pyqt5 loadUiType wont work code example

Example: how to load ui file in pyqt5

class Ui(QtWidgets.QMainWindow):
    def __init__(self):
        super(Ui, self).__init__() # Call the inherited classes __init__ method
        uic.loadUi('basic.ui', self) # Load the .ui file
        self.show() # Show the GUI