昨日の投稿の作り物で頻繁にPYTHONPATHを確認していたので、プログラムで利用しそうな環境変数をログ出力するプログラムを用意しました。他にも良さそうな変数はあるかもですが、とりあえず便利です。

win / mac 両対応です。MAYA 2018 + MacOS Sierra および、 MAYA 2017 + Windows10 Pro で動作確認しました。コードは投稿の一番お尻に。

実行結果

特ににカスタマイズしてない状態で実行した結果を貼っておきます。MASHとXGEN関連が目立ちます。

Mac(MAYA2018)の出力

[MAYA_LOCATION] : 
	/Applications/Autodesk/maya2018/Maya.app/Contents

[MAYA_APP_DIR] : 
	/Users/ユーザ名/Library/Preferences/Autodesk/maya

[MAYA_SHELF_PATH] : 
	N/A

[MAYA_PRESET_PATH] : 
	
	/Applications/Autodesk/maya2018/plug-ins/ATF/presets
	/Applications/Autodesk/bifrost/maya2018/presets
	/Applications/Autodesk/maya2018/plug-ins/MASH/presets
	/Users/ユーザ名/Documents/maya_oreore_module1/presets
	/Applications/Autodesk/maya2018/plug-ins/fbx/presets
	/Applications/Houdini/Houdini16.5.323/Houdini Engine/maya/maya2018/presets
	/Applications/Autodesk/maya2018/plug-ins/camd/presets
	/Applications/solidangle/mtoa/2018/presets
	/Applications/Autodesk/maya2018/plug-ins/camd/presets
	/Applications/Autodesk/maya2018/plug-ins/camd/presets
	/Applications/Autodesk/maya2018/plug-ins/substance/presets
	/Applications/Autodesk/maya2018/plug-ins/xgen/presets

[XBMLANGPATH] : 
	/Users/ユーザ名/Library/Preferences/Autodesk/maya/2018/ja_JP/prefs/icons
	/Users/ユーザ名/Library/Preferences/Autodesk/maya/prefs/icons
	/Users/Shared/Autodesk/maya/2018/icons
	/Users/Shared/Autodesk/maya/icons
	/Applications/Autodesk/maya2018/Maya.app/Contents/icons
	/Applications/Autodesk/maya2018/Maya.app/Contents/app-defaults
	/Applications/Autodesk/maya2018/Maya.app/Contents/icons/paintEffects
	/Applications/Autodesk/maya2018/Maya.app/Contents/icons/fluidEffects
	/Applications/Autodesk/maya2018/Maya.app/Contents/icons/hair
	/Applications/Autodesk/maya2018/Maya.app/Contents/icons/cloth
	/Applications/Autodesk/maya2018/Maya.app/Contents/icons/live
	/Applications/Autodesk/maya2018/Maya.app/Contents/icons/fur
	/Applications/Autodesk/maya2018/Maya.app/Contents/icons/muscle
	/Applications/Autodesk/maya2018/Maya.app/Contents/icons/turtle
	/Applications/Autodesk/maya2018/Maya.app/Contents/icons/FBX
	/Applications/Autodesk/maya2018/Maya.app/Contents/icons/mayaHIK
	/Applications/Autodesk/maya2018/plug-ins/ATF/icons
	/Applications/Autodesk/bifrost/maya2018/icons
	/Applications/Autodesk/maya2018/plug-ins/MASH/icons
	/Users/ユーザ名/Documents/maya_oreore_module1/icons
	/Applications/Autodesk/maya2018/plug-ins/fbx/icons
	/Applications/Houdini/Houdini16.5.323/Houdini Engine/maya/maya2018/icons
	/Applications/Autodesk/maya2018/plug-ins/camd/icons
	/Applications/solidangle/mtoa/2018/icons
	/Applications/Autodesk/maya2018/plug-ins/camd/icons
	/Applications/Autodesk/maya2018/plug-ins/camd/icons
	/Applications/Autodesk/maya2018/plug-ins/substance/icons
	/Applications/Autodesk/maya2018/plug-ins/xgen/icons

