pyqt5的qmessagebox闪退求助

Question

各位大神帮我看下是什么问题 造成只要输入不是数字 进入else语句的messagebox就闪退
若注视掉messagebox语句，下面的print能够执行

-*- coding: utf-8 -*-

Form implementation generated from reading ui file 'change.ui'

#

Created by: PyQt5 UI code generator 5.7

#

WARNING! All changes made in this file will be lost!

from PyQt5 import QtCore, QtGui, QtWidgets
#from PyQt5.QtWidgets import QMessageBox
import re

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.lineEdit = QtWidgets.QLineEdit(self.centralwidget)
self.lineEdit.setGeometry(QtCore.QRect(320, 140, 113, 20))
self.lineEdit.setMinimumSize(QtCore.QSize(113, 20))
self.lineEdit.setObjectName("lineEdit")
self.lineEdit_2 = QtWidgets.QLineEdit(self.centralwidget)
self.lineEdit_2.setGeometry(QtCore.QRect(320, 210, 113, 20))
self.lineEdit_2.setMinimumSize(QtCore.QSize(113, 20))
self.lineEdit_2.setObjectName("lineEdit_2")
MainWindow.setCentralWidget(self.centralwidget)
self.menubar = QtWidgets.QMenuBar(MainWindow)
self.menubar.setGeometry(QtCore.QRect(0, 0, 800, 23))
self.menubar.setObjectName("menubar")
MainWindow.setMenuBar(self.menubar)
self.statusbar = QtWidgets.QStatusBar(MainWindow)
self.statusbar.setObjectName("statusbar")
MainWindow.setStatusBar(self.statusbar)

    self.retranslateUi(MainWindow)
    self.lineEdit.editingFinished.connect(self.update)
    #self.lineEdit_2.connect(self.lineEdit, SIGNAL("editingFinished"), self.update)


    QtCore.QMetaObject.connectSlotsByName(MainWindow)

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

def update(self):
    try:
        text=self.lineEdit.text()
        value=re.compile(r'[0-9]+\.+[0-9]+$')
        result=value.match(text)
        if result:

            intnum=text.rsplit(".")
            #print (intnum)
            othernum="0"+"."+intnum[1]
            #print (othernum)
            minnum=int(float(othernum)*60)
            #print (minnum)
            secnum=int(float(othernum)*3600-minnum*60)
            #print(secnum)
            self.lineEdit_2.setText(intnum[0]+"°"+str(minnum)+"′"+str(secnum)+"″")
        else:
            QtGui.QMessageBox.warning(self,"Warning","输入数据错误，请重新输入！",
                                      QMessageBox.OK,QMessageBox.OK)


            print("输入错误")
    except:
        print(sys.exc_info)

Answer 1

http://www.cnblogs.com/jmlovepython/p/5723383.html