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Trouble with Multi-threading

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  Trouble with Multi-threading dan.rose@parker.com - 2013-12-10 11:21 -0500
    Re: Trouble with Multi-threading Roy Smith <roy@panix.com> - 2013-12-10 11:51 -0500
    Re: Trouble with Multi-threading Walter Hurry <walterhurry@lavabit.com> - 2013-12-10 17:57 +0000
      Re: Trouble with Multi-threading Steven D'Aprano <steve+comp.lang.python@pearwood.info> - 2013-12-11 10:37 +0000
        Re: Trouble with Multi-threading Steve Simmons <square.steve@gmail.com> - 2013-12-11 12:25 +0100
        Re: Trouble with Multi-threading Roy Smith <roy@panix.com> - 2013-12-11 21:00 -0500
          Re: Trouble with Multi-threading rusi <rustompmody@gmail.com> - 2013-12-11 20:26 -0800
            Re: Trouble with Multi-threading David Hutto <dwightdhutto@gmail.com> - 2013-12-12 00:39 -0500
          Re: Trouble with Multi-threading Steven D'Aprano <steve+comp.lang.python@pearwood.info> - 2013-12-12 10:48 +0000
    Re: Trouble with Multi-threading feedthetroll@gmx.de - 2013-12-10 11:43 -0800
    Re: Trouble with Multi-threading Steven D'Aprano <steve+comp.lang.python@pearwood.info> - 2013-12-11 10:50 +0000

#61480 — Trouble with Multi-threading

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I am running PYTHON 2.7.3 and executing a PYTHON program that uses 
multi-threading.  I am running this on a 64-bit Windows 2008 R2 server 
(Service Pack 1).

Three months ago, I was able to execute this program just fine.  I ran the 
program and opened Task Manager and verified that the program successfully 
obtained all of the multiple threads it requested.

Now, when I go to run this same program (no changes to the program), I am 
getting this message:

Python 2.7.3 (default, Apr 10 2012, 23:24:47) [MSC v.1500 64 bit (AMD64)] 
on win32
Type "copyright", "credits" or "license()" for more information.
>>> ================================ RESTART 
================================
>>> 
<multiprocessing.queues.Queue object at 0x00000000042309E8>
>>> 

I look in Task Manager and I don't see any threads for PYTHON.

So, I am hoping that somebody in this forum could help me out.

What is it that I should look for or turn on to find out what is blocking 
this program from creating the threads.

---------------------------------------------------------------------------
 Daniel Rose
 IT Technical Analyst, MSS Development
 Parker Hannifin Corporation
 dan.rose@parker.com
 216-896-3351

"PLEASE NOTE: The preceding information may be confidential or
privileged. It only should be used or disseminated for the purpose
of conducting business with Parker. If you are not an intended
recipient, please notify the sender by replying to this message and
then delete the information from your system. Thank you for your
cooperation."

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#61483

In article <mailman.3837.1386693350.18130.python-list@python.org>,
 dan.rose@parker.com wrote:

> "PLEASE NOTE: The preceding information may be confidential or
> privileged. It only should be used or disseminated for the purpose
> of conducting business with Parker. If you are not an intended
> recipient, please notify the sender by replying to this message and
> then delete the information from your system. Thank you for your
> cooperation."

Dan,

Pursuant to your legal notice, I hereby inform you that I received your 
message in error.  Unfortunately, I am unable to delete it from my 
system since I do not control my ISP's news server (and Time Machine has 
probably backed up a copy of the local temp file anyway).  Please advise 
on how I should proceed, so that I am fully in compliance with your 
information confidentiality policy.

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#61491

On Tue, 10 Dec 2013 11:21:32 -0500, dan.rose wrote:

> "PLEASE NOTE: The preceding information may be confidential or
> privileged. It only should be used or disseminated for the purpose of
> conducting business with Parker. If you are not an intended recipient,
> please notify the sender by replying to this message and then delete the
> information from your system. Thank you for your cooperation."

Regretfully I am unable to delete the message from my Usenet provider's 
servers.

