GuiShell/ui/About.py

from PySide2.QtWidgets import *
from PySide2.QtCore import *
from PySide2.QtGui import *
from ui.ui_About import Ui_AboutDialog

class AboutWindow(Ui_AboutDialog, QDialog):
    def __init__(self, mainWindow, txt) -> None:
        super().__init__()
        self.setupUi(self)
        index = 1
        for line in txt.split("\n"):
            label = QLabel(self)
            label.setText(line)
            label.setAlignment(Qt.AlignmentFlag.AlignHCenter)
            self.verticalLayout.insertWidget(index, label)
            index += 1
        self.move(mainWindow.x()+(mainWindow.width()-self.width())/2,mainWindow.y()+(mainWindow.height()-self.height())/2)
        self.show()
        self.setHidden(False)