basic calculator with gui.py

#I will try to update this more efficient with good screen hence this is the basic start

#tkinter gui calculator
from tkinter import *
root=Tk()
root.title("simple calculator")

e=Entry(root,width=30,borderwidth=10)
e.grid(row=0,column=0,columnspan=3, padx=10 , pady=10)

def button_click(number):
    current=e.get()
    e.delete(0,END)
    e.insert(0,str(current) + str(number))
    return

#clearing the screen
def button_clear():
    e.delete(0,END)

#adding two numbers
def button_add():
    first_number=e.get()
    global f_num
    global math
    math="addition"
    f_num=int(first_number)
    e.delete(0,END)

def button_substract():
    first_number=e.get()
    global f_num
    global math
    math="substarction"
    f_num=int(first_number)
    e.delete(0,END)
    return

def button_multiply():
    first_number=e.get()
    global f_num
    global math
    math="multiply"
    f_num=int(first_number)
    e.delete(0,END)
    return

def button_division():
    first_number=e.get()
    global f_num
    global math
    math="division"
    f_num=int(first_number)
    e.delete(0,END)
    return

def button_equal():
    second_number=e.get()
    e.delete(0,END)
    if math == "addition":
        e.insert(0,f_num + int(second_number))
    if math == "substarction":
        e.insert(0,f_num - int(second_number))
    if math == "multiply":
        e.insert(0,f_num * int(second_number))
    if math == "division":
        e.insert(0,f_num / int(second_number))

#define Buttons

button_1=Button(root,text="1",padx=40,pady=20,command=lambda: button_click(1))
button_2=Button(root,text="2",padx=40,pady=20,command=lambda: button_click(2))
button_3=Button(root,text="3",padx=40,pady=20,command=lambda: button_click(3))
button_4=Button(root,text="4",padx=40,pady=20,command=lambda: button_click(4))
button_5=Button(root,text="5",padx=40,pady=20,command=lambda: button_click(5))
button_6=Button(root,text="6",padx=40,pady=20,command=lambda: button_click(6))
button_7=Button(root,text="7",padx=40,pady=20,command=lambda: button_click(7))
button_8=Button(root,text="8",padx=40,pady=20,command=lambda: button_click(8))
button_9=Button(root,text="9",padx=40,pady=20,command=lambda: button_click(9))
button_0=Button(root,text="0",padx=40,pady=20,command=lambda: button_click(0))
button_add=Button(root,text="+",padx=39,pady=20,command= button_add)
button_eqaul=Button(root,text="=",padx=91,pady=20,command=button_equal)
button_clear=Button(root,text="clear",padx=79,pady=20,command=button_clear)

button_substract=Button(root,text="-",padx=41,pady=20,command= button_substract)
button_multiply=Button(root,text="*",padx=39,pady=20,command= button_multiply)
button_division=Button(root,text="/",padx=39,pady=20,command= button_division)

#put buttons on screen

button_1.grid(row=3,column=0)
button_2.grid(row=3,column=1)
button_3.grid(row=3,column=2)

button_4.grid(row=2,column=0)
button_5.grid(row=2,column=1)
button_6.grid(row=2,column=2)

button_7.grid(row=1,column=0)
button_8.grid(row=1,column=1)
button_9.grid(row=1,column=2)

button_0.grid(row=4,column=0)

button_add.grid(row=5,column=0)
button_eqaul.grid(row=5,column=1,columnspan=2)
button_clear.grid(row=4,column=1,columnspan=2)
button_substract.grid(row=6,column=0)
button_division.grid(row=6,column=2)
button_multiply.grid(row=6,column=1)

#running through loop
root.mainloop()