How to get Windows physical RAM using python?

[Mark]

Thanks.

[Mark]

Re: How to get Windows physical RAM using python?

OK, How to check the amount of Windows physical RAM using python?

Mark wrote:[color=blue]
> Thanks.
>[/color]

[Martin v. Löwis]

Re: How to get Windows physical RAM using python?

Mark wrote:
[color=blue]
> OK, How to check the amount of Windows physical RAM using python?[/color]

You should call the GlobalMemorySta tus(Ex) function. To my knowledge,
there is no Python wrapper for it, yet, so you would need to write one.

Regards,
Martin

[Dan Bishop]

Re: How to get Windows physical RAM using python?

Mark <nbdy9@hotmail. com.nospam> wrote in message news:<bg92o2$on r$1@news3.bu.ed u>...[color=blue]
> OK, How to check the amount of Windows physical RAM using python?[/color]

The easiest way is to parse the output from $WINDIR/system32/mem.exe .

memTotals = os.popen('mem | find "total"').readl ines()
conventionalMem ory = int(memTotals[0].split()[0])
extendedMemory = int(memTotals[1].split()[0])

[Gisle Vanem]

Re: How to get Windows physical RAM using python?

"Dan Bishop" <danb_83@yahoo. com> wrote:
[color=blue]
> The easiest way is to parse the output from $WINDIR/system32/mem.exe .
>
> memTotals = os.popen('mem | find "total"').readl ines()
> conventionalMem ory = int(memTotals[0].split()[0])
> extendedMemory = int(memTotals[1].split()[0])[/color]

Duh! That program reports the memory available to 16-bit
programs.

--gv

[Thomas Heller]

Re: How to get Windows physical RAM using python?

"Martin v. Löwis" <martin@v.loewi s.de> writes:
[color=blue]
> Mark wrote:
>[color=green]
>> OK, How to check the amount of Windows physical RAM using python?[/color]
>
> You should call the GlobalMemorySta tus(Ex) function. To my knowledge,
> there is no Python wrapper for it, yet, so you would need to write one.[/color]

Here's a ctypes wrapper for the GlobalMemorySta tus function. If you have
more than 2GB of ram, you should use GlobalMemorySta tusEx instead:

Python 2.3 (#46, Jul 29 2003, 18:54:32) [MSC v.1200 32 bit (Intel)] on win32
Type "help", "copyright" , "credits" or "license" for more information.[color=blue][color=green][color=darkred]
>>> from ctypes import *
>>> from ctypes.wintypes import DWORD
>>>
>>> SIZE_T = c_ulong
>>>
>>> class _MEMORYSTATUS(S tructure):[/color][/color][/color]
.... _fields_ = [("dwLength", DWORD),
.... ("dwMemoryLengt h", DWORD),
.... ("dwTotalPhy s", SIZE_T),
.... ("dwAvailPhy s", SIZE_T),
.... ("dwTotalPageFi le", SIZE_T),
.... ("dwAvailPageFi le", SIZE_T),
.... ("dwTotalVirtua l", SIZE_T),
.... ("dwAvailVirtua lPhys", SIZE_T)]
.... def show(self):
.... for field_name, field_type in self._fields_:
.... print field_name, getattr(self, field_name)
....[color=blue][color=green][color=darkred]
>>> memstatus = _MEMORYSTATUS()
>>> windll.kernel32 .GlobalMemorySt atus(byref(mems tatus))[/color][/color][/color]
2147483647[color=blue][color=green][color=darkred]
>>> memstatus.show( )[/color][/color][/color]
dwLength 32
dwMemoryLength 47
dwTotalPhys 535609344
dwAvailPhys 281993216
dwTotalPageFile 907055104
dwAvailPageFile 720285696
dwTotalVirtual 2147352576
dwAvailVirtualP hys 2117312512[color=blue][color=green][color=darkred]
>>>[/color][/color][/color]

Thomas

[Seo Sanghyeon]

Re: How to get Windows physical RAM using python?

