Hi,
I have wrapped a library from C++ to Python using SWIG. But I am facing
problems while importing and using it in Python.
$ python
>>> import pyossimtest
>>> import pyossim
>>> a = ["Image1.png","Image2.png"]
>>> b = pyossimtest.Info()
>>> b.initialize(len(a),a)
Traceback (most recent call last):
File "<stdin>", line 1, in <module>
File "pyossimtest.py", line 84, in initialize
def initialize(self, *args): return _pyossimtest.Info_initialize(self,
*args)
TypeError: in method 'Info_initialize', argument 3 of type 'char *[]'
What does this error message imply? I have already handled char** as a
special case in swig using typemaps.
Here is the code excerpt from the swig-generated .cxx file:
SWIGINTERN PyObject *_wrap_Info_initialize(PyObject *SWIGUNUSEDPARM(self),
PyObject *args) {
PyObject *resultobj = 0;
pyossimtest::Info *arg1 = (pyossimtest::Info *) 0 ;
int arg2 ;
char **arg3 ;
void *argp1 = 0 ;
int res1 = 0 ;
PyObject * obj0 = 0 ;
PyObject * obj1 = 0 ;
bool result;
if (!PyArg_ParseTuple(args,(char *)"OO:Info_initialize",&obj0,&obj1))
SWIG_fail;
res1 = SWIG_ConvertPtr(obj0, &argp1,SWIGTYPE_p_pyossimtest__Info, 0 | 0
);
if (!SWIG_IsOK(res1)) {
SWIG_exception_fail(SWIG_ArgError(res1), "in method '" "Info_initialize"
"', argument " "1"" of type '" "pyossimtest::Info *""'");
}
arg1 = reinterpret_cast< pyossimtest::Info * >(argp1);
{
int i;
if (!PyList_Check(obj1))
{
PyErr_SetString(PyExc_ValueError, "Expecting a list");
return NULL;
}
arg2 = PyList_Size(obj1);
arg3 = (char **) malloc((arg2+1)*sizeof(char *));
for (i = 0; i < arg2; i++)
{
PyObject *s = PyList_GetItem(obj1,i);
if (!PyString_Check(s))
{
free(arg3);
PyErr_SetString(PyExc_ValueError, "List items must be strings");
return NULL;
}
arg3[i] = PyString_AsString(s);
}
arg3[i] = 0;
}
{
try
{
result = (bool)(arg1)->initialize(arg2,arg3);
}
catch (const std::exception& e)
{
SWIG_exception(SWIG_RuntimeError, e.what());
}
}
resultobj = SWIG_From_bool(static_cast< bool >(result));
{
if (arg3) free(arg3);
}
return resultobj;
fail:
{
if (arg3) free(arg3);
}
return NULL;
}
Kindly help.
Thanks and regards,
Vipul Raheja
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