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Loading module via full path

Hi all.

Is there a way to load a module given a full path to the module
without extending sys.path first?

Andre'

Aug 21 '06 #1
3 1818
Andre Poenitz wrote:
Hi all.

Is there a way to load a module given a full path to the module
without extending sys.path first?

Andre'

The standard module named "imp" can help you with this.

Gary Herron
Aug 21 '06 #2
Andre Poenitz <an***@svn2.was y.dewrote:
Hi all.

Is there a way to load a module given a full path to the module
without extending sys.path first?
Ok. imp.find_module () and imp.load_module () seem to do what I need.

Andre'
Aug 22 '06 #3
Gary Herron <gh*****@island training.comwro te:
Andre Poenitz wrote:
>Hi all.

Is there a way to load a module given a full path to the module
without extending sys.path first?

The standard module named "imp" can help you with this.
Thank you. I got stuck on http://docs.python.org/api/importing.html
(as I need it to be called from C(++)) and found no way to specify a path there
[and there aren't too many cross references in the python docs *sigh*]

I have now something similar to

class CPyObject
{
public:
explicit CPyObject(PyObj ect * pObject) : m_pObject(pObje ct) { /*Check();*/ }
~CPyObject() { Py_XDECREF(m_pO bject); }
operator PyObject *() { return m_pObject; }
private:
CPyObject(const CPyObject &); // intentionally not implemented
void operator=(const CPyObject &); // intentionally not implemented
PyObject * m_pObject;
};

static PyObject * LoadModule(cons t char * mod, const char * path)
{
CPyObject pyImpModule ( PyImport_Import (PyString_FromS tring("imp")) );

CPyObject pyImpFindModule Func ( PyObject_GetAtt rString(pyImpMo dule, "find_modul e") );
CPyObject pyImpFindModule Args ( Py_BuildValue(" s[s]", mod, path) );
CPyObject pyImpFindModule Res ( PyObject_CallOb ject(pyImpFindM oduleFunc, pyImpFindModule Args) );

CPyObject pyImpLoadModule Func ( PyObject_GetAtt rString(pyImpMo dule, "load_modul e") );
CPyObject pyImpLoadModule Args ( Py_BuildValue(" sOOO",
mod,
PyTuple_GetItem (pyImpFindModul eRes, 0),
PyTuple_GetItem (pyImpFindModul eRes, 1),
PyTuple_GetItem (pyImpFindModul eRes, 2)
));
return PyObject_CallOb ject(pyImpLoadM oduleFunc, pyImpLoadModule Args);
}

which seems to do what I want even if it looks a bit too verbose for my taste and I
don't know whether I go the reference counting right.

Thanks for the hint,
Andre'
Aug 22 '06 #4

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