Calculator in Python 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): if y == 0: return "Error! Division by zero." return x / y print("Select operation:") print("1. Add") print("2. Subtract") print("3. Multiply") print("4. Divide") choice = input("Enter choice (1/2/3/4): ") num1 = float(input("Enter first number: ")) num2 = float(input("Enter second number: ")) if choice == '1': print("Result:", add(num1, num2)) elif choice == '2': print("Result:", subtract(num1, num2)) elif choice == '3': print("Result:", multiply(num1, num2)) elif choice == '4': print("Result:", divide(num1, num2)) else: print("Invalid input")

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