Maya In Batch Mode

[PBL_Kiran]

I just want to know how to open maya in batch mode and perform some
multiple tasks on multiple files...

It should be a standalone application...

Ex : open every file in batch mode and create a sphere and save it.

[Shawn Patapoff]

http://download.autodesk.com/us/maya/2011help/API/hello_world_8py-example.html is something that I've been referencing.

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[Chad Dombrova]

http://download.autodesk.com/us/maya/2011help/API/hello_world_8py-example.html is something that I've been referencing.

keep in mind that this example actually differs quite a bit from maya -batch or maya -prompt since it does not initialize any of the mel scripts that maya normally does (no plugins loaded, minimal optionVars, no user prefs, etc).  IMHO, the best way to run a python script that simulates maya -batch is to import pymel.core, although there is some overhead from the extra initialization.  it's also nice because you can write a script that works both in batch mode and in gui mode with no extra code.

-chad

 

On Mon, Apr 25, 2011 at 11:56 PM, PBL_Kiran <pblnra...@gmail.com> wrote:

I just want to know how to open maya in batch mode and perform some
multiple tasks on multiple files...

It should be a standalone application...

Ex : open every file in batch mode and create a sphere and save it.

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[Chad Dombrova]

had a request for what this would look like using pymel:

import pymel.core as pm

import sys

def main( argv = None ):

        print "Hello world!"

        

if __name__ == "__main__":

    main()

honestly, i have no idea why that example uses MGlobal.executeCommand. by default print goes to sys.stdout. in gui mode sys.stdout goes to the script editor and you must use sys.__stdout__  to write to the console/shell/terminal, but in batch mode everything goes to the shell.

also, if you're on linux or osx you can add this to the top of your file:

#!/usr/bin/env mayapy

then:

chmod 777 myfile.py

 

as long as mayapy is on the PATH you can now execute your script directly like this:

./myfile.py

instead of like this:

mayapy mayfile.py

-chad

-chad

[Chad Dombrova]

one more thing: the example forgot to pass along sys.argv:

 

import pymel.core as pm

import sys

def main( *args ):

        print "Hello world!", args

        

if __name__ == "__main__":

    main(sys.argv[1:])

sys.argv[0] is the path of the file being executed exactly how it was executed (i.e. it may look like "../../myfile.py" if that's the path that was passed to python), or if using "python -c" it will contain "-c".

-chad

[PBL_Kiran]

Chad,

I am a bit confused....

Could u just give me script with script filename to execute maya in
batch and create a sphere and save the file.

So that i will just copy the script and save it as prescribed filename
and then execute....

Ex:

Filename : xyz.py

import abc as xyz
...
...
...

[wynan...@gmail.com]

yes please!

I really want to get into running maya in batch, so that I can do a procedures to multiple files.
Thanks

[Marcus Ottosson]

What is this in response to? :O

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[wynan...@gmail.com]

I replied to PBLNRAO Kiran.
I have solved my issue to a degree, by running a mel script.

//batchExportFBX.mel

//Get the folder with the animations to process
$folder = "C:/animations/SOURCE/";

//Get the files within that folder
$files = `getFileList -filespec "*.m*"
-folder $folder`;

//check there are files in the folder
if ($files[0] == "") {
error ("There are no animations in " + $folder + " folder!");
}
//Loop through each file in folder
for ($filename in $files){
//Open file
file -open -f -loadReferenceDepth "all" ($folder+$filename);
//RUN ExportFBX.mel on each file
source "c:/Scripts/ExportFBX.mel";
}

I would prefer it to not have to run it through the script editor, as it would be more efficient to not open up maya at all, but I don't know how to do that. please help!
Thanks