QWizard using PyQt5

import os
import sys
from PyQt5.QtWidgets import QWizard, QWizardPage, QApplication
from PyQt5.uic import loadUi
from enum import Enum


class MyWizard(QWizard):

    def __init__(self):
        super().__init__()
        self.setPage(Pages.page_one.value, PageOne(self))


class PageOne(QWizardPage):

    def __init__(self, parent):
        super().__init__(parent)

        self.ui = loadUi(os.path.join(__file__, '..', 'PageOne.ui'), self)

class Pages(Enum):
    page_one = 1


if __name__ == '__main__':
    app = QApplication(sys.argv)

    wizard = MyWizard()
    wizard.show()

    app.exec_()