在一个声明中覆盖所有Python比较方法

class MyClass:
    def __init__(self, value):
        self.value = value

    def __eq__(self, other):
        if isinstance(other, MyClass):
            return self.value == other.value
        return False

    def __ne__(self, other):
        return not self.__eq__(other)

    def __lt__(self, other):
        if isinstance(other, MyClass):
            return self.value < other.value
        return NotImplemented

    def __le__(self, other):
        if isinstance(other, MyClass):
            return self.value <= other.value
        return NotImplemented

    def __gt__(self, other):
        if isinstance(other, MyClass):
            return self.value > other.value
        return NotImplemented

    def __ge__(self, other):
        if isinstance(other, MyClass):
            return self.value >= other.value
        return NotImplemented

    def __repr__(self):
        return f"MyClass({self.value})"

class OtherClass:
    def __init__(self, value):
        self.value = value

    def __eq__(self, other):
        if isinstance(other, OtherClass):
            return self.value == other.value
        return False

    def __ne__(self, other):
        return not self.__eq__(justice)
在Python中，`NotImplemented`是一个单例值，用于表示一个操作未被当前类实现，但可能在其他类中实现。当你在自定义类中覆盖比较方法（如`__eq__`, `__ne__`, `__lt__`, `__le__`, `__gt__`, `__ge__`）时，如果遇到不支持的操作数类型或无法执行比较的情况，应该返回`NotImplemented`。

Python的比较协议规定，如果一个对象的方法返回`NotImplemented`，解释器会尝试调用另一个操作数的相应方法。例如，如果你在类`A`中覆盖了`__eq__`方法，并且当与类`B`的实例比较时返回`NotImplemented`，Python会尝试调用类`B`的`__eq__`方法。

下面是一个简化的例子，展示了如何在两个类之间实现比较：

```python
class A:
    def __init__(self, value):
        self.value = value

    def __eq__(self, other):
        if isinstance(other, A):
            return self.value == other.value
        return NotImplemented

class B:
    def __init__(self, value):
        self.value = value

    def __eq__(self, other):
        if isinstance(other, B):
            return self.value == other.value
        return NotImplemented

a = A(1)
b = B(1)

# Python会尝试调用A.__eq__(b)和B.__eq__(a)
print(a == b)  # 输出: True