链接

没想到不少人能摸到我的博客地址，哈哈哈，引了一波。

Github仓库：https://github.com/kifuan/helang

状态机

我自己写了一个绑定枚举值和方法的小工具，挺好玩的。源码很短，就下面这几行：

from enum import Enum


class Methods:
    def __init__(self):
        self._methods = dict()

    def bind(self, enum: Enum):
        def bind_method(method: callable):
            self._methods[enum] = method
            return method
        return bind_method

    def apply(self, enum: Enum, *args, **kwargs):
        return self._methods[enum](*args, **kwargs)

之后用的时候可以这样用：

methods = Methods()

class State(Enum):
    A = 1
    B = 2

class Foo:
    def __init__(self):
        self._state = State.A
        self._end = False

    def start(self):
        while not self._end:
            methods.apply(self._state, self)

    @methods.bind(State.A)
    def _state_a(self):
        print('State A')
        self._state = State.B

    @methods.bind(State.B)
    def _state_b(self):
        print('State B')
        # End of running.
        self._end = True

foo = Foo()
foo.start()

运行结果：

State A
State B