Python Calculator

#Python Calculator
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)
def Power(x, y):
    return (x ** y)
def Percentage(x, y):
    return (x / y * 100)
def Calculator():
    print("PyCaluculator")
    num1 = float(input("your 1st number: "))
    num2 = float(input('your second Number: '))
    op = input('Your operation +,-,x,/,power, percentage')
    if op.lower() == '+':
        print(Add(num1, num2))
    elif op.lower() == '-':
        print(Subtract(num1, num2))
    elif op.lower() == 'x':
        print(Multiply(num1, num2))
    elif op.lower() == '/':
        print(Divide(num1, num2))
    elif op.lower() == 'power':
        print(Power(num1, num2))
    elif op.lower() == 'percentage':
        print(Percentage(num1, num2))
    else:
        print("invalid")
    do = input("do you want to continue: ")
    if do.lower() == 'yes':
        Calculator()
    else:
        print("Thank you")
Calculator()