Mark wrote:[color=blue]
> OK, How to check the amount of Windows physical RAM using python?[/color]

Martin v. Lowis wrote:[color=blue]
> You should call the GlobalMemorySta tus(Ex) function. To my knowledge,
> there is no Python wrapper for it, yet, so you would need to write one.[/color]

So let's write one in Python in a minute!

---- winmem.py
from ctypes import *
from ctypes.wintypes import *

class MEMORYSTATUS(St ructure):
_fields_ = [
('dwLength', DWORD),
('dwMemoryLoad' , DWORD),
('dwTotalPhys', DWORD),
('dwAvailPhys', DWORD),
('dwTotalPageFi le', DWORD),
('dwAvailPageFi le', DWORD),
('dwTotalVirtua l', DWORD),
('dwAvailVirtua l', DWORD),
]

def winmem():
x = MEMORYSTATUS()
windll.kernel32 .GlobalMemorySt atus(byref(x))
return x

---- in your code[color=blue][color=green][color=darkred]
>>> from winmem import winmem
>>> m = winmem()
>>> print '%d MB physical RAM left.' % (m.dwAvailPhys/1024**2)[/color][/color][/color]
90 MB physical RAM left.[color=blue][color=green][color=darkred]
>>>[/color][/color][/color]


Hail to ctypes!

If you have never heard of ctypes, visit
http://starship.python.net/crew/theller/ctypes/ and try it. You
will love it.

Seo Sanghyeon

[Tim Golden]

Re: How to get Windows physical RAM using python?

BranimirPetrovi c@yahoo.com (Branimir Petrovic) wrote in message news:<b11d1191. 0307301601.6745 0ca3@posting.go ogle.com>...[color=blue]
> "Martin v. Löwis" <martin@v.loewi s.de> wrote in message news:<bg920a$9p t$05$1@news.t-online.com>...[color=green]
> > Python can't get you Windows physical RAM. You have to order RAM
> > from a manufacturer or reseller if Windows needs more RAM :-)
> >
> > Regards,
> > Martin[/color]
>
> "Easy" way to get to physical RAM on Windows is via WMI objects.
>[/color]

And here's how you'd do it in Python:

1) Get WMI module from http://tgolden.sc.sabren.com/wmi.html

2) Do something like this:

<code>
import wmi

computer = wmi.WMI ()
for i in computer.Win32_ ComputerSystem ():
print i.Caption, "has", i.TotalPhysical Memory, "bytes of memory"
</code>

Obviously you can fiddle around with Megabytes and Gigabytes and so on
if you need to. The loop is a slight hack: you obviously only have one
computer system, but this interface to WMI always returns a list
(albeit of one value).

HTH
TJG

[Bengt Richter]

Re: How to get Windows physical RAM using python?

On Wed, 30 Jul 2003 23:04:56 +0200, =?ISO-8859-1?Q?=22Martin_v =2E_L=F6wis=22? = <martin@v.loewi s.de> wrote:
[color=blue]
>Mark wrote:
>[color=green]
>> OK, How to check the amount of Windows physical RAM using python?[/color]
>
>You should call the GlobalMemorySta tus(Ex) function. To my knowledge,
>there is no Python wrapper for it, yet, so you would need to write one.
>
>Regards,
>Martin
>[/color]
====< memorystatus.c >============== =============== =============== =
/*
** memorystatus.c
** Version 0.01 20030731 10:45:12 Bengt Richter bokr@oz.net
**
*/

