sumator

import tkinter as tk
class Application(tk.Frame):
    def _init_(self, master=None):
        super()._init_(master)

        self.pack()
# create the application
app = Application()
app.master.title("Sumator")
app.master.minsize(width=100, height=50)

# start the program
app.mainloop()
def _init_(self, master=None):
    super()._init_(master)
    self.pack()
    self.create_widgets()
def create_widgets(self):
    # create widgets
    self.firstNumberEntry = tk.Entry()
    self.plusSign = tk.Label(text="+")
    self.secondNumberEntry = tk.Entry()
    self.equalSign = tk.Label(text="=")
    self.resultLabel = tk.Label(text="Result...", bg="green", fg="white")
    self.calculateButton = tk.Button(text="Calculate")
    # place widgets
    self.firstNumberEntry.pack(side="left")
    self.plusSign.pack(side="left")
    self.secondNumberEntry.pack(side="left")
    self.equalSign.pack(side="left")
    self.resultLabel.pack(side="left")
    self.calculateButton.pack(side="left")