Python code for calculator

[helpthehack]

import tkinter as tk

root= tk.Tk()

canvas1 = tk.Canvas(root, width = 300, height = 300)
canvas1.pack()

entry1 = tk.Entry (root)
canvas1.create_window(210, 100, window=entry1)

entry2 = tk.Entry (root)
canvas1.create_window(210, 140, window=entry2)

entry3 = tk.Entry (root)
canvas1.create_window(210, 240, window=entry3)

label0 = tk.Label(root, text='Calculator')
label0.config(font=('helvetica', 14))
canvas1.create_window(150, 40, window=label0)

label1 = tk.Label(root, text='Type Value 1:')
label1.config(font=('helvetica', 10))
canvas1.create_window(100, 100, window=label1)

label2 = tk.Label(root, text='Type Value 2:')
label2.config(font=('helvetica', 10))
canvas1.create_window(100, 140, window=label2)

label3 = tk.Label(root, text='Result:')
label3.config(font=('helvetica', 10))
canvas1.create_window(100, 240, window=label3)

def add():
v1 = entry1.get()
v2 = entry2.get()

label4 = tk.Label(root, text= float(v1)+float(v2),font=('helvetica', 10, 'bold'),bg='white')
canvas1.create_window(210, 240, window=label4)

buttonAdd = tk.Button(text='+', command=add, bg='green', fg='white', font=('helvetica', 9, 'bold'), width = 5)
canvas1.create_window(90, 190, window=buttonAdd)

def sub():
v1 = entry1.get()
v2 = entry2.get()

label5 = tk.Label(root, text= float(v1)-float(v2),font=('helvetica', 10, 'bold'),bg='white')
canvas1.create_window(210, 240, window=label5)

buttonSub = tk.Button(text='–', command=sub, bg='green', fg='white', font=('helvetica', 9, 'bold'), width = 5)
canvas1.create_window(140, 190, window=buttonSub)

def mul():
v1 = entry1.get()
v2 = entry2.get()

label6 = tk.Label(root, text= float(v1)*float(v2),font=('helvetica', 10, 'bold'),bg='white')
canvas1.create_window(210, 240, window=label6)

buttonMul = tk.Button(text='x', command=mul, bg='green', fg='white', font=('helvetica', 9, 'bold'), width = 5)
canvas1.create_window(190, 190, window=buttonMul)

def div():
v1 = entry1.get()
v2 = entry2.get()

label7 = tk.Label(root, text= float(v1)/float(v2),font=('helvetica', 10, 'bold'),bg='white')
canvas1.create_window(210, 240, window=label7)

buttonDiv = tk.Button(text='/', command=div, bg='green', fg='white', font=('helvetica', 9, 'bold'), width = 5)
canvas1.create_window(240, 190, window=buttonDiv)

root.mainloop()