如何在Python中动态生成嵌套类？

Question

我有一个众所周知的类，我需要为这个众所周知的类动态地生成一些嵌套类

我如何做到这一点

def AddNestedClasses(cls):
    inner1  = type("Inner")
    # How do I inject the class 'Inner' into 'cls'?
    return cls

@AddNestedClasses
class Outer:
    pass

Answer 1

def AddNestedClasses(cls):
    inner1  = type("Inner", (), {})
    cls.Inner = inner1
    return cls

@AddNestedClasses
class Outer:
    pass

print(dir(Outer))