当lineEdit_input 的值为‘123’的时候，想要得到的结果为 ‘01 02 03’要如何实现？
```python
from PyQt5 import QtCore, QtGui, QtWidgets
import sys
from PyQt5.QtWidgets import *
class Ui_Form(object):
def setupUi(self, Form):
Form.setObjectName("Form")
Form.resize(359, 247)
self.checkBox = QtWidgets.QCheckBox(Form)
self.checkBox.setGeometry(QtCore.QRect(40, 30, 71, 16))
self.checkBox.setObjectName("checkBox")
self.lineEdit = QtWidgets.QLineEdit(Form)
self.lineEdit.setGeometry(QtCore.QRect(90, 30, 113, 20))
self.lineEdit.setText("")
self.lineEdit.setObjectName("lineEdit")
self.lineEdit.setPlaceholderText('输入按键')
self.pushButton = QtWidgets.QPushButton(Form)
self.pushButton.setGeometry(QtCore.QRect(50, 140, 75, 23))
self.pushButton.setObjectName("pushButton")
self.pushButton.clicked.connect(lambda:self.click())
self.retranslateUi(Form)
QtCore.QMetaObject.connectSlotsByName(Form)
def retranslateUi(self, Form):
_translate = QtCore.QCoreApplication.translate
Form.setWindowTitle(_translate("Form", "Form"))
self.checkBox.setText(_translate("Form", "按键"))
self.pushButton.setText(_translate("Form", "确认"))
def click(self):
lineEdit_input = self.lineEdit.text()
# lineEdit_input_1
if lineEdit_input == '1':
lineEdit_input = '01'
# lineEdit_input
if lineEdit_input == '2':
lineEdit_input = '02'
if lineEdit_input == '3':
lineEdit_input = '03'
if lineEdit_input=='4':
lineEdit_input = '04'
if lineEdit_input == '5':
lineEdit_input = '05'
if lineEdit_input == '6':
lineEdit_input = '06'
if lineEdit_input=='7':
lineEdit_input = '07'
if lineEdit_input == '8':
lineEdit_input = '08'
if lineEdit_input == '9':
lineEdit_input = '09'
if lineEdit_input=='*':
lineEdit_input = '10'
if lineEdit_input == '#':
lineEdit_input = '11'
if lineEdit_input == 'L':
lineEdit_input = '41'
a = list(lineEdit_input)
print(a)
print(lineEdit_input)
if __name__ == "__main__":
app = QtWidgets.QApplication(sys.argv)
MainWidow = QMainWindow()
window = Ui_Form()
window.setupUi(MainWidow)
MainWidow.show()
app.exec_()
```