python pyqt 5常用固定サイズメインフォーム画面中央

-- coding: utf-8 --
Form implementation generated from reading ui file 'D:\file\python\siflask\main.ui'
Created by: PyQt5 UI code generator 5.11.3
WARNING! All changes made in this file will be lost!
from PyQt5 import QtCore, QtGui, QtWidgets import sys from PyQt5.QtWidgets import QApplication , QMainWindow,QDesktopWidget
class Ui_MainWindow(object): def setupUi(self, MainWindow): MainWindow.setObjectName("MainWindow") MainWindow.resize(546, 518) MainWindow.setMinimumSize(QtCore.QSize(546, 518)) MainWindow.setMaximumSize(QtCore.QSize(546, 518)) self.centralwidget = QtWidgets.QWidget(MainWindow) self.centralwidget.setObjectName("centralwidget") MainWindow.setCentralWidget(self.centralwidget) self.menubar = QtWidgets.QMenuBar(MainWindow) self.menubar.setGeometry(QtCore.QRect(0, 0, 546, 23)) self.menubar.setObjectName("menubar") MainWindow.setMenuBar(self.menubar) self.statusbar = QtWidgets.QStatusBar(MainWindow) self.statusbar.setStatusTip("") 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", "I AM TITLE"))

class MyMainWindow(QMainWindow, Ui_MainWindow): def init(self, parent=None): super(MyMainWindow, self).init(parent) self.setupUi(self) self.statusbar.showMessage("I AM TOOLBAR") self.center()

def center(self):
    screen=QDesktopWidget().screenGeometry()
    size=self.geometry()
    self.move((screen.width()-size.width())/2,(screen.height()-size.height())/2)

if name == "main": app = QApplication(sys.argv) myWin = MyMainWindow() myWin.show() sys.exit(app.exec_())