Question

我必须使用 setter 和 getter 交换两个变量，但它给出了相同的确切答案

class Thing:
    def __init__(self, thing1=0, thing2=0):
        self._thing1 = thing1
        self._thing2 = thing2
    def get_assignThings(self) :
        return self._thing1, self._thing2
    def set_assignThings(self, x, y):
        self._thing1 = x
        x = y
        self._thing2 = y
        
obj = Thing()
obj.set_assignThings(2, 3)
print(obj.get_assignThings())

Answer 1

试试这个，

 def set_assignThings(self, x, y):        
        self._thing1, self._thing2 = y,x

Answer 2

更改返回或设置的顺序：即这里：return self._thing2, self._thing1 或self._thing1 = y self._thing2 = x

完整代码：

class Thing:
    def __init__(self, thing1=2, thing2=3):
        self._thing1 = thing1
        self._thing2 = thing2

    def get_assignThings(self):
        return self._thing2, self._thing1

    def set_assignThings(self, x, y):
        self._thing1 = x
        self._thing2 = y


obj = Thing()
obj.set_assignThings(2, 3)
print(obj.get_assignThings())

出局：

(3, 2)

我怎样才能交换这两个变量

2 个答案: