old_contents: from Qt import QtWidgets
  import time
  
  
  def get_maya_window(cache=[]):
      '''Get Maya MainWindow as a QWidget.'''
  
      if cache:
          return cache[0]
  
      for widget in QtWidgets.qApp.topLevelWidgets():
          if widget.objectName() == 'MayaWindow':
              cache.append(widget)
              return widget
  
      raise RuntimeError('Could not locate MayaWindow...')
  
  
  def wait(delay=1):
      '''Delay python execution for a specified amount of time'''
  
      app = QtWidgets.QApplication.instance()
  
      s = time.clock()
      while True:
          if time.clock() - s >= delay:
              return
  
          app.processEvents()
  
new_contents: from Qt import QtWidgets
  import time
  
  
  def get_maya_window(cache=[]):
      '''Get Maya MainWindow as a QWidget.'''
  
      if cache:
          return cache[0]
  
      for widget in QtWidgets.QApplication.instance().topLevelWidgets():
          if widget.objectName() == 'MayaWindow':
              cache.append(widget)
              return widget
  
      raise RuntimeError('Could not locate MayaWindow...')
  
  
  def wait(delay=1):
      '''Delay python execution for a specified amount of time'''
  
      app = QtWidgets.QApplication.instance()
  
      s = time.clock()
      while True:
          if time.clock() - s >= delay:
              return
  
          app.processEvents()
  
subject: update get_maya_window