updated concurrency examples

concurrency/flags/count_colors.py

@@ -0,0 +1,22 @@
+import tkinter
+
+class Test:
+    def __init__(self, master):
+
+        canvas = tkinter.Canvas(master)
+
+        canvas.image = tkinter.PhotoImage(file = 'img/br.gif')
+        print(vars(canvas.image))
+
+        canvas.create_image(0,0, image=canvas.image, anchor=tkinter.NW)
+        canvas.bind('<Button-2>', self.right_click)
+
+        canvas.grid(row=0, column=0)
+
+    def right_click(self, event):
+        print(vars(event))
+        raise SystemExit()
+
+root = tkinter.Tk()
+test = Test(root)
+root.mainloop()