However, in accordance with your request I have expunged the body of your 
request so as to avoid disseminating it.

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#61545

On Tue, 10 Dec 2013 17:57:50 +0000, Walter Hurry wrote:

> On Tue, 10 Dec 2013 11:21:32 -0500, dan.rose wrote:
> 
>> "PLEASE NOTE: The preceding information may be confidential or
>> privileged. It only should be used or disseminated for the purpose of
>> conducting business with Parker. If you are not an intended recipient,
>> please notify the sender by replying to this message and then delete
>> the information from your system. Thank you for your cooperation."
> 
> Regretfully I am unable to delete the message from my Usenet provider's
> servers.
> 
> However, in accordance with your request I have expunged the body of
> your request so as to avoid disseminating it.

When did this forum become so intolerant of even the tiniest, most minor 
breaches of old-school tech etiquette? Have we really got nothing better 
to do than to go on the war path over such trivial issues? Out of five 
responses to the Original Poster's email, there was *one* helpful reply, 
followed by no fewer than four people playing "Stacks on the n00b" making 
the same comment about being unable to delete the message. I'm sure all 
four of you think you are ever such wits, but you're only half right.

Walter, you and I both know that such legal disclaimers are pointless and 
unenforceable. But you are guilty of misrepresenting what it says, and 
hence make yourself out to be a Grade A Dick. The disclaimer does not say 
"Everybody who receives this message must delete it from servers they 
don't control." That truly would display galactic-level stupidity. But it 
doesn't say that.

As a subscriber to the mailing list and/or newsgroup which Dan's message 
was sent to, you *are* an intended recipient. The disclaimer says that 
those who are *not* intended recipients should delete it from THEIR 
systems, not that those who *are* intended recipients should delete it 
from systems belonging to OTHERS. Duh.

As programmers, we should be able to correctly interpret the boolean 
logic in the disclaimer. Surely you know how to read, and interpret, a 
set of plain English functional requirements? 

- It doesn't say that the message "is" confidential, it says it *may* be, 
which is a correct statement regardless of the actual confidentially of 
the message.

- It doesn't demand that the message "must" be used only for certain 
purposes, but only that it *should* be so used -- again, a statement of 
intention which is correct.

- Lastly, it doesn't pretend to be able to compel the recipient into any 
particular action, but merely *requests* that they not be a dick about 
confidential or privileged emails which they receive by mistake. And even 
thanks them in advance for their (presumed) cooperation.

We shouldn't be giving a newcomer to this group a hard time over 
something which (1) he has little control over, (2) which isn't actually 
factually incorrect in any way, and (3) in the grand scheme of things 
isn't that bad a breach of etiquette.

I'm really getting cheesed off at the intolerance and nastiness being 
displayed on this list. I'm not aiming this specifically at you, Walter, 
you're not even close to one of the worst culprits. This isn't 
comp.lang.c, if you want a forum for arrogant elitists who look for any 
petty excuse to bash newcomers, take it elsewhere. I've been a regular 
here for over seven years, possibly longer, and the level of 
unpleasantness is at an all-time high, and the level of usefulness is 
lower than I've ever seen it before.



-- 
Steven

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#61552

On 11/12/2013 11:37, Steven D'Aprano wrote:
> When did this forum become so intolerant of even the tiniest, most 
> minor breaches of old-school tech etiquette? 
[... Giant Snip...]

Well said Steven.  I've only been member of this list for (maybe) a 
year, mainly lurking to learn about Python and I also feel that the 
balance between quality answers and sniping/arguing has definitely 
tilted in the wrong direction.  I'd very much like to see the original 
mood restored.

SteveS

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#61646

In article <52a84061$0$29992$c3e8da3$5496439d@news.astraweb.com>,
 Steven D'Aprano <steve+comp.lang.python@pearwood.info> wrote:

> When did this forum become so intolerant of even the tiniest, most minor 
> breaches of old-school tech etiquette? Have we really got nothing better 
> to do than to go on the war path over such trivial issues? Out of five 
> responses to the Original Poster's email, there was *one* helpful reply, 
> followed by no fewer than four people playing "Stacks on the n00b" making 
> the same comment about being unable to delete the message. I'm sure all 
> four of you think you are ever such wits, but you're only half right.

