master

tk_count_OOP.py

#!/usr/sbin/env python
from tkinter import *
class Application(Frame):
    def __init__(self, master=None):
        Frame.__init__(self, master)
        self.grid()
        self.create_widgets()
        self.count_value = 0

     def create_widgets(self):
          self.count_label = Label(self, text="Count: 0")
          self.count_label.grid(row=0, column=1)
          self.incr_button = Button(self, text="Increment", command=self.increment_count)
          self.incr_button.grid(row=0, column=0)
          self.quit_button = Button(self, text="Quit", command=self.master.destroy)
          self.quit_button.grid(row=1, column=0)
     def increment_count(self):
          self.count_value += 1
          self.count_label.configure(text='Count: ' + str(self.count_value))

app = Application()
app.mainloop()