python Tkinter基礎 Button command在窗體中添加一個按鈕，單擊按鈕 在IDLE中打印一行字

code 

# Tkinter基礎 Button command在窗體中添加一個按鈕，單擊按鈕 在IDLE中打印一行字

import tkinter as tk

class App():
    def __init__(self, master):
        frame = tk.Frame(master)
        frame.pack()

        self.testButton = tk.Button(frame, text = "hello", fg = "blue", command = self.testPrint)
        self.testButton.pack()

    def testPrint(self):
        print("測試消息！！！！")


root = tk.Tk()
app = App(root)
root.mainloop()

結果：