On 22.11.2012 08:43, Hrvoje Niksic wrote:

nirmoy das <nirmoy.aiemd@gmail.com> writes:

...

ex:column_family('keyspace', 'CF', comparator_type=comparator)

You cannot use PyObject_CallObject to pass keyword arguments to a function; use PyObject_Call. The easiest way is to use Py_BuildValue to create the positional and the keyword arguments. For example:

/* error checking omitted for brevity */
PyObject *args, *kwds, *ret;
args = Py_BuildValue("ss", "keyspace", "CF");
kwds = Py_BuildValue("sO", "comparator_type", comparator");

Small typo:

kwds = Py_BuildValue("{sO}", "comparator_type", comparator);

The braces tell Py_BuildValue to create a dict.

For better readability, it also good to add the parens to the args format string:

args = Py_BuildValue("(ss)", "keyspace", "CF");

See http://docs.python.org/3/c-api/arg.html#Py_BuildValue

for more information.

ret = PyObject_Call(column_family, args, kwds)
Py_DECREF(args);
Py_DECREF(kwds);

You should probably also have a look at this tutorial:

http://docs.python.org/3/extending/extending.html#calling-python-functions-f...

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