CODEWITHSUNDEEP
pythoncpython-c-extension
Wael Ben Zid El Guebsi
Wael Ben Zid El Guebsi

Reputation: 2750

Python C Extension Keyword arguments

Description of problem:

When I call method defined like this:

static PyMethodDef Parser_methods[] = {
    {"read", (PyCFunction)Parser_read, METH_KEYWORDS, "read from input source"},
    {NULL, NULL, 0, NULL} 
};

static PyObject *
Parser_read(Parser * const self, PyObject * unused0, PyObject * unused1)
{
...
}

I got: 

SystemError: Bad call flags in PyCFunction_Call. METH_OLDARGS is no longer supported!

The code works fine on Python2, but crashes on Python3

Upvotes: 2

Views: 2170

Answers (2)

QuestionC
QuestionC

Reputation: 10064

Could be this bug...

http://bugs.python.org/issue11587

Which means it's a python version issue. One fix seems to be to use METH_KEYWORDS | METH_VARARGS.

Upvotes: 3

QuestionC
QuestionC

Reputation: 10064

Parser_read should be

static PyObject* Parser_read(PyObject *self, PyObject *args)

Upvotes: 0

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