1. say me dbf files count?
2. why dbf ?
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On Jun 21, 9:43 am, Чеширский Кот wrote:
> 1. say me dbf files count?
> 2. why dbf ?
It was just a test. It was the most compatible format I could get
between Python and the business application I work with without using
SQL servers and such.
Otherwise it's of no consequence. The final applicatio
> Jure Erznožnik (JE) wrote:
>JE> Digging further, I found this:
>JE>
>http://www.oreillynet.com/onlamp/blog/2005/10/does_python_have_a_concurrency.html
>JE> Looking up on this info, I found this:
>JE>
>http://docs.python.org/c-api/init.html#thread-state-and-the-global-interpreter-lock
>J
> Jure Erznožnik (JE) wrote:
>JE> Digging further, I found this:
>JE>
>http://www.oreillynet.com/onlamp/blog/2005/10/does_python_have_a_concurrency.html
>JE> Looking up on this info, I found this:
>JE>
>http://docs.python.org/c-api/init.html#thread-state-and-the-global-interpreter-lock
>J
On 2009-06-19, =?windows-1252?Q?Jure_Erzno=9Enik?=
wrote:
> If this is correct, no amount of threading would ever help in Python
> since only one core / CPU could *by design* ever be utilized. Except
> for the code that accesses *no* functions / memory at all.
Don't multithread...multiprocess.
Digging further, I found this:
http://www.oreillynet.com/onlamp/blog/2005/10/does_python_have_a_concurrency.html
Looking up on this info, I found this:
http://docs.python.org/c-api/init.html#thread-state-and-the-global-interpreter-lock
If this is correct, no amount of threading would ever help in
I've done some further testing on the subject:
I also added some calculations in the main loop to see what effect
they would have on speed. Of course, I also added the same
calculations to the single threaded functions.
They were simple summary functions, like average, sum, etc. Almost no
interact
Thanks for the suggestions.
I've been looking at the source code of threading support objects and
I saw that non-blocking requests in queues use events, while blocking
requests just use InterlockedExchange.
So plain old put/get is much faster and I've managed to confirm this
today with further test
> Jure Erznožnik (JE) wrote:
>JE> Hi,
>JE> I'm pretty new to Python (2.6) and I've run into a problem I just
>JE> can't seem to solve.
>JE> I'm using dbfpy to access DBF tables as part of a little test project.
>JE> I've programmed two separate functions, one that reads the DBF in main
>JE> t
Hi,
I'm pretty new to Python (2.6) and I've run into a problem I just
can't seem to solve.
I'm using dbfpy to access DBF tables as part of a little test project.
I've programmed two separate functions, one that reads the DBF in main
thread and the other which reads the DBF asynchronously in a separ
On Apr 16, 11:46 am, Piet van Oostrum wrote:
> > grocery_stocker (g) wrote:
> >g> [cdal...@localhost ~]$ python
> >g> Python 2.4.3 (#1, Oct 1 2006, 18:00:19)
> >g> [GCC 4.1.1 20060928 (Red Hat 4.1.1-28)] on linux2
> >g> Type "help", "copyright", "credits" or "license" for more information.
>
> grocery_stocker (g) wrote:
>g> [cdal...@localhost ~]$ python
>g> Python 2.4.3 (#1, Oct 1 2006, 18:00:19)
>g> [GCC 4.1.1 20060928 (Red Hat 4.1.1-28)] on linux2
>g> Type "help", "copyright", "credits" or "license" for more information.
> import Queue
> queue = Queue.Queue()
>
>>
I don't get how item = self.__queue.get() gets advanced to
if item is None:
in the following code.
>>> import time
>>> from threading import Thread
>>> import Queue
>>>
>>> WORKER = 2
>>>
>>> class Worker(Thread):
... def __init__(self, queue):
... Thread.__init__(self)
...
[Alex Martelli]
> ...
> not_empty and not_full are not methods but rather instances of the
> threading.Condition class, which gets waited on and notified
> appropriately. I'm not entirely sure exactly WHAT one is supposed to do
> with the Condition instances in question (I'm sure there is some des
Steve M <[EMAIL PROTECTED]> wrote:
> According to my "Python in a Nutshell":
>
> q.get(block=True)
>
> is the signature, so, as you use it above, the call will hang until
> something is on the queue. If block is false and the queue is empty,
> q.get() will raise the exception Empty.
>
> q.get_n
Ahh the penny has dropped at last. I am using the WingIDE and
.not_empty is one of the properties it exposes with it's intellisense.
As such its use is not documented. No problem.
Using the exception would more accurate - I can see that. In my simple
case the queue is a one to one link, into an
According to my "Python in a Nutshell":
q.get(block=True)
is the signature, so, as you use it above, the call will hang until
something is on the queue. If block is false and the queue is empty,
q.get() will raise the exception Empty.
q.get_nowait is apparently synonymous with q.get(block=False)
-
A two parter newbie question I am afraid.
Am I right in thinking that using something like ...
item = a_queue.get()
print item
will not print 'item' unless or until there is an item in the queue to
retrieve. Effectively stalling the thread at the .
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