How to use loop in elseif in Python [duplicate]

print("Calculator")
print ("1 - Addition")
print ("2 - Subtraction")
print ("3 - Multiplication")
print ("4 - Division")
func = None
func = int(input())
def function():
    if (func == 1):
        print ("Addition")
        print ("Enter first number")
        x= int(input())
        print ("Enter second number")
        y = int(input())
        print (x+y)

    elif(func == 2):
        print ("Subtraction")
        print ("Enter first number from which second number should be subtracted")
        x= int(input())
        print ("Enter second number")
        y = int(input())
        print (x-y)

    elif(func == 3):
        print ("Multiplication")
        print ("Enter first number")
        x= int(input())
        print ("Enter second number")
        y = int(input())
        print (x*y)

    elif(func == 4):
        print ("Division")
        print ("Enter first number")
        x= int(input())
        print ("Enter second number")
        y = int(input())
        print (x/y)

    else:
        print ("Please enter corrent number for function")
        func = int(input())
        function() 

function() 

As you can see in my code I want to make a python simple calculator and when I input any other number greater than four. I want my application to restart the function.