I wrote a crawler when I was learning python. That is, to capture the title, introduction, price, and buyer"s comments of some goods.
Today, I want to learn from pyqt5, so I want to add a gui to the reptile directly.

after running, the main form is unresponsive.
thinks it may be a crawler problem, which is too time-consuming.

so add a process to the button method in pyqt5.
when you click the button, open a new process to execute the crawler.
although the crawler works properly, the gui is still unresponsive.

I don"t understand what"s going on.
Thank you

 class MyWindow(QMainWindow, Ui_MainWindow):
    def __init__(self, parent=None):
        super(MyWindow, self).__init__(parent)
        self.setupUi(self)
        self.pushButton_2.clicked.connect(self.aa)

    def aa(self):
        p = Process(target=pa)
        p.start()
        p.join()



if __name__ == "__main__":
    app = QApplication(sys.argv)
    m = MyWindow()
    m.show()
    sys.exit(app.exec_())