Groups | Search | Server Info | Keyboard shortcuts | Login | Register [http] [https] [nntp] [nntps]

Groups > comp.lang.python > #62720

Re: Variables in a loop, Newby question

Show key headers only | View raw

On Thu, Dec 26, 2013 at 12:01 PM, Cameron Simpson <cs@zip.com.au> wrote:
> On 25Dec2013 15:27, Denis McMahon <denismfmcmahon@gmail.com> wrote:
>> On Wed, 25 Dec 2013 16:42:47 +1100, Cameron Simpson wrote:
>> > On 25Dec2013 02:54, Denis McMahon <denismfmcmahon@gmail.com> wrote:
>> >> On Tue, 24 Dec 2013 10:27:13 -0800, vanommen.robert wrote:
>> >> > In this script i want to read the temperatures and make them
>> >> > available to other scripts. [...]
>> >> If you want this process to provide data to other processes, you might
>> >> want to look at using a socket so they can request it as needed.
>> >
>> > Or just write it to a file for another process to open and read...
>>
>> That can cause io sync errors, eg if another process has the file opened
>> for read when you try to write, or you are writing when they try to read.
>
> Well, obviously synchronisation of some kind is needed. The easiest
> is write-new-file-with-temp-name followed by rename(). Atomic. Lock
> files are also not too hard, etc.

Does anyone else have the vague feeling that the OP's problem might be
better served by simply importing the script (thus making those values
available to another Python script) than by any of these rather more
complicated theories?

Of course, this requires a little more clarification from the OP, but
I'd rather posit the simple idea and see it knocked down before going
on to the complex :)

ChrisA

Back to comp.lang.python | Previous | Next — Previous in thread | Next in thread | Find similar | Unroll thread

Thread

Variables in a loop, Newby question vanommen.robert@gmail.com - 2013-12-24 08:07 -0800
  Re: Variables in a loop, Newby question Joel Goldstick <joel.goldstick@gmail.com> - 2013-12-24 11:20 -0500
  Re: Variables in a loop, Newby question "Tobias M." <tm@tobix.eu> - 2013-12-24 17:24 +0100
  Re: Variables in a loop, Newby question Peter Otten <__peter__@web.de> - 2013-12-24 17:29 +0100
  Re: Variables in a loop, Newby question bob gailer <bgailer@gmail.com> - 2013-12-24 12:26 -0500
  Re: Variables in a loop, Newby question vanommen.robert@gmail.com - 2013-12-24 09:54 -0800
    Re: Variables in a loop, Newby question Joel Goldstick <joel.goldstick@gmail.com> - 2013-12-24 13:10 -0500
    Re: Variables in a loop, Newby question Dave Angel <davea@davea.name> - 2013-12-24 13:42 -0500
    Re: Variables in a loop, Newby question Dennis Lee Bieber <wlfraed@ix.netcom.com> - 2013-12-25 13:35 -0500
  Re: Variables in a loop, Newby question vanommen.robert@gmail.com - 2013-12-24 10:27 -0800
    Re: Variables in a loop, Newby question Denis McMahon <denismfmcmahon@gmail.com> - 2013-12-25 02:54 +0000
      Re: Variables in a loop, Newby question Cameron Simpson <cs@zip.com.au> - 2013-12-25 16:42 +1100
        Re: Variables in a loop, Newby question Denis McMahon <denismfmcmahon@gmail.com> - 2013-12-25 15:27 +0000
          Re: Variables in a loop, Newby question Cameron Simpson <cs@zip.com.au> - 2013-12-26 12:01 +1100
          Re: Variables in a loop, Newby question Chris Angelico <rosuav@gmail.com> - 2013-12-26 12:35 +1100
            Re: Variables in a loop, Newby question Steven D'Aprano <steve+comp.lang.python@pearwood.info> - 2013-12-26 16:41 +1100
              Re: Variables in a loop, Newby question Dave Angel <davea@davea.name> - 2013-12-26 03:14 -0500
              Re: Variables in a loop, Newby question Chris Angelico <rosuav@gmail.com> - 2013-12-26 19:24 +1100
    Re: Variables in a loop, Newby question Peter Otten <__peter__@web.de> - 2013-12-25 15:52 +0100
    Re: Variables in a loop, Newby question Michael Torrie <torriem@gmail.com> - 2013-12-25 23:34 -0700
  Re: Variables in a loop, Newby question Larry Hudson <orgnut@yahoo.com> - 2013-12-25 00:13 -0800
  Re: Variables in a loop, Newby question vanommen.robert@gmail.com - 2013-12-27 00:53 -0800
    Re: Variables in a loop, Newby question Dennis Lee Bieber <wlfraed@ix.netcom.com> - 2013-12-27 11:39 -0500

csiph-web