September Morn Update

Task/Simple-windowed-application/Python/simple-windowed-application-1.py

@@ -1,13 +1,29 @@
-from Tkinter import Tk, Label, Button
+from functools import partial
 
-def update_label():
-    global n
-    n += 1
-    l["text"] = "Number of clicks: %d" % n
+import tkinter as tk
 
-w = Tk()
-n = 0
-l = Label(w, text="There have been no clicks yet")
-l.pack()
-Button(w, text="click me", command=update_label).pack()
-w.mainloop()
+
+def on_click(label: tk.Label,
+             counter: tk.IntVar) -> None:
+    counter.set(counter.get() + 1)
+    label["text"] = f"Number of clicks: {counter.get()}"
+
+
+def main():
+    window = tk.Tk()
+    label = tk.Label(master=window,
+                     text="There have been no clicks yet")
+    label.pack()
+    counter = tk.IntVar()
+    update_counter = partial(on_click,
+                             label=label,
+                             counter=counter)
+    button = tk.Button(master=window,
+                       text="click me",
+                       command=update_counter)
+    button.pack()
+    window.mainloop()
+
+
+if __name__ == '__main__':
+    main()

Task/Simple-windowed-application/Python/simple-windowed-application-2.py

@@ -1,22 +1,22 @@
-#!/usr/bin/env python
-from Tkinter import Button, Frame, Label, Pack
+import tkinter as tk
 
-class ClickCounter(Frame):
-    def click(self):
-        self.count += 1
-        self.label['text'] = 'Number of clicks: %d' % self.count
-
-    def createWidgets(self):
-        self.label = Label(self, text='here have been no clicks yet')
-        self.label.pack()
-        self.button = Button(self, text='click me', command=self.click)
-        self.button.pack()
 
+class ClickCounter(tk.Frame):
     def __init__(self, master=None):
-        Frame.__init__(self, master)
-        Pack.config(self)
-        self.createWidgets()
+        super().__init__(master)
+        tk.Pack.config(self)
+        self.label = tk.Label(self, text='There have been no clicks yet')
+        self.label.pack()
+        self.button = tk.Button(self,
+                                text='click me',
+                                command=self.click)
+        self.button.pack()
         self.count = 0
 
-if __name__=="__main__":
+    def click(self):
+        self.count += 1
+        self.label['text'] = f'Number of clicks: {self.count}'
+
+
+if __name__ == "__main__":
     ClickCounter().mainloop()

Task/Simple-windowed-application/Python/simple-windowed-application-3.py

@@ -1,20 +1,36 @@
-import sys
-from qt import *
+from functools import partial
+from itertools import count
 
-def update_label():
-    global i
-    i += 1
-    lbl.setText("Number of clicks: %i" % i)
+from PyQt5.QtWidgets import (QApplication,
+                             QLabel,
+                             QPushButton,
+                             QWidget)
+from PyQt5.QtCore import QRect
 
-i = 0
-app = QApplication(sys.argv)
-win = QWidget()
-win.resize(200, 100)
-lbl = QLabel("There have been no clicks yet", win)
-lbl.setGeometry(0, 15, 200, 25)
-btn = QPushButton("click me", win)
-btn.setGeometry(50, 50, 100, 25)
-btn.connect(btn, SIGNAL("clicked()"), update_label)
-win.show()
-app.connect(app, SIGNAL("lastWindowClosed()"), app, SLOT("quit()"))
-app.exec_loop()
+LABEL_GEOMETRY = QRect(0, 15, 200, 25)
+BUTTON_GEOMETRY = QRect(50, 50, 100, 25)
+
+
+def on_click(_, label, counter=count(1)):
+    label.setText(f"Number of clicks: {next(counter)}")
+
+
+def main():
+    application = QApplication([])
+    window = QWidget()
+    label = QLabel(text="There have been no clicks yet",
+                   parent=window)
+    label.setGeometry(LABEL_GEOMETRY)
+    button = QPushButton(text="click me",
+                         parent=window)
+    button.setGeometry(BUTTON_GEOMETRY)
+    update_counter = partial(on_click,
+                             label=label)
+    button.clicked.connect(update_counter)
+    window.show()
+    application.lastWindowClosed.connect(window.close)
+    application.exec_()
+
+
+if __name__ == '__main__':
+    main()

Task/Simple-windowed-application/Python/simple-windowed-application-4.py

@@ -1,28 +1,35 @@
 import wx
 
-class MyApp(wx.App):
-  def click(self, event):
-    self.count += 1
-    self.label.SetLabel("Count: %d" % self.count)
 
-  def OnInit(self):
-    frame = wx.Frame(None, wx.ID_ANY, "Hello from wxPython")
-    self.count = 0
-    self.button = wx.Button(frame, wx.ID_ANY, "Click me!")
-    self.label = wx.StaticText(frame, wx.ID_ANY, "Count: 0")
-    self.Bind(wx.EVT_BUTTON, self.click, self.button)
+class ClickCounter(wx.Frame):
+    def __init__(self):
+        super().__init__(parent=None)
+        self.count = 0
+        self.button = wx.Button(parent=self,
+                                label="Click me!")
+        self.label = wx.StaticText(parent=self,
+                                   label="There have been no clicks yet")
+        self.Bind(event=wx.EVT_BUTTON,
+                  handler=self.click,
+                  source=self.button)
 
-    self.sizer = wx.BoxSizer(wx.VERTICAL)
-    self.sizer.Add(self.button, True, wx.EXPAND)
-    self.sizer.Add(self.label, True, wx.EXPAND)
-    frame.SetSizer(self.sizer)
-    frame.SetAutoLayout(True)
-    self.sizer.Fit(frame)
+        self.sizer = wx.BoxSizer(wx.VERTICAL)
+        self.sizer.Add(window=self.button,
+                       proportion=1,
+                       flag=wx.EXPAND)
+        self.sizer.Add(window=self.label,
+                       proportion=1,
+                       flag=wx.EXPAND)
+        self.SetSizer(self.sizer)
+        self.sizer.Fit(self)
 
-    frame.Show(True)
+    def click(self, _):
+        self.count += 1
+        self.label.SetLabel(f"Count: {self.count}")
 
-    self.SetTopWindow(frame)
-    return True
 
-app = MyApp(0)
-app.MainLoop()
+if __name__ == '__main__':
+    app = wx.App()
+    frame = ClickCounter()
+    frame.Show()
+    app.MainLoop()