代码

# -*- coding: utf-8 -*-# Form implementation generated from reading ui file 'nochange.ui'
#
# Created by: PyQt5 UI code generator 5.11.3
#
# WARNING! All changes made in this file will be lost!
'''禁止窗体显示最大化按钮及调整窗体大小
'''
from PyQt5 import QtCore, QtWidgetsclass Ui_MainWindow(object):def setupUi(self, MainWindow):MainWindow.setObjectName("MainWindow")MainWindow.resize(500, 300)self.centralwidget = QtWidgets.QWidget(MainWindow)self.centralwidget.setObjectName("centralwidget")MainWindow.setCentralWidget(self.centralwidget)# 禁止显示最大化按钮及调整窗体大小MainWindow.setFixedSize(MainWindow.width(), MainWindow.height());self.retranslateUi(MainWindow)QtCore.QMetaObject.connectSlotsByName(MainWindow)def retranslateUi(self, MainWindow):_translate = QtCore.QCoreApplication.translateMainWindow.setWindowTitle(_translate("MainWindow", "禁止窗体显示最大化按钮及调整窗体大小"))# 主方法
if __name__ == '__main__':import sysapp = QtWidgets.QApplication(sys.argv)MainWindow = QtWidgets.QMainWindow() # 创建窗体对象ui = Ui_MainWindow() # 创建PyQt5设计的窗体对象ui.setupUi(MainWindow) # 调用PyQt5窗体的方法对窗体对象进行初始化设置MainWindow.show() # 显示窗体sys.exit(app.exec_()) # 程序关闭时退出进程

效果