[MAYA_SCRIPT_PATH] : 
	/Applications/solidangle/mtoa/2018/scripts/mtoa/2018/mel
	/Users/ユーザ名/Documents/maya/projects/default/scripts
	/Users/ユーザ名/Library/Preferences/Autodesk/maya/2018/ja_JP/scripts
	/Users/ユーザ名/Library/Preferences/Autodesk/maya/2018/scripts
	/Users/ユーザ名/Library/Preferences/Autodesk/maya/scripts
	/Users/ユーザ名/Library/Preferences/Autodesk/maya/2018/ja_JP/presets
	/Users/Shared/Autodesk/maya/2018/scripts
	/Users/Shared/Autodesk/maya/scripts
	/Users/ユーザ名/Library/Preferences/Autodesk/maya/2018/ja_JP/prefs/shelves
	/Users/ユーザ名/Library/Preferences/Autodesk/maya/2018/ja_JP/prefs/markingMenus
	/Users/ユーザ名/Library/Preferences/Autodesk/maya/2018/ja_JP/prefs/scripts
	/Applications/Autodesk/maya2018/Maya.app/Contents/scripts
	/Applications/Autodesk/maya2018/Maya.app/Contents/scripts/startup
	/Applications/Autodesk/maya2018/Maya.app/Contents/scripts/shelves
	/Applications/Autodesk/maya2018/Maya.app/Contents/scripts/others
	/Applications/Autodesk/maya2018/Maya.app/Contents/scripts/AETemplates
	/Applications/Autodesk/maya2018/Maya.app/Contents/scripts/unsupported
	/Applications/Autodesk/maya2018/Maya.app/Contents/scripts/paintEffects
	/Applications/Autodesk/maya2018/Maya.app/Contents/scripts/fluidEffects
	/Applications/Autodesk/maya2018/Maya.app/Contents/scripts/hair
	/Applications/Autodesk/maya2018/Maya.app/Contents/scripts/cloth
	/Applications/Autodesk/maya2018/Maya.app/Contents/scripts/live
	/Applications/Autodesk/maya2018/Maya.app/Contents/scripts/fur
	/Applications/Autodesk/maya2018/Maya.app/Contents/scripts/muscle
	/Applications/Autodesk/maya2018/Maya.app/Contents/scripts/turtle
	/Applications/Autodesk/maya2018/Maya.app/Contents/scripts/FBX
	/Applications/Autodesk/maya2018/Maya.app/Contents/scripts/mayaHIK
	/Applications/Autodesk/maya2018/plug-ins/ATF/scripts
	/Applications/Autodesk/bifrost/maya2018/scripts/boss
	/Applications/Autodesk/bifrost/maya2018/scripts/presets
	/Applications/Autodesk/bifrost/maya2018/scripts
	/Applications/Autodesk/maya2018/plug-ins/MASH/scripts/apiclient
	/Applications/Autodesk/maya2018/plug-ins/MASH/scripts/flux
	/Applications/Autodesk/maya2018/plug-ins/MASH/scripts/googleapiclient
	/Applications/Autodesk/maya2018/plug-ins/MASH/scripts/httplib2
	/Applications/Autodesk/maya2018/plug-ins/MASH/scripts/MASH
	/Applications/Autodesk/maya2018/plug-ins/MASH/scripts/MASHAET
	/Applications/Autodesk/maya2018/plug-ins/MASH/scripts/MayaToAE
	/Applications/Autodesk/maya2018/plug-ins/MASH/scripts/oauth2client
	/Applications/Autodesk/maya2018/plug-ins/MASH/scripts/uritemplate
	/Applications/Autodesk/maya2018/plug-ins/MASH/scripts/flux/ae
	/Applications/Autodesk/maya2018/plug-ins/MASH/scripts/flux/resources
	/Applications/Autodesk/maya2018/plug-ins/MASH/scripts/flux/ui
	/Applications/Autodesk/maya2018/plug-ins/MASH/scripts/flux/resources/icons
	/Applications/Autodesk/maya2018/plug-ins/MASH/scripts
	/Users/ユーザ名/Documents/maya_oreore_module1/scripts
	/Applications/Autodesk/maya2018/plug-ins/fbx/scripts
	/Applications/Houdini/Houdini16.5.323/Houdini Engine/maya/maya2018/scripts
	/Applications/Autodesk/maya2018/plug-ins/camd/scripts
	/Applications/solidangle/mtoa/2018/scripts
	/Applications/Autodesk/maya2018/plug-ins/camd/scripts
	/Applications/Autodesk/maya2018/plug-ins/camd/scripts
	/Applications/Autodesk/maya2018/plug-ins/substance/scripts
	/Applications/Autodesk/maya2018/plug-ins/xgen/scripts/cafm
	/Applications/Autodesk/maya2018/plug-ins/xgen/scripts/xgenm
	/Applications/Autodesk/maya2018/plug-ins/xgen/scripts/xgenm/ui
	/Applications/Autodesk/maya2018/plug-ins/xgen/scripts/xgenm/xmaya
	/Applications/Autodesk/maya2018/plug-ins/xgen/scripts/xgenm/ui/ae
	/Applications/Autodesk/maya2018/plug-ins/xgen/scripts/xgenm/ui/brushes
	/Applications/Autodesk/maya2018/plug-ins/xgen/scripts/xgenm/ui/dialogs
	/Applications/Autodesk/maya2018/plug-ins/xgen/scripts/xgenm/ui/fxmodules
	/Applications/Autodesk/maya2018/plug-ins/xgen/scripts/xgenm/ui/tabs
	/Applications/Autodesk/maya2018/plug-ins/xgen/scripts/xgenm/ui/util
	/Applications/Autodesk/maya2018/plug-ins/xgen/scripts/xgenm/ui/widgets
	/Applications/Autodesk/maya2018/plug-ins/xgen/scripts
	/Applications/solidangle/mtoa/2018/scripts/mtoa/mel

