def add(x, y): return x + y def subtract(x, y): return x - y def multiply(x, y): return x * y def divide(x, y): return x / y
print("Select Operation.") print("1.Add") print("2.Subtract") print("3.Mulitply") print("4.Divide")
#take input from the user choice = input("Enter choice(1/2/3/4):") num1 = float(input("Enter first number: ")) num2 = float(input("Enter second number: "))
if choice == '1': print(num1, "+", num2, "=", add(num1,num2)) elif choice == '2': print(num1, "-", num2, "=", subtract(num1,num2)) elif choice == '3': print(num1, "*", num2, "=", multiply(num1,num2)) elif choice == '4': print(num1, "/", num2, "=", divide(num1,num2)) else: print("Invalid Input") Python Calculator