python + pyqt5 自制exe 随机换壁纸

问题描述：
选择自己图片目录，随机更换壁纸

效果演示

问题解决：

直接上代码：

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

# Form implementation generated from reading ui file 'd:\python code\05changePaperWindow.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 os
import platform
import random
from PyQt5 import QtCore, QtGui, QtWidgets
from PyQt5.QtWidgets import QMessageBox
import win32api, win32gui, win32con

class Ui_changePaperWindow(object):
    def setupUi(self, changePaperWindow):
        changePaperWindow.setObjectName("changePaperWindow")
        changePaperWindow.resize(400, 300)
        changePaperWindow.setIconSize(QtCore.QSize(24, 24))
        self.centralwidget = QtWidgets.QWidget(changePaperWindow)
        self.centralwidget.setObjectName("centralwidget")
        self.showFoldText = QtWidgets.QLineEdit(self.centralwidget)
        self.showFoldText.setGeometry(QtCore.QRect(140, 50, 200, 50))
        self.showFoldText.setObjectName("showFoldText")
        self.selectFoldBtn = QtWidgets.QPushButton(self.centralwidget)
        self.selectFoldBtn.setGeometry(QtCore.QRect