Maya: Add MayaPy application.

[tokejepsen]

Changelog Description

This adds mayapy to the application to be launched from a task.

Testing notes:

1. Setup project with MayaPy as application
2. Launch MayaPy
3. In console window execute:

import maya.standalone
maya.standalone.initialize()

[tokejepsen]

Split from #5644

[BigRoy]

Having the duplicated environment in settings for these does seem a bit unfortunate because you might rarely want to differentiate that with your Maya envs themselves, so now you'd need to manage both?

I know these are for testing but we've always used this "Debug Shell" launcher action which creates a command line shell with the os.environ similar to how you'd usually launch the application. This then works for any of the hosts, and then due to how it sets things up you can just type mayapy to launch e.g. MayaPy in the maya environment. Different use case maybe - but maybe it can help testing too in a way.

[BigRoy]

Is this PR missing AYON settings?

[BigRoy]

In console window execute from maya import cmds.

If I'm not mistaken that actually doesn't do much - the cmds module will be empty as far as I know until you run:

import maya.standalone
maya.standalone.initialize()

That'd also actually start the OpenPype Maya host install process so might be good to test with too to see if any errors occur with mayapy.

[moonyuet]

Code looks good for me except for the small mistake on the setting for 2023
Is it also gonna be added into the AYON setting?

[moonyuet]

In console window execute from maya import cmds.

If I'm not mistaken that actually doesn't do much - the cmds module will be empty as far as I know until you run:

import maya.standalone
maya.standalone.initialize()

That'd also actually start the OpenPype Maya host install process so might be good to test with too to see if any errors occur with mayapy.

I think it might work without maya.standalone.initialize() but I agree that we need to check if any errors occurred when mayapy started.
The screenscapture below is the mayapy executed from the OP launcher.

[BigRoy]

Without initialize the maya.cmds module exists, but is empty, e.g. the file command maya.cmds.file I believe does not exist until initialized. I might be wrong though. 🗡️

[moonyuet]

Without initialize the maya.cmds module exists, but is empty, e.g. the file command maya.cmds.file I believe does not exist until initialized. I might be wrong though. 🗡️

maybe you are right.......

cmds.ls() works after initialization

[moonyuet]

Looks good for me

[antirotor]

this is wrong, it should be mayapy - now it is breaking AYON default settings