Python 当给出某些输入时，我是否可以忽略某些代码？

我正在构建一个基于python的基本计算器，以了解编程的基本知识。基本上，我的问题是，当我用计算器计算一个数字的平方时，它仍然会问我的第二个数字，虽然它给出了正确的答案，但我希望它在使用平方函数时不要问我的第二个数字

name = input("Enter your name: ")
lastname = input("Enter your last name: ")
print("Welome " + name + " " + lastname + "!")
num1 = float(input("Enter a number to calculate: "))
Component = input("*, /, +, -...?????: ")
num2 = float(input("Enter your last number...: "))
if Component == "*":
    print(num1 * num2)
if Component == "+":
    print(num1 + num2)
if Component == "/":
    print(num1 / num2)
if Component == "-":
    print(num1 - num2)
if Component == "sqr":
    print(num1 ** 2)
    

---

如果Component.strip（）！=“sqr”则为0

完整代码如下：

name = input("Enter your name: ")
lastname = input("Enter your last name: ")
print("Welome " + name + " " + lastname + "!")
num1 = float(input("Enter a number to calculate: "))
Component = input("*, /, +, -...?????: ")
num2 = float(input("Enter your last number...: ")) if Component.strip() != "sqr" else 0
if Component == "*":
    print(num1 * num2)
if Component == "+":
    print(num1 + num2)
if Component == "/":
    print(num1 / num2)
if Component == "-":
    print(num1 - num2)
if Component == "sqr":
    print(num1 ** 2)