Python - Creating Graphical User Interfaces(tkinter module, immutable data, IntVar)

Practical Programming
An Introduction to Computer Science
Using Python 3
(Pragmatic Programmers)
(Pragmatic Bookshelf)
Paul Gries (著) Jennifer Campbell (著)
Jason Montojo (著) Lynn Beighley (編集)

開発環境

• OS X Yosemite - Apple (OS)
• Emacs (CUI)、BBEdit - Bare Bones Software, Inc. (GUI) (Text Editor)
• Python 3.4 (プログラミング言語)

Practical Programming: An Introduction to Computer Science Using Python 3 (Pragmatic Programmers) (Paul Gries (著)、Jennifer Campbell (著)、Jason Montojo (著)、Lynn Beighley (編集)、Pragmatic Bookshelf)のChapter 16(Creating Graphical User Interfaces)、16.7(Exercises) 2.を解いてみる。

16.7(Exercises) 2.

コード(BBEdit)

sample2.py

#!/usr/bin/env python3
# -*- coding: utf-8 -*-

import tkinter

window = tkinter.Tk()

data = tkinter.IntVar()
data.set(0)
button = tkinter.Button(window, textvariable=data,
                        command=lambda:data.set(data.get() + 1))
button.pack()

window.mainloop()

入出力結果(Terminal, IPython)

$ ./sample2.py
$