I believe I started off the chain of responses you're referring to.  I 
meant it semi-humorously, but also with a point.  It is clear it turned 
out to be harmful, and for that I apologize.

I share your dismay at where this group is going, and feel bad that I 
inadvertently moved it further in that direction.

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#61659

On Thursday, December 12, 2013 7:30:38 AM UTC+5:30, Roy Smith wrote:
> In article Steven D'Aprano  wrote:

> > When did this forum become so intolerant of even the tiniest, most minor 
> > breaches of old-school tech etiquette? Have we really got nothing better 
> > to do than to go on the war path over such trivial issues? Out of five 
> > responses to the Original Poster's email, there was *one* helpful reply, 
> > followed by no fewer than four people playing "Stacks on the n00b" making 
> > the same comment about being unable to delete the message. I'm sure all 
> > four of you think you are ever such wits, but you're only half right.

> I believe I started off the chain of responses you're referring to.  I 
> meant it semi-humorously, but also with a point.  It is clear it turned 
> out to be harmful, and for that I apologize.

Sniping at someone -- especially a newcomer -- for a piece of technical
irrelevantia is unfortunate. However your semi-humorous pointing out
was good because it shows that all posting methods have their hiccups:

html mail
undesired and nonsensical footers
reply/reply-all mixups
repeated posts
long and double-spaced lines
others Ive missed

Reminds me that sometime ago when GG was habitually double-posting,
Steven started quadruple-posting, giving some of us a rare leg-pulling
opportunity :D

> I share your dismay at where this group is going, and feel bad that I 
> inadvertently moved it further in that direction.

Unnecessary and uncalled for irascibility is of course a degradation.

But (from my pov) a bunch of people -- especially so-called techies --
unable to distinguish the following 3 is a much bigger degradation.

1 Problems caused by conscious malefic intent
2 Kids/noobs/ignoramuses/immature just being themselves
3 Problems of communication technology

Conflating 1,3 with 2 will drive many of them (2s) away which is a
significant loss for the community

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#61664

[Multipart message — attachments visible in raw view] — view raw

If you really want to have a discussion on multi-threading, then look at
quantum bits/computers, and let's see where python can go from the real
future of prototyping language, to the expert in it.



On Wed, Dec 11, 2013 at 11:26 PM, rusi <rustompmody@gmail.com> wrote:

> On Thursday, December 12, 2013 7:30:38 AM UTC+5:30, Roy Smith wrote:
> > In article Steven D'Aprano  wrote:
>
> > > When did this forum become so intolerant of even the tiniest, most
> minor
> > > breaches of old-school tech etiquette? Have we really got nothing
> better
> > > to do than to go on the war path over such trivial issues? Out of five
> > > responses to the Original Poster's email, there was *one* helpful
> reply,
> > > followed by no fewer than four people playing "Stacks on the n00b"
> making
> > > the same comment about being unable to delete the message. I'm sure all
> > > four of you think you are ever such wits, but you're only half right.
>
> > I believe I started off the chain of responses you're referring to.  I
> > meant it semi-humorously, but also with a point.  It is clear it turned
> > out to be harmful, and for that I apologize.
>
> Sniping at someone -- especially a newcomer -- for a piece of technical
> irrelevantia is unfortunate. However your semi-humorous pointing out
> was good because it shows that all posting methods have their hiccups:
>
> html mail
> undesired and nonsensical footers
> reply/reply-all mixups
> repeated posts
> long and double-spaced lines
> others Ive missed
>
> Reminds me that sometime ago when GG was habitually double-posting,
> Steven started quadruple-posting, giving some of us a rare leg-pulling
> opportunity :D
>
> > I share your dismay at where this group is going, and feel bad that I
> > inadvertently moved it further in that direction.
>
> Unnecessary and uncalled for irascibility is of course a degradation.
>
> But (from my pov) a bunch of people -- especially so-called techies --
> unable to distinguish the following 3 is a much bigger degradation.
>
> 1 Problems caused by conscious malefic intent
> 2 Kids/noobs/ignoramuses/immature just being themselves
> 3 Problems of communication technology
>
> Conflating 1,3 with 2 will drive many of them (2s) away which is a
> significant loss for the community
> --
> https://mail.python.org/mailman/listinfo/python-list
>



