Explain this code

from PyQt5.QtWidgets import QApplication, QMessageBox
from PyQt5.QtGui import QIcon, QMouseEvent
from PyQt5.QtCore import Qt

def show_help():
    help_box = QMessageBox(QMessageBox.Information, "Help", "Welcome to help. Press OK to continue.", QMessageBox.Ok)
    help_box.exec_()
    if help_box.result() == QMessageBox.Ok:
        thanks_box = QMessageBox(QMessageBox.Information, "Help", "Thanks for using help. Press OK to close.", QMessageBox.Ok)
        thanks_box.exec_()

def main():
    app = QApplication([])
    show_help()
    app.exec_()

if __name__ == "__main__":
    main() Write your response using less than 200 words.
user