[MAYA_MODULE_PATH] : 
	/Applications/Autodesk/maya2018/Maya.app/Contents/modules
	/Users/ユーザ名/Library/Preferences/Autodesk/maya/2018/modules
	/Users/ユーザ名/Library/Preferences/Autodesk/maya/modules
	/Users/Shared/Autodesk/modules/maya/2018
	/Users/Shared/Autodesk/modules/maya

[MAYA_PLUG_IN_PATH] : 
	/Users/ユーザ名/Library/Preferences/Autodesk/maya/2018/plug-ins
	/Users/ユーザ名/Library/Preferences/Autodesk/maya/2018/plug-ins
	/Users/ユーザ名/Library/Preferences/Autodesk/maya/plug-ins
	/Users/Shared/Autodesk/maya/2018/plug-ins
	/Users/Shared/Autodesk/maya/plug-ins
	/Applications/Autodesk/maya2018/Maya.app/Contents/MacOS/plug-ins
	/Applications/Autodesk/maya2018/plug-ins/ATF/plug-ins
	/Applications/Autodesk/bifrost/maya2018/plug-ins
	/Applications/Autodesk/maya2018/plug-ins/MASH/plug-ins
	/Users/ユーザ名/Documents/maya_oreore_module1/plug-ins
	/Applications/Autodesk/maya2018/plug-ins/fbx/plug-ins
	/Applications/Houdini/Houdini16.5.323/Houdini Engine/maya/maya2018/plug-ins
	/Applications/Autodesk/maya2018/plug-ins/camd/plug-ins
	/Applications/solidangle/mtoa/2018/plug-ins
	/Applications/Autodesk/maya2018/plug-ins/camd/plug-ins
	/Applications/Autodesk/maya2018/plug-ins/camd/plug-ins
	/Applications/Autodesk/maya2018/plug-ins/substance/plug-ins
	/Applications/Autodesk/maya2018/plug-ins/xgen/plug-ins

[PYTHONPATH] : 
	
