# Error: ImportError: file <maya console> line 1: No module named PySide #

[amaterasu-qbb]

1. Are you able to execute this code successfully?

from PySide import QtGui
 
class SingletonType(type):
    _instance = None
          
    def __call__(cls, *args, **kwargs):
        if cls._instance is None:
            cls._instance = super(SingletonType, cls).__call__(*args, **kwargs)
          
        return cls._instance
         
class MainWindow(QtGui.QMainWindow):
    __metaclass__ = SingletonType
     
    def __init__(self, *args, **kwargs):
        super(MainWindow, self).__init__(*args, **kwargs)
        self.setWindowTitle('Singleton Window')
        self.resize(640, 405)

when I run this code the error will show up like this.

# Error: ImportError: file <maya console> line 1: No module named PySide

My pycharm is already getting maya's PySide2, QtGui, QtCore and QtWidgets.

Pyside2QtCoreQtGuiQtWidgets

[stuzzz]

Hi,

You may try to import PySide2 instead

[amaterasu-qbb]

Hi! @stuzzz Thanks for the reply.

I tried to import PySide2 like this.

import PySide2
print('PySide2')

It shows PySide2 so I think I was able to import it. but when I tried that command in 1 comes error.

# Error: NameError: file <maya console> line 12: name 'QtGui' is not defined # 

 so I tried. but come error again.

import PySide2 
import QtGui


# Error: ImportError: file <maya console> line 2: No module named QtGui # 

Have you tried the above command? Did it work?

[stuzzz]

Hi,

I rather meant something like this:

from PySide2 import QtGui

[amaterasu-qbb]

thank you. I did but its show the error

# Error: AttributeError: file <maya console> line 12: 'module' object has no attribute 'QMainWindow'

I tried two patterns.

import PySide2 
from PySide2 import QtGui
class SingletonType(type):
    _instance = None
          
    def __call__(cls, *args, **kwargs):
        if cls._instance is None:
            cls._instance = super(SingletonType, cls).__call__(*args, **kwargs)
          
        return cls._instance
         
class MainWindow(QtGui.QMainWindow):
    __metaclass__ = SingletonType
     
    def __init__(self, *args, **kwargs):
        super(MainWindow, self).__init__(*args, **kwargs)
        self.setWindowTitle('Singleton Window')
        self.resize(640, 405)

from PySide2 import QtCore, QtGui, QtWidgets
import maya.cmds as cmds

class SingletonType(type):
    _instance = None
          
    def __call__(cls, *args, **kwargs):
        if cls._instance is None:
            cls._instance = super(SingletonType, cls).__call__(*args, **kwargs)
          
        return cls._instance
         
class MainWindow(QtGui.QMainWindow):
    __metaclass__ = SingletonType
     
    def __init__(self, *args, **kwargs):
        super(MainWindow, self).__init__(*args, **kwargs)
        self.setWindowTitle('Singleton Window')
        self.resize(640, 405)

I'm sorry to bother you but could you please try this code?

[stuzzz]

You've made a mistake here:

class MainWindow(QtGui.QMainWindow):

class MainWindow(QtWidgets.QMainWindow):

 Then there is an error concerning your metaclass design. If not sure to know what you try to achieve ...