哪里存储了Python中int实例的int值？-WhereisstoredtheintvalueofaintinstanceinPython?

The int type in python offers two attributes named numerator and real that have the same content as __int__().

python中的int类型提供了两个名为numerator和real的属性,它们与__int __()具有相同的内容。

As all of these 3 values returns the same internal attribute, I guess real is a property like:

由于所有这三个值都返回相同的内部属性,我猜真实是一个属性,如:

@property
def real(self):
   return self.__int

However I cannot find this hidden property dir dir or either a = int(); a._int__ in IPython.

但是我找不到这个隐藏属性dir dir或a = int(); IPython中的a._int __ 。

So I looked at the source code and found this:

所以我查看了源代码,发现了这个:

static PyGetSetDef int_getset[] = {
    {"real",
     (getter)int_int, (setter)NULL,
     "the real part of a complex number",
     NULL},
    {"imag",
     (getter)int_get0, (setter)NULL,
     "the imaginary part of a complex number",
     NULL},
    {"numerator",
     (getter)int_int, (setter)NULL,
     "the numerator of a rational number in lowest terms",
     NULL},
    {"denominator",
     (getter)int_get1, (setter)NULL,
     "the denominator of a rational number in lowest terms",
     NULL},
    {NULL}  /* Sentinel */
};

And this:

static PyObject *
int_int(PyIntObject *v)
{
    if (PyInt_CheckExact(v))
        Py_INCREF(v);
    else
        v = (PyIntObject *)PyInt_FromLong(v->ob_ival);
    return (PyObject *)v;
}

But this the furthest I can go by myself.

但这是我能自己走的最远的。

Where the actual value of an integer is stored inside an integer instance?

整数的实际值存储在整数实例中的位置?

The main reason for this question is that I want to extend the float type with a MyFloat where I would like to refer to the value of the instance.

这个问题的主要原因是我想用MyFloat扩展float类型,我想在这里引用实例的值。

1 个解决方案

x = 8
dir(x)

class foo(int):
    def __getitem__(self):
        return self + 1

foo(8).__getitem__()