	/Applications/Autodesk/maya2018/plug-ins/ATF/scripts
	/Applications/Autodesk/bifrost/maya2018/scripts/boss
	/Applications/Autodesk/bifrost/maya2018/scripts/presets
	/Applications/Autodesk/bifrost/maya2018/scripts
	/Applications/Autodesk/maya2018/plug-ins/MASH/scripts/apiclient
	/Applications/Autodesk/maya2018/plug-ins/MASH/scripts/flux
	/Applications/Autodesk/maya2018/plug-ins/MASH/scripts/googleapiclient
	/Applications/Autodesk/maya2018/plug-ins/MASH/scripts/httplib2
	/Applications/Autodesk/maya2018/plug-ins/MASH/scripts/MASH
	/Applications/Autodesk/maya2018/plug-ins/MASH/scripts/MASHAET
	/Applications/Autodesk/maya2018/plug-ins/MASH/scripts/MayaToAE
	/Applications/Autodesk/maya2018/plug-ins/MASH/scripts/oauth2client
	/Applications/Autodesk/maya2018/plug-ins/MASH/scripts/uritemplate
	/Applications/Autodesk/maya2018/plug-ins/MASH/scripts/flux/ae
	/Applications/Autodesk/maya2018/plug-ins/MASH/scripts/flux/resources
	/Applications/Autodesk/maya2018/plug-ins/MASH/scripts/flux/ui
	/Applications/Autodesk/maya2018/plug-ins/MASH/scripts/flux/resources/icons
	/Applications/Autodesk/maya2018/plug-ins/MASH/scripts
	/Users/ユーザ名/Documents/maya_oreore_module1/scripts
	/Applications/Autodesk/maya2018/plug-ins/fbx/scripts
	/Applications/Houdini/Houdini16.5.323/Houdini Engine/maya/maya2018/scripts
	/Applications/Autodesk/maya2018/plug-ins/camd/scripts
	/Applications/solidangle/mtoa/2018/scripts
	/Applications/Autodesk/maya2018/plug-ins/camd/scripts
	/Applications/Autodesk/maya2018/plug-ins/camd/scripts
	/Applications/Autodesk/maya2018/plug-ins/substance/scripts
	/Applications/Autodesk/maya2018/plug-ins/xgen/scripts/cafm
	/Applications/Autodesk/maya2018/plug-ins/xgen/scripts/xgenm
	/Applications/Autodesk/maya2018/plug-ins/xgen/scripts/xgenm/ui
	/Applications/Autodesk/maya2018/plug-ins/xgen/scripts/xgenm/xmaya
	/Applications/Autodesk/maya2018/plug-ins/xgen/scripts/xgenm/ui/ae
	/Applications/Autodesk/maya2018/plug-ins/xgen/scripts/xgenm/ui/brushes
	/Applications/Autodesk/maya2018/plug-ins/xgen/scripts/xgenm/ui/dialogs
	/Applications/Autodesk/maya2018/plug-ins/xgen/scripts/xgenm/ui/fxmodules
	/Applications/Autodesk/maya2018/plug-ins/xgen/scripts/xgenm/ui/tabs
	/Applications/Autodesk/maya2018/plug-ins/xgen/scripts/xgenm/ui/util
	/Applications/Autodesk/maya2018/plug-ins/xgen/scripts/xgenm/ui/widgets
	/Applications/Autodesk/maya2018/plug-ins/xgen/scripts
	/Users/ユーザ名/Documents/maya_oreore_module1/python

[MAYA_PROJECT] : 
	N/A

[MAYA_UI_LANGUAGE] : 
	N/A

[MAYA_CMD_FILE_OUTPUT] : 
	N/A

Windows10(MAYA2017)での実行結果

[MAYA_LOCATION] : 
	C:/Program Files/Autodesk/Maya2017

[MAYA_APP_DIR] : 
	C:/Users/ユーザ名/Documents/maya

[MAYA_SHELF_PATH] : 
	N/A

[MAYA_PRESET_PATH] : 
	
