下列pyqt5的代码：class Faceshow(QMainWindow, Ui_MainWindow): def __init__(self, parent=None): super(Faceshow, self).__init__(parent) self.setupUi(self) self.main_button.clicked.connect(start) self.main_exit.clicked.connect(self.quit) def quit(self): self.close() class RESUshow(QWidget, Ui_Form): def __int__(self, parent=None): super(RESUshow, self).__init__(parent) self.setupUi(self) img1, img2, text1, text2 = start() pixmap1 = QPixmap.fromImage(img1) pixmap2 = QPixmap.fromImage(img2) self.label_img1.setPixmap(pixmap1) self.label_img2.setPixmap(pixmap2) self.label_psnr.setText(text1) self.label_ssim.setText(text2) 如何在Faceshow主界面槽函数调用start函数后将返回值传入RESUshow窗口的label中RESUshow，并把RESUshow窗口显示出来，主程序怎么实现

在Faceshow主界面槽函数调用start函数后将返回值传入RESUshow窗口的label中，可以先实例化RESUshow类，然后将返回值作为参数传入，最后调用show()方法显示RESUshow窗口。

主程序可以在创建QApplication实例后，先创建Faceshow实例并显示，然后在Faceshow槽函数中创建RESUshow实例并显示。

以下是修改后的代码示例：

import sys
from PyQt5.QtWidgets import QApplication, QMainWindow, QWidget
from PyQt5.QtGui import QPixmap
from ui_mainwindow import Ui_MainWindow
from ui_form import Ui_Form
from start import start

class Faceshow(QMainWindow, Ui_MainWindow):
    def __init__(self, parent=None):
        super(Faceshow, self).__init__(parent)
        self.setupUi(self)
        self.main_button.clicked.connect(self.show_resu)
        self.main_exit.clicked.connect(self.quit)
    
    def show_resu(self):
        img1, img2, text1, text2 = start()
        resu_show = RESUshow(img1, img2, text1, text2)
        resu_show.show()
        
    def quit(self):
        self.close()

class RESUshow(QWidget, Ui_Form):
    def __init__(self, img1, img2, text1, text2, parent=None):
        super(RESUshow, self).__init__(parent)
        self.setupUi(self)
        pixmap1 = QPixmap.fromImage(img1)
        pixmap2 = QPixmap.fromImage(img2)
        self.label_img1.setPixmap(pixmap1)
        self.label_img2.setPixmap(pixmap2)
        self.label_psnr.setText(text1)
        self.label_ssim.setText(text2)

if __name__ == '__main__':
    app = QApplication(sys.argv)
    faceshow = Faceshow()
    faceshow.show()
    sys.exit(app.exec_())