Simple Calculator in Python

  This program is a simple calculator that performs addition, subtraction, multiplication, and division.

op = input("Enter operator (+, -, *, /): ")

num1 = float(input("Enter first number: "))

num2 = float(input("Enter second number: "))

if op == '+':

    print(num1 + num2)

elif op == '-':

    print(num1 - num2)

elif op == '*':

    print(num1 * num2)

elif op == '/':

    if num2 != 0:

        print(num1 / num2)

    else:

        print("Error! Division by zero.")

else:

    print("Invalid operator")