问PyQt5编码

EN

from PyQt5 import QtGui
from PyQt5 import QtWidgets
from PyQt5 import QtCore
from PyQt5.QtWidgets import QApplication, QMainWindow
from PyQt5.QtCore import QRect
import sys

class Mywindow(QMainWindow):
   def __init__(self):
      super(Mywindow, self).__init__()
      self.out = ""
      self.con = {'L': '1', 'O': '2', 'V': '3', 'E': '4'}
      self.setFixedSize(400, 400)
      self.btn1 = QtWidgets.QPushButton(self)
      self.lab1 = QtWidgets.QLabel(self)
      self.lab2 = QtWidgets.QLabel(self)
      self.line1 = QtWidgets.QLineEdit(self)
      self.initUI()

   def initUI(self):
      self.btn1.setText("Enter")
      self.btn1.move(200, 150)
      self.btn1.clicked.connect(self.action)
      self.lab1.setText("input :")
      self.lab1.setStyleSheet('font-size:20px ;color:blue')
      self.lab1.move(100, 150)
      self.line1.text()
      self.line1.move(80, 200)

   def action(self):
      #clear output
      self.out = ''

      for i in self.line1.text():
         self.out += self.con[i.upper()]
         self.lab2.setText(self.out)
         self.lab2.setStyleSheet('font-size:30px ; color :red')
         self.lab2.move(200, 250)

if __name__ == '__main__':
   app = QApplication(sys.argv)
   win = Mywindow()
   win.show()
   sys.exit(app.exec_())