如何遍历Python枚举，而忽略“不推荐使用"的枚举.那些? [英] How to iterate over Python enum ignoring "deprecated" ones?

问题描述

如果我设置了这样的枚举类

If I have an enum class set up like this

class fruits(enum.IntEnum):
    apples = 0
    bananas = 1  # deprecated
    pears = 2  # deprecated
    strawberries = 3

是否有一种方法可以动态获取未弃用的枚举(基本上只获取苹果和草莓?它们仅通过注释进行标记，而我不希望创建一组弃用的" notifs

Is there a way to dynamically get the enum's that are not deprecated (basically only fetch apples and strawberries? They're only marked via comment, and I prefer not to create a set of "deprecated" notifs

推荐答案

您将需要一些额外的代码来支持该用例.我将使用 aenum ¹ :

You'll need some extra code to support that use-case. I'll show it using aenum¹:

from aenum import IntEnum

class Fruits(IntEnum):
    _init_ = 'value active'
    #
    apples = 0, True
    bananas = 1, False  # deprecated
    pears = 2, False    # deprecated
    strawberries = 3, True
    #
    @classmethod
    def active(cls):
        return [m for m in cls if m.active]
    #
    @classmethod
    def deprecated(cls):
        return [m for m in cls if not m.active]

并在使用中:

>>> list(Fruits)
[<Fruits.apples: 0>, <Fruits.bananas: 1>, <Fruits.pears: 2>, <Fruits.strawberries: 3>]

>>> Fruits.apples
<Fruits.apples: 0>

>>> Fruits.bananas
<Fruits.bananas: 1>

>>> Fruits.active()
[<Fruits.apples: 0>, <Fruits.strawberries: 3>]

>>> Fruits.deprecated()
[<Fruits.bananas: 1>, <Fruits.pears: 2>]

---

¹ 披露:我是 Python的作者stdlib Enum ， enum34 反向端口和高级枚举( aenum )库(stdlib enum 的替代品).

---

¹ Disclosure: I am the author of the Python stdlib Enum, the enum34 backport, and the Advanced Enumeration (aenum) library (a drop-in replacement for the stdlib enum).

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