Cython中的单例由类方法处理

Question

这是一个问题，后面是Singleton is not working in Cython的答案

当MyCythonClass没有要初始化的属性时，上述链接中的解决方案将起作用。

如果我具有初始化myCythonClass的属性，则该解决方案似乎无法正常工作。

我对Cython和C还是很陌生，感谢您的帮助。

cdef class Singleton:
    _instances = {}
    @classmethod
    def instance(cls, *args, **kwargs):
        if cls not in cls._instances:
            cls._instances[cls] = cls(*args, **kwargs)
        return cls._instances[cls]

cdef class MyCythonClass(Singleton):
    cdef int apple, orange
    def __cinit__(self, int apple, int orange):
        self.apple = apple
        self.orange = orange
    pass

c = MyCythonClass(1,2).instance()
d = MyCythonClass(3,4).instance()
e = c is d  # True

print 'res=', e

错误：

Traceback (most recent call last):
  File "run_testing.py", line 3, in <module>
    c = MyCythonClass().instance(1,2)
  File "testing.pyx", line 12, in testing.MyCythonClass.__cinit__
    def __cinit__(self, int apple, int orange):
TypeError: __cinit__() takes exactly 2 positional arguments (0 given)