[PyQt] QIcon not displaying

[metulburr]

Im running through PyQt5 tuts and came across a couple of tutorials that use QIcon. I cant get anything given to QIcon to work at all whether its through QAction or setting the window icon via...

self.setWindowIcon(QtGui.QIcon('py.png'))   

I tried the following based on google search results:

• full path
  
• changing image formats
  
• changing image sizes
  
• image in same directory as script
  

full code:

import sys
from PyQt5.QtWidgets import QMainWindow, QAction, qApp, QApplication
from PyQt5.QtGui import QIcon
from PyQt5.QtCore import QFile


class Example(QMainWindow):
    
    def __init__(self):
        super().__init__()
        
        self.initUI()
        
        
    def initUI(self):               
        print(QFile.exists('py.png'))
        exitAction = QAction(QIcon('/home/metulburr/py.png'), '&Exit', self)        
        exitAction.setShortcut('Ctrl+Q')
        exitAction.setStatusTip('Exit application')
        exitAction.triggered.connect(qApp.quit)

        self.statusBar()

        menubar = self.menuBar()
        fileMenu = menubar.addMenu('&File')
        fileMenu.addAction(exitAction)
        
        self.setGeometry(300, 300, 300, 200)
        self.setWindowTitle('Menubar')    
        self.show()
        
        
if __name__ == '__main__':
    
    app = QApplication(sys.argv)
    ex = Example()
    sys.exit(app.exec_())  

Anything given to QIcon is as if the line didnt exist at all. 

Ubuntu 16.04 
My system was acting wacky so i did a complete fresh install again. Maybe i am missing a dependency or something?