#include "Python.h"
#include <windows.h>

static char doc_memstat[] =
"Returns list of 7 integers:\n"
" [0]: percent of memory in use\n"
" [1]: bytes of physical memory\n"
" [2]: free physical memory bytes\n"
" [3]: bytes of paging file\n"
" [4]: free bytes of paging file\n"
" [5]: user bytes of address space\n"
" [6]: free user bytes\n";

static PyObject *
memorystatus_me mstat(PyObject *self, PyObject *args)
{
PyObject *rv;
MEMORYSTATUS ms;
GlobalMemorySta tus( &ms );

if (!PyArg_ParseTu ple(args, "")) /* No arguments */
return NULL;
rv = Py_BuildValue("[i,i,i,i,i,i,i]",
ms.dwMemoryLoad , // percent of memory in use
ms.dwTotalPhys, // bytes of physical memory
ms.dwAvailPhys, // free physical memory bytes
ms.dwTotalPageF ile, // bytes of paging file
ms.dwAvailPageF ile, // free bytes of paging file
ms.dwTotalVirtu al, // user bytes of address space
ms.dwAvailVirtu al // free user bytes
);
return rv;
}

/* List of functions defined in the module */
static struct PyMethodDef memorystatus_mo dule_methods[] = {
{"memstat", memorystatus_me mstat, METH_VARARGS, doc_memstat},
{NULL, NULL} /* sentinel */
};


/* Initialization function for the module (*must* be called initmemorystatu s) */
static char doc_memorystatu s[] = "Get win32 memory status numbers (see memstat method)";

DL_EXPORT(void)
initmemorystatu s(void)
{
PyObject *m, *d, *x;

/* Create the module and add the functions */
m = Py_InitModule(" memorystatus", memorystatus_mo dule_methods);
d = PyModule_GetDic t(m);
x = PyString_FromSt ring(doc_memory status);
PyDict_SetItemS tring(d, "__doc__", x);
Py_XDECREF(x);
}
=============== =============== =============== =============== =======

You may find a little .cmd file like this (tailored to your system) handy:

[10:55] C:\pywk\ut\memo rystatus>type \util\mkpydll.c md
@cl -LD -nologo -Id:\python22\in clude %1.c -link -LIBPATH:D:\pyth on22\libs -export:init%1

[10:56] C:\pywk\ut\memo rystatus>mkpydl l memorystatus
memorystatus.c
Creating library memorystatus.li b and object memorystatus.ex p

[10:56] C:\pywk\ut\memo rystatus>python

(I'll indent this one space to avoid spurious quote highlights)

Python 2.2.2 (#37, Oct 14 2002, 17:02:34) [MSC 32 bit (Intel)] on win32
Type "help", "copyright" , "credits" or "license" for more information.[color=blue][color=green][color=darkred]
>>> import memorystatus
>>> help(memorystat us)[/color][/color][/color]
Help on module memorystatus:

NAME
memorystatus - Get win32 memory status numbers (see memstat method)

FILE
c:\pywk\ut\memo rystatus\memory status.dll

FUNCTIONS
memstat(...)
Returns list of 7 integers:
[0]: percent of memory in use
[1]: bytes of physical memory
[2]: free physical memory bytes
[3]: bytes of paging file
[4]: free bytes of paging file
[5]: user bytes of address space
[6]: free user bytes

DATA
__file__ = 'memorystatus.d ll'
__name__ = 'memorystatus'

[color=blue][color=green][color=darkred]
>>> memorystatus.me mstat()[/color][/color][/color]
[0, 334929920, 271536128, 942825472, 861339648, 2147352576, 2129780736]

Warning: Just now did this. Not tested beyond what you see!!

Regards,
Bengt Richter

[Bengt Richter]

Re: How to get Windows physical RAM using python?

On Fri, 01 Aug 2003 09:02:03 +1000, Mark Hammond <mhammond@skipp inet.com.au> wrote:
[color=blue]
>Why not submit that as a patch to win32all <wink>?
>
>Mark.
>[/color]
You mean just posting to c.l.py doesn't go anywhere? ;-)

Anyway, don't know how to submit path to win32all. Plus how do you test something like that?

Already the 0 for percentage of memory in use that I got seemed funny, but maybe
it's a percentage of total possible maxed-out page file virtual.

Seems like it needs a little ageing at least? I thought someone might spot something.

I meant to look into win32all, but this is all the further I got ;-/

03-05-31 16:24 3,971,152 E:\DownLoad\Pyt hon\win32all-152.exe

Regards,
Bengt Richter