <mailman.2016.1361272558.2939.python-list@python.org> (permalink)

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On 19 February 2013 10:27,  <mikprog@gmail.com> wrote:
>> can work. As a few people already told you the built-in open()
>
>
> Few people?
> I thought Oscar was a singular person, not a group of people :-)

Serhiy also suggested it.

> Seriously, I am convinced by that approach (thanks) and I wish to go that way, but the problem I am getting now is that the open fails and then I can't go on.

Perhaps no-one has been explicit enough about what you should do here:

1) Remove all try/except from your code.
2) Run the code
3) Look at the *unadulterated* error message that Python prints out
4) Either fix the error if you know how or
5) Reply here posting the exact error message.

Also, in future:
6) Don't use bare try/except and don't catch errors while you're
debugging. Allow the errors to be printed as they are so that you can
read the message and see the line that triggers the error.
7) Don't post to a mailing list saying "I get an error", "I can see
errors" or "it doesn't work". If you have errors paste the exact error
message (all of it!). If you don't get errors but it doesn't do what
you want explain exactly what happened and also what you wanted to
happen. If you had followed this procedure at the start of this
thread, then you would already have a solution to (or at least an
explanation of) your problem by now.

> Also, I am now looking at the subprocess as os.popen seems deprecated.
> Any opinion on that?

I'm not convinced that either is appropriate for your problem.


Oscar

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Thread

improving performance of writing into a pipe mikprog@gmail.com - 2013-02-18 07:12 -0800
  Re: improving performance of writing into a pipe Oscar Benjamin <oscar.j.benjamin@gmail.com> - 2013-02-18 15:21 +0000
    Re: improving performance of writing into a pipe mikprog@gmail.com - 2013-02-18 08:31 -0800
      Re: improving performance of writing into a pipe Thomas Rachel <nutznetz-0c1b6768-bfa9-48d5-a470-7603bd3aa915@spamschutz.glglgl.de> - 2013-02-18 17:49 +0100
        Re: improving performance of writing into a pipe mikprog@gmail.com - 2013-02-18 09:00 -0800
          Re: improving performance of writing into a pipe Michael Torrie <torriem@gmail.com> - 2013-02-18 11:12 -0700
            Re: improving performance of writing into a pipe mikprog@gmail.com - 2013-02-19 01:24 -0800
              Re: improving performance of writing into a pipe Peter Otten <__peter__@web.de> - 2013-02-19 10:55 +0100
                Re: improving performance of writing into a pipe mikprog@gmail.com - 2013-02-19 02:27 -0800
                Re: improving performance of writing into a pipe Oscar Benjamin <oscar.j.benjamin@gmail.com> - 2013-02-19 11:15 +0000
                Re: improving performance of writing into a pipe mikprog@gmail.com - 2013-02-19 02:27 -0800
              Re: improving performance of writing into a pipe Michael Torrie <torriem@gmail.com> - 2013-02-19 10:47 -0700
                Re: improving performance of writing into a pipe mikprog@gmail.com - 2013-02-20 09:54 -0800
                Re: improving performance of writing into a pipe John Gordon <gordon@panix.com> - 2013-02-20 18:39 +0000
                Re: improving performance of writing into a pipe Oscar Benjamin <oscar.j.benjamin@gmail.com> - 2013-02-20 22:05 +0000
                Re: improving performance of writing into a pipe mikprog@gmail.com - 2013-02-20 09:54 -0800
            Re: improving performance of writing into a pipe mikprog@gmail.com - 2013-02-19 01:24 -0800
    Re: improving performance of writing into a pipe mikprog@gmail.com - 2013-02-18 08:31 -0800
  Re: improving performance of writing into a pipe Serhiy Storchaka <storchaka@gmail.com> - 2013-02-18 21:29 +0200
    Re: improving performance of writing into a pipe mikprog@gmail.com - 2013-02-19 04:10 -0800
    Re: improving performance of writing into a pipe mikprog@gmail.com - 2013-02-19 04:10 -0800
    Re: improving performance of writing into a pipe mikprog@gmail.com - 2013-02-19 05:39 -0800
      Re: improving performance of writing into a pipe Peter Otten <__peter__@web.de> - 2013-02-19 14:57 +0100
        Re: improving performance of writing into a pipe mikprog@gmail.com - 2013-02-19 06:38 -0800
        Re: improving performance of writing into a pipe mikprog@gmail.com - 2013-02-19 06:38 -0800
    Re: improving performance of writing into a pipe mikprog@gmail.com - 2013-02-19 05:39 -0800

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