Sum of two numbers using Tkinter in python

Sum of two numbers using Tkinter in python. This program will print the addition or sum of the two numbers in the python tkinter program for python gui developers and beginners

from tkinter import * 
def addNumbers():
res=int(e1.get())+int(e2.get())
myText.set(res)
master = Tk()
myText=StringVar()
Label(master, text="First").grid(row=0, sticky=W)
Label(master, text="Second").grid(row=1, sticky=W)
Label(master, text="Result:").grid(row=3, sticky=W)
result=Label(master, text="", textvariable=myText).grid(row=3,column=1, sticky=W)
e1 = Entry(master)
e2 = Entry(master)
e1.grid(row=0, column=1)
e2.grid(row=1, column=1)
b = Button(master, text="Calculate", command=addNumbers)
b.grid(row=0, column=2,columnspan=2, rowspan=2,sticky=W+E+N+S, padx=5, pady=5)
mainloop()