On Tue, Jun 13, 2017 at 12:00 PM 'mtherrell' via Python Programming for
Autodesk Maya <[email protected]> wrote:
> Sylvain,
>
> I would like to be able to get a maya standalone instance from within the
> Maya script editor, run a python function in that maya standalone instance,
> sending it arguments, and capture its return value in the maya script
> editor.
>
> is there a way to return an instance of maya standalone in the script
> editor something like this:
>
> import get_maya_inst as gmi
>
>
>
> my_args = 'anything'
>
>
>
> maya_inst = gmi.maya_inst()
>
> maya_inst.import_module('my_module_name')
>
>
> return_val = maya_inst.my_module_name.my_awesome_function(my_args)
>
>
> maya_inst = None #maya_inst released / quit through garbage collection
>
>
>
> print(return_val)
>
>
This can definitely be achieved if one wanted to write an abstraction over
that previous example of using subprocess. The abstraction would launch the
subprocess and provide a higher-level interface for running arbitrary
python commands that get communicated to the running process.
>
> Otherwise,
>
> Is there a way you could post a more generic and step by step demo of your
> example on how to achieve the original goals of sReinfrank's question?
>
>
>
> On Monday, May 11, 2009 at 10:53:20 AM UTC-7, Sylvain Berger wrote:
>>
>> I manage to do this... it is a bit complex to explain, so i'll try my
>> best.
>>
>> 1. Create a command calling mayapy.exe -m <script to run> <arguments>
>> 2. Create the script you are calling with mayapy.exe, in this script you
>> can grab the arguments sent to the script using sys.argv
>> example:
>> import sys
>> # store the arguments in variables
>> argument1 = sys.argv[1]
>> argument2 = sys.argv[2]
>> etc.
>>
>> 3. call the mayapy.exe command using subprocess. Here is part of my
>> script... Note that I am capturing the stdout and stderr of mayaPy so I can
>> diagnose problem more easily... you don't have to capture them.
>>
>> import subprocess
>> cmdAndArgs = 'mayapy.exe -m mayaPy.avol.batchExportInit
>> '+objExportedScene+' '+avolObj.NodeName+' '+camExportedScene+'
>> '+str(createPreviewRender)
>> tempFolder = os.path.dirname(objExportedScene)
>> # Create log file
>> sdtoutFile = r'%s\stdout.txt' %tempFolder
>> stderrFile = r'%s\sterr.txt' %tempFolder
>> outptr = file(sdtoutFile, 'w')
>> errptr = file(stderrFile, 'w')
>> # Call the subprocess using convenience method
>> startupinfo = subprocess.STARTUPINFO()
>> startupinfo.dwFlags = subprocess.STARTF_USESHOWWINDOW
>> retval = subprocess.call(cmdAndArgs, startupinfo=startupinfo, bufsize=0,
>> executable=None, stdin=None, stdout=outptr, stderr=errptr)
>> # Close log handles
>> errptr.close()
>> outptr.close()
>>
>>
>> This works fine for me... From maya I am exporting an object, I start a
>> maya in background using mayapy.exe, I cleanup the object, save it, etc.
>> In my case maya is loked because I am waiting for the stdout of the
>> subprocess, but if you send the process and don't wait for it, maya should
>> be free.
>>
>> Hope this helps
>>
>> On Sat, May 9, 2009 at 9:53 PM, sRheinfrank <[email protected]>
>> wrote:
>>
>>>
>>> Hi---I want to be able to capture arguments from a UI in a Maya
>>> session and send them to Mayapy to run in the background to keep from
>>> locking up the current session while waiting for the process to
>>> finish---
>>>
>>> Ideally, I could access mayapy through the Script Editor (through a
>>> system call) and also pass it arguments and the right module to
>>> process them and still be able to work in Maya while it's running in
>>> the background... I figure using the maya.standalone module would be a
>>> vital part of this, what I'm unclear on is just how to get it going
>>> purely by running a command from within Maya....
>>>
>>> Thanks!!
>>> -Steve
>>>
>>>
>>>
>>
>>
>> --
>> They say, "Evil prevails when good men fail to act." What they ought to
>> say is, "Evil prevails."
>> Nicolas Cage as Yuri Orlov in Lord of War.
>>
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