마야 QT 메인 윈도우 찾기

from maya import cmds
from maya import OpenMayaUI as omui 
from PySide2.QtCore import * 
from PySide2.QtGui import *
from PySide2 import QtWidgets as wdg
from shiboken2 import wrapInstance 
win = None
def init():
    global win
    ptr = omui.MQtUtil.mainWindow()    
    widget = wrapInstance(long(ptr), wdg.QWidget)
    win = bikes_LightingTool(widget)
    print widget

class bikes_LightingTool(wdg.QWidget):
    def __init__(self, parent=None):
        super(bikes_LightingTool, self).__init__(parent)
        self.parent_widget = parent
        lay = wdg.QHBoxLayout(self)
        lay.addWidget(wdg.QPushButton())
        self.show()
        print self.parent()
        
init()

from maya import OpenMayaUI as omui
omui.MQtUtil.mainWindow()    
ptr = omui.MQtUtil.mainWindow()

print(ptr)

maya, qt, mainWindow, python, 마야, 큐티, 윈도우, 파이썬