	C:/Program Files/Autodesk/Maya2017/plug-ins/ATF/presets
	C:/Program Files/Autodesk/Maya2017/plug-ins/bifrost/presets
	C:/Program Files/Autodesk/Maya2017/plug-ins/MASH/presets
	C:/Program Files/Autodesk/Maya2017/plug-ins/fbx/presets
	C:/Program Files/Autodesk/Maya2017/plug-ins/camd/presets
	C:/solidangle/mtoadeploy/2017/presets
	C:/Program Files/Autodesk/Maya2017/plug-ins/camd/presets
	C:/Program Files/Autodesk/Maya2017/plug-ins/camd/presets
	C:/Program Files/Autodesk/Maya2017/plug-ins/substance/presets
	C:/Program Files/Autodesk/Maya2017/plug-ins/xgen/presets

[XBMLANGPATH] : 
	C:/Users/ユーザ名/Documents/maya/2017/ja_JP/prefs/icons
	C:/Users/ユーザ名/Documents/maya/prefs/icons
	C:/ProgramData/Autodesk/maya/2017
	C:/Program Files/Autodesk/Maya2017/icons
	C:/Program Files/Autodesk/Maya2017/app-defaults
	C:/Program Files/Autodesk/Maya2017/icons/paintEffects
	C:/Program Files/Autodesk/Maya2017/icons/fluidEffects
	C:/Program Files/Autodesk/Maya2017/icons/hair
	C:/Program Files/Autodesk/Maya2017/icons/cloth
	C:/Program Files/Autodesk/Maya2017/icons/live
	C:/Program Files/Autodesk/Maya2017/icons/fur
	C:/Program Files/Autodesk/Maya2017/icons/muscle
	C:/Program Files/Autodesk/Maya2017/icons/turtle
	C:/Program Files/Autodesk/Maya2017/icons/FBX
	C:/Program Files/Autodesk/Maya2017/icons/mayaHIK
	C:/Program Files/Autodesk/Maya2017/plug-ins/ATF/icons
	C:/Program Files/Autodesk/Maya2017/plug-ins/bifrost/icons
	C:/Program Files/Autodesk/Maya2017/plug-ins/MASH/icons
	C:/Program Files/Autodesk/Maya2017/plug-ins/fbx/icons
	C:/Program Files/Autodesk/Maya2017/plug-ins/camd/icons
	C:/solidangle/mtoadeploy/2017/icons
	C:/Program Files/Autodesk/Maya2017/plug-ins/camd/icons
	C:/Program Files/Autodesk/Maya2017/plug-ins/camd/icons
	C:/Program Files/Autodesk/Maya2017/plug-ins/substance/icons
	C:/Program Files/Autodesk/Maya2017/plug-ins/xgen/icons

