from tkinter import *
from tkinter import messagebox

# Create a window
top = Tk()
top.geometry("300x150")

# Event handlers

# Widgets
lbl_num1 = Label(top, text="Num 1")
lbl_num1.place(x=5, y=5)

lbl_num2 = Label(top, text="Num 2")
lbl_num2.place(x=5, y=30)

lbl_operation = Label(top, text="Operation")
lbl_operation.place(x=5, y=55)

txt_num1 = Entry(top)
txt_num1.place(x=90, y=5)

txt_num2 = Entry(top)
txt_num2.place(x=90, y=30)


# Show the window
top.mainloop()