Even better python calc

import tkinter
from tkinter import *

master = tkinter.Tk()

e0 = Entry(width=10)
e0.place(x=60,y=5)
e1 = Entry(width=10)
e1.place(x=60,y=30)
e2 = Entry(width=10)
e2.place(x=60,y=55)


l0 = Label(master, text="First:")
l0.place(x=5,y=5)
l1 = Label(master, text="Operator:")
l1.place(x=5,y=30)
l2 = Label(master, text="Second:")
l2.place(x=5,y=55)
l3 = Label(master, text="Answer:")
l3.place(x=5,y=80)
l3 = Label(master, text="")
l3.place(x=60,y=80)

def func(event):
    if e1.get()=="+":
        l3.config(text=int(e0.get())+int(e2.get()))
    elif e1.get()=="-":
        l3.config(text=int(e0.get())-int(e2.get()))
    elif e1.get=="*":
        l3.config(text=int(e0.get())*int(e2.get()))
    elif e1.get=="/":
        l3.config(text=int(e0.get())/int(e2.get()))
    else:
        l3.config(text=int(e0.get())+int(e2.get()))

master.bind('<Return>', func)

master.geometry("200x100")
master.wm_title("Calc")
master.mainloop()