I have a doubt

I am doing an exercise of a calculator in Python 3.7.

I have the logic created and the calculator works correctly but I have the following doubt:

How do I ask the user if he wants to perform another operation and in the case of being IF he returns to choose the number of the operation he wants to perform and if he does not circulate the program?

I leave the code that I made. I apologize if the code is too long but I am learning this language and I am really new to programming

Thanks in advance to the people who respond

```
#Calculator
print ("Welcome to the calculator")
print ("These are the operations you can perform")
print ("1 - Sum")
print ("2 - Subtraction")
print ("3 - Multiplication")
print ("4 - Division")
number_one = ()
number_dos = ()
result = ()
operation = int (input ("Enter the number of the operation you want
perform: "))
if operation == 1:
try:
number_one = int (input ("Enter the first number:"))
number_dos = int (input ("Enter the second number:"))
except ValueError:
print ("That is not a number")
else:
result = number_one + number_dos
print ("The result of the sum is:" + str (result))
elif operation == 2:
try:
number_one = int (input ("Enter the first number:"))
number_dos = int (input ("Enter the second number:"))
except ValueError:
print ("That is not a number")
else:
result = number_one - number_dos
print ("The result of subtraction is:" + str (result))
elif operation == 3:
try:
number_one = int (input ("Enter the first number:"))
number_dos = int (input ("Enter the second number:"))
except ValueError:
print ("That is not a number")
else:
result = number_one * number_dos
print ("The result of the multiplication is:" + str (result))
elif operation == 4:
try:
number_one = int (input ("Enter the first number:"))
number_dos = int (input ("Enter the second number:"))
except ValueError:
print ("That is not a number")
else:
result = number_one / number_dos
print ("The result of the division is:" + str (result))
continue = input ("Do you want to continue? YES / NO")
```