-- 
Best Regards,
David Hutto
*CEO:* *http://www.hitwebdevelopment.com <http://www.hitwebdevelopment.com>*

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#61694

On Wed, 11 Dec 2013 21:00:38 -0500, Roy Smith wrote:

> I believe I started off the chain of responses you're referring to.  I 
> meant it semi-humorously, but also with a point.  It is clear it turned 
> out to be harmful, and for that I apologize.
> 
> I share your dismay at where this group is going, and feel bad that I
> inadvertently moved it further in that direction.

Apology accepted. We're all only human. Except for 88888 Dihedral.



-- 
Steven

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#61498

Am Dienstag, 10. Dezember 2013 17:21:32 UTC+1 schrieb dan....@parker.com:
> "PLEASE NOTE: The preceding information may be confidential or
> privileged. It only should be used or disseminated for the purpose
> of conducting business with Parker. If you are not an intended
> recipient, please notify the sender by replying to this message and
> then delete the information from your system. Thank you for your
> cooperation."

As the above clause demands I hereby inform you, that I am - presumably  - not an intended recipient, because I am - as far as I know - not in any business with whatever Parker.
Nevertheless I am very sorry, but I am not able to delete the message. Neither from the usenet nor from Google-Groups.

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#61548

On Tue, 10 Dec 2013 11:21:32 -0500, dan.rose wrote:

> I am running PYTHON 2.7.3 and executing a PYTHON program that uses
> multi-threading.  I am running this on a 64-bit Windows 2008 R2 server
> (Service Pack 1).

Hi Dan, and despite the emails from a few others, welcome. My further 
comments below, interleaved with your questions.


> Three months ago, I was able to execute this program just fine.  I ran
> the program and opened Task Manager and verified that the program
> successfully obtained all of the multiple threads it requested.

Sounds great, but unfortunately you don't actually show us the program, 
so there's very little we can say about it.

If possible, please show us the actual program. If not, please try to 
show us a simplified version which still displays the fault. If you can't 
do that, at least tell us what result you expect, and what result you 
actually get.

Are you sure you're talking about multi-threading? Do you perhaps mean 
multi-processing? I'm not a Windows user, but I would expect that only 
independent processes show up in Task Manager, not threads within a 
single process.


> Now, when I go to run this same program (no changes to the program), I
> am getting this message:

If nothing has changed with the program, it's unlikely that the behaviour 
will have changed. Since the behaviour has changed, something must be 
different. If not in the program itself, perhaps something in it's 
environment.


> Python 2.7.3 (default, Apr 10 2012, 23:24:47) [MSC v.1500 64 bit
> (AMD64)] on win32
> Type "copyright", "credits" or "license()" for more information.
>>>> ================================ RESTART
> ================================
>>>> 
> <multiprocessing.queues.Queue object at 0x00000000042309E8>

How are you running the program? If you are using IDLE, the first step 
when you run into problems is to *not* use IDLE. Instead of running the 
program through the interactive IDLE environment, I recommend you try 
running it directly in Python via the command line and see if the error 
persists. Do you know how to do this or do you need help?

Lastly, Dan, if you don't mind I'd like to make a couple of requests. 
This forum is both an email mailing list and a text-only Usenet news 
group, were so-called "Rich Text" (actually HTML) emails are frowned 
upon. If you don't mind, please disable "Rich Text" when sending messages 
to this group, as many people get annoyed having to deal with posts like 
yours that include content like:

<br><font size=2 face="sans-serif">

Also, if there's any way to drop the legal disclaimer when sending here, 
that too would be appreciated.

Thanks for your cooperation, and feel free to ask any further questions, 
hopefully you'll get a few more useful responses next time.


Regards,



-- 
Steven

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