PyQt5--QFileDiaglog

# -*- coding:utf-8 -*-
'''
Created on Sep 17, 2018

@author: SaShuangYiBing

Comment: 
'''
import sys
from PyQt5.QtGui import QIcon
from PyQt5.QtWidgets import QApplication,QMainWindow,QFileDialog,QTextEdit,QAction

class New_test(QMainWindow):
    def __init__(self):
        super().__init__()
        self.initUI()
        
    def initUI(self):
        self.textEdit = QTextEdit()
        self.setCentralWidget(self.textEdit)
        self.statusBar()
        
        openFile = QAction(QIcon('exit.png'),'Open',self)
        openFile.setShortcut('Crtl+O')
        openFile.setStatusTip('Open new file')
        openFile.triggered.connect(self.showdiaglog)
        
        menubar = self.menuBar()
        fileMenu = menubar.addMenu('&File')
        fileMenu.addAction(openFile)
        
        self.setGeometry(300,300,350,300)
        self.setWindowTitle('File Diaglog')
        self.show()
        
    def showdiaglog(self):
        try:
            fname = QFileDialog.getOpenFileName(self,'Open file','/home')
            
            if fname[0]:
                with open(fname[0],'r',encoding='utf-8') as f:   # 在Python3中使用open时后面需要带上编码方式，否则易引起打开非utf-8编码字符时会报错
                    data = f.read()
                    self.textEdit.setText(data)
        except Exception as e:
            print (e)
                
if __name__ == '__main__':
    app = QApplication(sys.argv)
    ex = New_test()
    sys.exit(app.exec_())