[MAYA_SCRIPT_PATH] : 
	C:/Users/ユーザ名/Documents/maya/projects/default/scripts
	C:/Users/ユーザ名/Documents/maya/2017/ja_JP/scripts
	C:/Users/ユーザ名/Documents/maya/2017/scripts
	C:/Users/ユーザ名/Documents/maya/scripts
	C:/Users/ユーザ名/Documents/maya/2017/ja_JP/presets
	C:/Users/ユーザ名/Documents/maya/2017/ja_JP/prefs/shelves
	C:/Users/ユーザ名/Documents/maya/2017/ja_JP/prefs/markingMenus
	C:/Users/ユーザ名/Documents/maya/2017/ja_JP/prefs/scripts
	C:/Program Files/Autodesk/Maya2017/scripts
	C:/Program Files/Autodesk/Maya2017/scripts/startup
	C:/Program Files/Autodesk/Maya2017/scripts/shelves
	C:/Program Files/Autodesk/Maya2017/scripts/others
	C:/Program Files/Autodesk/Maya2017/scripts/AETemplates
	C:/Program Files/Autodesk/Maya2017/scripts/unsupported
	C:/Program Files/Autodesk/Maya2017/scripts/paintEffects
	C:/Program Files/Autodesk/Maya2017/scripts/fluidEffects
	C:/Program Files/Autodesk/Maya2017/scripts/hair
	C:/Program Files/Autodesk/Maya2017/scripts/cloth
	C:/Program Files/Autodesk/Maya2017/scripts/live
	C:/Program Files/Autodesk/Maya2017/scripts/fur
	C:/Program Files/Autodesk/Maya2017/scripts/muscle
	C:/Program Files/Autodesk/Maya2017/scripts/turtle
	C:/Program Files/Autodesk/Maya2017/scripts/FBX
	C:/Program Files/Autodesk/Maya2017/scripts/mayaHIK
	C:/Program Files/Autodesk/Maya2017/plug-ins/ATF/scripts
	C:/Program Files/Autodesk/Maya2017/plug-ins/bifrost/scripts/boss
	C:/Program Files/Autodesk/Maya2017/plug-ins/bifrost/scripts/presets
	C:/Program Files/Autodesk/Maya2017/plug-ins/bifrost/scripts
	C:/Program Files/Autodesk/Maya2017/plug-ins/MASH/scripts
	C:/Program Files/Autodesk/Maya2017/plug-ins/fbx/scripts
	C:/Program Files/Autodesk/Maya2017/plug-ins/camd/scripts
	C:/solidangle/mtoadeploy/2017/scripts
	C:/Program Files/Autodesk/Maya2017/plug-ins/camd/scripts
	C:/Program Files/Autodesk/Maya2017/plug-ins/camd/scripts
	C:/Program Files/Autodesk/Maya2017/plug-ins/substance/scripts
	C:/Program Files/Autodesk/Maya2017/plug-ins/xgen/scripts/cafm
	C:/Program Files/Autodesk/Maya2017/plug-ins/xgen/scripts/xgenm
	C:/Program Files/Autodesk/Maya2017/plug-ins/xgen/scripts/xgenm/ui
	C:/Program Files/Autodesk/Maya2017/plug-ins/xgen/scripts/xgenm/xmaya
	C:/Program Files/Autodesk/Maya2017/plug-ins/xgen/scripts/xgenm/ui/ae
	C:/Program Files/Autodesk/Maya2017/plug-ins/xgen/scripts/xgenm/ui/brushes
	C:/Program Files/Autodesk/Maya2017/plug-ins/xgen/scripts/xgenm/ui/dialogs
	C:/Program Files/Autodesk/Maya2017/plug-ins/xgen/scripts/xgenm/ui/fxmodules
	C:/Program Files/Autodesk/Maya2017/plug-ins/xgen/scripts/xgenm/ui/tabs
	C:/Program Files/Autodesk/Maya2017/plug-ins/xgen/scripts/xgenm/ui/util
	C:/Program Files/Autodesk/Maya2017/plug-ins/xgen/scripts/xgenm/ui/widgets
	C:/Program Files/Autodesk/Maya2017/plug-ins/xgen/scripts

[MAYA_MODULE_PATH] : 
	C:/Program Files/Autodesk/Maya2017/modules
	C:/Users/ユーザ名/Documents/maya/2017/modules
	C:/Users/ユーザ名/Documents/maya/modules
	C:/Program Files/Common Files/Autodesk Shared/Modules/maya/2017

[MAYA_PLUG_IN_PATH] : 
	C:/Users/ユーザ名/Documents/maya/2017/plug-ins
	C:/Users/ユーザ名/Documents/maya/plug-ins
	C:/Program Files/Autodesk/Maya2017/bin/plug-ins
	C:/Program Files/Autodesk/Maya2017/plug-ins/ATF/plug-ins
	C:/Program Files/Autodesk/Maya2017/plug-ins/bifrost/plug-ins
	C:/Program Files/Autodesk/Maya2017/plug-ins/MASH/plug-ins
	C:/Program Files/Autodesk/Maya2017/plug-ins/fbx/plug-ins
	C:/Program Files/Autodesk/Maya2017/plug-ins/camd/plug-ins
	C:/solidangle/mtoadeploy/2017/plug-ins
	C:/Program Files/Autodesk/Maya2017/plug-ins/camd/plug-ins
	C:/Program Files/Autodesk/Maya2017/plug-ins/camd/plug-ins
	C:/Program Files/Autodesk/Maya2017/plug-ins/substance/plug-ins
	C:/Program Files/Autodesk/Maya2017/plug-ins/xgen/plug-ins

