pushbutton update

src/kr/co/swh/lecture/python/pyqt5/event-slot.py

-import sys
-from PyQt5.QtWidgets import *
-
-app = QApplication(sys.argv)
-button = QPushButton('Hello World!')
-button.show()
-app.exec_()

src/kr/co/swh/lecture/python/pyqt5/pushbutton.py

-import sys
-from PyQt5.QtWidgets import *
-
-class MyWindow(QMainWindow):
-    def __init__(self):
-        super().__init__()
-        self.initUI()
-        
-    def initUI(self):
-        self.setWindowTitle("SWH")
-
-        button = QPushButton("눌러봐", self)
-        button.move(50, 30)
-        button.clicked.connect(self.click)
-
-    def click(self):
-        QMessageBox.about(self, "메세지 박스", "눌렀어요.")
-
-if __name__ == "__main__":
-    app = QApplication(sys.argv)
-    mywindow = MyWindow()
-    mywindow.show()
-    app.exec_()
+import sys
+from PyQt5.QtWidgets import *
+
+app = QApplication(sys.argv)
+button = QPushButton('Hello World!')
+button.show()
+app.exec_()

src/kr/co/swh/lecture/python/pyqt5/pushbutton2.py

 import sys
 from PyQt5.QtWidgets import *
-from PyQt5.QtCore import *
 
 class MyWindow(QMainWindow):
     def __init__(self):
 
         button = QPushButton("눌러봐", self)
         button.move(50, 30)
-        button.clicked.connect(QCoreApplication.instance().quit)
+        button.clicked.connect(self.click)
+
+    def click(self):
+        QMessageBox.about(self, "메세지 박스", "눌렀어요.")
 
 if __name__ == "__main__":
     app = QApplication(sys.argv)
-    mywindow = MyWindow()
-    mywindow.show()
+    window = MyWindow()
+    window.show()
     app.exec_()

src/kr/co/swh/lecture/python/pyqt5/pushbutton3.py

+import sys
+from PyQt5.QtWidgets import *
+from PyQt5.QtCore import *
+
+class MyWindow(QMainWindow):
+    def __init__(self):
+        super().__init__()
+        self.initUI()
+        
+    def initUI(self):
+        self.setWindowTitle("SWH")
+
+        button = QPushButton("눌러봐", self)
+        button.move(50, 30)
+        button.clicked.connect(QCoreApplication.instance().quit)
+
+if __name__ == "__main__":
+    app = QApplication(sys.argv)
+    window = MyWindow()
+    window.show()
+    app.exec_()