Python 3-避免实例共享或覆盖属性

class MyClass:
    def __init__(self):
        self.my_property = "example"

obj1 = MyClass()
obj2 = MyClass()

obj1.my_property = "value1"
obj2.my_property = "value2"

print(obj1.my_property)  # 输出：value1
print(obj2.my_property)  # 输出：value2

class MyClass:
    my_property = "example"

obj1 = MyClass()
obj2 = MyClass()

obj1.my_property = "value1"
obj2.my_property = "value2"

print(obj1.my_property)  # 输出：value1
print(obj2.my_property)  # 输出：value2
print(MyClass.my_property)  # 输出：example

class MyClass:
    def __init__(self):
        self._my_property = "example"

    @property
    def my_property(self):
        return self._my_property

    @my_property.setter
    def my_property(self, value):
        self._my_property = value

obj1 = MyClass()
obj2 = MyClass()

obj1.my_property = "value1"
obj2.my_property = "value2"

print(obj1.my_property)  # 输出：value1
print(obj2.my_property)  # 输出：value2