使用Python C API命名参数?
如何使用Python C API模拟以下Python函数使用Python C API命名参数?,python,c,python-c-api,named-parameters,Python,C,Python C Api,Named Parameters,如何使用Python C API模拟以下Python函数 def foo(bar, baz="something or other"): print bar, baz (即,可以通过以下方式调用: >>> foo("hello") hello something or other >>> foo("hello", baz="world!") hello world! >>> foo("hello", "world!") hello,
def foo(bar, baz="something or other"):
print bar, baz
(即,可以通过以下方式调用:
>>> foo("hello")
hello something or other
>>> foo("hello", baz="world!")
hello world!
>>> foo("hello", "world!")
hello, world!
)请参见:您想使用PyArg_ParseTupleAndKeywords
,在我给出的URL中记录
例如:
def foo(bar, baz="something or other"):
print bar, baz
变成(大致上——还没有测试过!):
#include "Python.h"
static PyObject *
themodule_foo(PyObject *self, PyObject *args, PyObject *keywds)
{
char *bar;
char *baz = "something or other";
static char *kwlist[] = {"bar", "baz", NULL};
if (!PyArg_ParseTupleAndKeywords(args, keywds, "s|s", kwlist,
&bar, &baz))
return NULL;
printf("%s %s\n", bar, baz);
Py_INCREF(Py_None);
return Py_None;
}
static PyMethodDef themodule_methods[] = {
{"foo", (PyCFunction)themodule_foo, METH_VARARGS | METH_KEYWORDS,
"Print some greeting to standard output."},
{NULL, NULL, 0, NULL} /* sentinel */
};
void
initthemodule(void)
{
Py_InitModule("themodule", themodule_methods);
}