python中使用pyqt5出现 No module named 'QtWidgets'报错应该如何解决？

Question

题目描述

在使用pyqt5创建窗口时我发现会一直报错 No module named 'QtWidgets'这个错误，网上搜了一下发现是pyqt5的版本问题，需要5.10的版本才支持这个模块，但我的清华源最早只有5.12.3的版本，我想问一下这个问题应该如何解决？以下是我的代码片段和相关的版本信息

题目来源及自己的思路

相关代码

# -*- coding: utf-8 -*-

# Form implementation generated from reading ui file 'untitled.ui'
#
# Created by: PyQt5 UI code generator 5.15.4
#
# WARNING: Any manual changes made to this file will be lost when pyuic5 is
# run again.  Do not edit this file unless you know what you are doing.
import sys

import QtWidgets as QtWidgets


# 程序入口，程序从此处启动PyQt设计的主窗口
def Ui_MainWindow():
    pass


if __name__ == '__main__':
    app = QtWidgets.QApplication(sys.argv)
    MainWindow = QtWidgets.QMainWindow()  # 创建窗口
    ui = Ui_MainWindow()  # 创建PyQt设计窗口
    ui.setupUi(MainWindow)  # 初始化设置
    MainWindow.show()  # 显示窗口
    sys.exit(app.exec_())  # 程序关闭时退出进程

from PyQt5 import QtCore, QtWidgets


class Ui_MainWindow(object):
    def setupUi(self, MainWindow):
        MainWindow.setObjectName("MainWindow")
        MainWindow.resize(800, 600)
        self.centralwidget = QtWidgets.QWidget(MainWindow)
        self.centralwidget.setObjectName("centralwidget")
        self.pushButton = QtWidgets.QPushButton(self.centralwidget)
        self.pushButton.setGeometry(QtCore.QRect(230, 230, 75, 23))
        self.pushButton.setObjectName("pushButton")
        MainWindow.setCentralWidget(self.centralwidget)
        self.menubar = QtWidgets.QMenuBar(MainWindow)
        self.menubar.setGeometry(QtCore.QRect(0, 0, 800, 22))
        self.menubar.setObjectName("menubar")
        MainWindow.setMenuBar(self.menubar)
        self.statusbar = QtWidgets.QStatusBar(MainWindow)
        self.statusbar.setObjectName("statusbar")
        MainWindow.setStatusBar(self.statusbar)

        self.retranslateUi(MainWindow)
        QtCore.QMetaObject.connectSlotsByName(MainWindow)

    def retranslateUi(self, MainWindow):
        _translate = QtCore.QCoreApplication.translate
        MainWindow.setWindowTitle(_translate("MainWindow", "MainWindow"))
        self.pushButton.setText(_translate("MainWindow", "PushButton"))

你期待的结果是什么？实际看到的错误信息又是什么？

Answer 1

是这样的吧，版本 5.15.7_1

import PyQt5.QtWidgets as QtWidgets