oop with tkinter code example

Example 1: how to install tkinter

sudo apt-get install python3-tk

Example 2: tkinter basic

from tkinter import Tk, Label, Button

class MyFirstGUI:
    def __init__(self, master):
        self.master = master
        master.title("A simple GUI")

        self.label = Label(master, text="This is our first GUI!")
        self.label.pack()

        self.greet_button = Button(master, text="Greet", command=self.greet)
        self.greet_button.pack()

        self.close_button = Button(master, text="Close", command=master.quit)
        self.close_button.pack()

    def greet(self):
        print("Greetings!")

root = Tk()
my_gui = MyFirstGUI(root)
root.mainloop()

Example 3: root = tk.Tk() my_gui = App1(root)

from tkinter import Label, Button
blink = 0

class MyClass(tk.Frame):
    def __init__(self, master):
        self.master = master
        super().__init__(self.master)

        global blink  

        self.label = Label(master, text=blink)
        self.button = Button(master, text="Button", command=lambda: foo(self.label))
        self.label.pack()
        self.button.pack()
        #self.blinkCheck()

    def blinkCheck(self):
        global blink
        while True:
            print("blink in blinkCheck method is = {}".format(blink))
            time.sleep(2.5)

    def foo(self, label):
        label.config(text=blink)