& 버튼을 누르면 Good Morning메세지가 Good Evening으로 바뀌게 하기.

#ui 호출
#pyqt ui파일 불러오기
import sys
from PyQt5.QtWidgets import *
from PyQt5 import uic
form_class = uic.loadUiType("myqt01.ui")[0]
class MyWindow(QMainWindow, form_class):
def __init__(self):
super().__init__()
self.setupUi(self)
self.pushButton.clicked.connect(self.btnClick)
def btnClick(self):
self.label.setText("Good Evening")
if __name__ == "__main__":
app = QApplication(sys.argv)
myWindow = MyWindow()
myWindow.show()
app.exec_()

import sys
from PyQt5.QtWidgets import *
from PyQt5 import uic
form_class = uic.loadUiType("myqt02.ui")[0]
class MyWindow(QMainWindow, form_class):
def __init__(self):
super().__init__()
self.setupUi(self)
#버튼을 클릭했을 때 btnClick이라는 메서드와 연결
self.pushButton.clicked.connect(self.btnClick)
#버튼 눌렀을 때 하나씩 감소하는 메서드
def btnClick(self):
num = int(self.le.text())
num1 = num - 1
self.le.setText(str(num1))
if __name__ == "__main__":
app = QApplication(sys.argv)
myWindow = MyWindow()
myWindow.show()
app.exec_()