PyQT：找不到 QDialog

Question

I have an error message in the line class:

    MESRIDialog(QtGui.QDialog, FORM_CLASS): 
AttributeError: module 'PyQt5.QtGui' has no attribute 'QDialog'.

This is my code:

import os

from PyQt5 import QtGui, uic

#from PyQt5 import QtWidgets
from PyQt5.QtWidgets import (QApplication,QWidget,QDialog)

FORM_CLASS, _ = uic.loadUiType(os.path.join(
    os.path.dirname(__file__), 'MESRI_dialog_base.ui'))


class MESRIDialog(QtGui.QDialog, FORM_CLASS):
    def __init__(self, parent=None):
        """Constructor."""
        super(MESRIDialog, self).__init__(parent)
        # Set up the user interface from Designer.
        # After setupUI you can access any designer object by doing
        # self.<objectname>, and you can use autoconnect slots - see
        # http://qt-project.org/doc/qt-4.8/designer-using-a-ui-file.html
        # #widgets-and-dialogs-with-auto-connect
        self.setupUi(self)

Answer 1

I have an error message in the line class:

    MESRIDialog(QtGui.QDialog, FORM_CLASS): 
AttributeError: module 'PyQt5.QtGui' has no attribute 'QDialog'.

This is my code:

import os

from PyQt5 import QtGui, uic

#from PyQt5 import QtWidgets
from PyQt5.QtWidgets import (QApplication,QWidget,QDialog)

FORM_CLASS, _ = uic.loadUiType(os.path.join(
    os.path.dirname(__file__), 'MESRI_dialog_base.ui'))


class MESRIDialog(QtGui.QDialog, FORM_CLASS):
    def __init__(self, parent=None):
        """Constructor."""
        super(MESRIDialog, self).__init__(parent)
        # Set up the user interface from Designer.
        # After setupUI you can access any designer object by doing
        # self.<objectname>, and you can use autoconnect slots - see
        # http://qt-project.org/doc/qt-4.8/designer-using-a-ui-file.html
        # #widgets-and-dialogs-with-auto-connect
        self.setupUi(self)