過去のテキストを残した上で文字列を追加出力したい。

#やりたいこと
ログ機能っぽく過去のテキストを残した上で文字列を追加出力したい。

#現状
過去のテキストがクリアされてから文字列が追加出力される

#コード

python
1# -*- coding: utf-8 -*-
2"""
3Created on Tue Jun 16 19:37:35 2020
4プログラムmemo
5note : Qt desinerでMainWindowでguiを作成したのでUi_Formと異なる
6note: importした.pyファイル上のオブジェクトを呼び出すときはクラス名を付けること
7@author: asahi
8"""
9import os
10import sys
11
12from PyQt5 import QtWidgets,QtCore
13from PyQt5.QtWidgets import QMainWindow
14from AK003_V1001ui_debug import Ui_MainWindow
15
16
17class AK003(QMainWindow, Ui_MainWindow):
18    def __init__(self,parent=None):
19        super(AK003, self).__init__(parent)
20        self.ui = Ui_MainWindow()
21        self.ui.setupUi(self)
22        #listviewのモデル作成
23        self.list_model = QtCore.QStringListModel()
24        
25    
26
27            
28            
29    def click_execute(self):
30        #code_text解析処理
31        #code textの文字列取得
32        code = self.ui.plainTextEdit_code_text.toPlainText()
33        print(code)
34        self.ui.plainTextEdit_result.setPlainText(code+"\n")
35        
36            
37        pass    
38#メイン関数
39if __name__ == '__main__':
40  app = QtWidgets.QApplication(sys.argv)
41  window = AK003()
42  window.show()
43  sys.exit(app.exec_())
44  
45

importしたuiファイルのコードは以下です

python
1# -*- coding: utf-8 -*-
2
3# Form implementation generated from reading ui file 'AK003_V1001ui_debug.ui'
4#
5# Created by: PyQt5 UI code generator 5.9.2
6#
7# WARNING! All changes made in this file will be lost!
8
9from PyQt5 import QtCore, QtGui, QtWidgets
10
11class Ui_MainWindow(object):
12    def setupUi(self, MainWindow):
13        MainWindow.setObjectName("MainWindow")
14        MainWindow.resize(490, 294)
15        self.centralwidget = QtWidgets.QWidget(MainWindow)
16        self.centralwidget.setObjectName("centralwidget")
17        self.plainTextEdit_code_text = QtWidgets.QPlainTextEdit(self.centralwidget)
18        self.plainTextEdit_code_text.setGeometry(QtCore.QRect(60, 50, 161, 141))
19        self.plainTextEdit_code_text.setObjectName("plainTextEdit_code_text")
20        self.pushButton__execute = QtWidgets.QPushButton(self.centralwidget)
21        self.pushButton__execute.setGeometry(QtCore.QRect(60, 210, 111, 23))
22        font = QtGui.QFont()
23        font.setFamily("Segoe UI")
24        self.pushButton__execute.setFont(font)
25        self.pushButton__execute.setObjectName("pushButton__execute")
26        self.plainTextEdit_result = QtWidgets.QPlainTextEdit(self.centralwidget)
27        self.plainTextEdit_result.setGeometry(QtCore.QRect(250, 50, 161, 141))
28        self.plainTextEdit_result.setObjectName("plainTextEdit_result")
29        self.label_3 = QtWidgets.QLabel(self.centralwidget)
30        self.label_3.setGeometry(QtCore.QRect(300, 30, 71, 16))
31        font = QtGui.QFont()
32        font.setFamily("Segoe UI")
33        self.label_3.setFont(font)
34        self.label_3.setObjectName("label_3")
35        self.label_4 = QtWidgets.QLabel(self.centralwidget)
36        self.label_4.setGeometry(QtCore.QRect(60, 30, 71, 16))
37        font = QtGui.QFont()
38        font.setFamily("Segoe UI")
39        self.label_4.setFont(font)
40        self.label_4.setObjectName("label_4")
41        MainWindow.setCentralWidget(self.centralwidget)
42        self.menubar = QtWidgets.QMenuBar(MainWindow)
43        self.menubar.setGeometry(QtCore.QRect(0, 0, 490, 21))
44        self.menubar.setObjectName("menubar")
45        MainWindow.setMenuBar(self.menubar)
46        self.statusbar = QtWidgets.QStatusBar(MainWindow)
47        self.statusbar.setObjectName("statusbar")
48        MainWindow.setStatusBar(self.statusbar)
49
50        self.retranslateUi(MainWindow)
51        self.pushButton__execute.clicked.connect(MainWindow.click_execute)
52        QtCore.QMetaObject.connectSlotsByName(MainWindow)
53
54    def retranslateUi(self, MainWindow):
55        _translate = QtCore.QCoreApplication.translate
56        MainWindow.setWindowTitle(_translate("MainWindow", "MainWindow"))
57        self.pushButton__execute.setText(_translate("MainWindow", "Execute"))
58        self.label_3.setText(_translate("MainWindow", "Result"))
59        self.label_4.setText(_translate("MainWindow", "input"))
60
61
62
63コード