[PYTHONPATH] : 
	
	C:/Program Files/Autodesk/Maya2017/plug-ins/ATF/scripts
	C:/Program Files/Autodesk/Maya2017/plug-ins/bifrost/scripts/boss
	C:/Program Files/Autodesk/Maya2017/plug-ins/bifrost/scripts/presets
	C:/Program Files/Autodesk/Maya2017/plug-ins/bifrost/scripts
	C:/Program Files/Autodesk/Maya2017/plug-ins/MASH/scripts
	C:/Program Files/Autodesk/Maya2017/plug-ins/fbx/scripts
	C:/Program Files/Autodesk/Maya2017/plug-ins/camd/scripts
	C:/solidangle/mtoadeploy/2017/scripts
	C:/Program Files/Autodesk/Maya2017/plug-ins/camd/scripts
	C:/Program Files/Autodesk/Maya2017/plug-ins/camd/scripts
	C:/Program Files/Autodesk/Maya2017/plug-ins/substance/scripts
	C:/Program Files/Autodesk/Maya2017/plug-ins/xgen/scripts/cafm
	C:/Program Files/Autodesk/Maya2017/plug-ins/xgen/scripts/xgenm
	C:/Program Files/Autodesk/Maya2017/plug-ins/xgen/scripts/xgenm/ui
	C:/Program Files/Autodesk/Maya2017/plug-ins/xgen/scripts/xgenm/xmaya
	C:/Program Files/Autodesk/Maya2017/plug-ins/xgen/scripts/xgenm/ui/ae
	C:/Program Files/Autodesk/Maya2017/plug-ins/xgen/scripts/xgenm/ui/brushes
	C:/Program Files/Autodesk/Maya2017/plug-ins/xgen/scripts/xgenm/ui/dialogs
	C:/Program Files/Autodesk/Maya2017/plug-ins/xgen/scripts/xgenm/ui/fxmodules
	C:/Program Files/Autodesk/Maya2017/plug-ins/xgen/scripts/xgenm/ui/tabs
	C:/Program Files/Autodesk/Maya2017/plug-ins/xgen/scripts/xgenm/ui/util
	C:/Program Files/Autodesk/Maya2017/plug-ins/xgen/scripts/xgenm/ui/widgets
	C:/Program Files/Autodesk/Maya2017/plug-ins/xgen/scripts

[MAYA_PROJECT] : 
	N/A

[MAYA_UI_LANGUAGE] : 
	N/A

[MAYA_CMD_FILE_OUTPUT] : 
	N/A

両者で結構違うものですね。

クイック実行用コード

シェルフなどに登録してどうぞ

import platform
import os

def print_envs():

    def isWindows():
        return platform.system() == 'Windows'

    def print_env(key):
        env = os.getenv(key)
        if env is None:
            print ('[{}] : \n\tN/A'.format(key))
            return
        sep = ':'
        if isWindows():
            sep = ';'
        values = env.split(sep)
        print('[{}] : '.format(key))
        for v in values:
            print('\t{}'.format(v))

    keys = [
        'MAYA_LOCATION',
        'MAYA_APP_DIR',
        'MAYA_SHELF_PATH',
        'MAYA_PRESET_PATH',
        'XBMLANGPATH',
        'MAYA_SCRIPT_PATH',
        'MAYA_MODULE_PATH',
        'MAYA_PLUG_IN_PATH',
        'PYTHONPATH',
        'MAYA_PROJECT',
        'MAYA_UI_LANGUAGE',
        'MAYA_CMD_FILE_OUTPUT'
    ]

    print('')
    for k in keys:
        print_env(k)
        print('')

print_envs()
del print_envs