Python Tkinter Calculate 2 Numbers - Addition Subtraction Multiplication Division

How To Calculate 2 Numbers Using Python And Tkinter

In This Python Tkinter Tutorial we will See How To Calculate 2 Numbers ( Sum, Mutiplication, Division, Substraction ) Using Input Text, Button And Select Option (combobox) In Python Using Tkinter and VsCode Editor.

Source Code:

import tkinter as tk
from tkinter import *
from tkinter import ttk


root = Tk()

root.title("Python Tkinter Calculate 2 Numbers")

frame = tk.Frame(root, bg='#45aaf2')

entry_n1 = tk.Entry(frame, font=('verdana',16), width=10)
entry_n2 = tk.Entry(frame, font=('verdana',16), width=10)

options = ['+','-','x','/']
selected = StringVar(frame)
selected.set(options[0])

combobox = ttk.Combobox(frame, textvariable=selected, values=options,
                        font=('verdana',16), width=2)

btn = tk.Button(frame, text='=',bg='grey', fg='#ffffff', font=('verdana',12), width=2)

entry_result = tk.Entry(frame, font=('verdana',16), width=10)


def calculate():
    num1 = int(entry_n1.get())
    num2 = int(entry_n2.get())
    opr  = combobox.get()
    if opr == '+':
            result = num1 + num2
    elif opr == '-':
            result = num1 - num2
    elif opr == 'x':
            result = num1 * num2
    elif opr == '/':
            result = num1 / num2
    
    entry_result.delete(0,END)
    entry_result.insert(0,result)


btn['command'] = calculate


frame.pack()

entry_n1.grid(row=0, column=0, columnspan="3", padx=5, pady=5, sticky="w")
entry_n2.grid(row=1, column=0, columnspan="3", padx=5, pady=5, sticky="w")
combobox.grid(row=2, column=0, padx=5)
btn.grid(row=2, column=1, padx=5, pady=5)
entry_result.grid(row=2, column=2, padx=5)

root.mainloop()