Python 在Hy中指定元类的语法

Hy中指定元类的语法是什么。我尝试了以下方法：

(defclass Metaclass [] )

(defclass Foo [ :meta Metaclass ] )
(defclass Foo [ [:meta Metaclass] ] )

---

但是这不起作用

您可以使用与Python相同的方法来执行此操作

这是在Python3和最新的Hy主机上，使用repl中的

--spy

选项来显示Python编译

=> (defclass Foo [:metaclass print])
class Foo(metaclass=print):
    pass


None

Foo () {'__module__': '__console__', '__qualname__': 'Foo'}

在Python2上

=> (defclass Foo []
...  (setv __metaclass__ print))
class Foo:
    __metaclass__ = print


None

Foo () {'__module__': '__console__', '__metaclass__': <built-in function print>}

=>（defclass Foo[]
…（setv元类打印）
Foo类：
__元类\打印
没有一个
Foo（）{uuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuu

如果您需要它为其中一个工作，您可以尝试安装

six

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