[issue43908] array.array should remain immutable: add Py_TPFLAGS_IMMUTABLETYPE flag

[STINNER Victor]

STINNER Victor <vstinner at python.org> added the comment:

PyStdPrinter_Type implements tp_new, but tp_init always fail:

static int
stdprinter_init(PyObject *self, PyObject *args, PyObject *kwds)
{
    PyErr_SetString(PyExc_TypeError,
                    "cannot create 'stderrprinter' instances");
    return -1;
}

Maybe it should use the Py_TPFLAGS_IMMUTABLETYPE flag instead?

Instances must be created with PyFile_NewStdPrinter() which doesn't use tp_new nor tp_init.

Erlend: do you want to propose a PR?

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Python tracker <report at bugs.python.org>
<https://bugs.python.org/issue43908>
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