multi-threaded c++ callback problem

[pydev]

hi all,
 
i'm building a wrapper for a multi-threaded c++ library to use it in python. 
everything works fine except the callback.
 
the c++ code to call the python function:
//---//
void pyCallEventCallback(  CALL hCall, 
LINE hLine, 
CALLSTATE_MAJOR eMajor,
CALLSTATE_MINOR eMinor,  
PyObject* def )
{
if( !PyCallable_Check( def ) ) 
{
PyErr_SetString( PyExc_TypeError, "Need a callable object!" );
return;
}
printf( "EventCallback hCall: %i, hLine: %i, eMajor: %i, eMinor: %i\n", 
hCall, hLine, eMajor, eMinor);
PyObject* arglist = Py_BuildValue("()", hCall, hLine, eMajor, eMinor);
 
// if i comment out next  line it works!
PyEval_CallObject( def, arglist ); 
 
Py_XDECREF(arglist);
}
//---//
 
the python callback function looks like this:
//---//
def callback( *args ):
print "callback:", args
//---//
 
the soutput i get looks like this:
 
EventCallback hCall: 1, hLine: 1, eMajor: 2000, eMinor: 2001
callback: ( 1, 1, 2000, 2001 )
EventCallback hCall: 1, hLine: 1, eMajor: 2500, eMinor: 2501
callback: ( 1, 1, 2500, 2501 )
EventCallback hCall: 1, hLine: 1, eMajor: 8000, eMinor: 8001
an then instead of: callback: ( 1, 1, 8000, 8001)
it crashes
 
there are no other python interactions between the callback calls.
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[pyDev]

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extending class static members and inheritance

[Fabian PyDEV]

Hi All,

I have a question.

Let says I have the following two classes:

class Base(object):
__mylist__ = ["value1", "value2"]

def somemethod(self):
pass


class Derived(Base):
__mylist__ = ["value3", "value4"]

def anothermethod(self):
pass




what I would like to accomplish is that the class Derived has the member 
__mylist__ extended or merged as ["value1", "value2", "value3", "value4"].

Is there anyway I could accomplish this?

I was thinking on accomplishing this as follows:


class Derived(Base):
__mylist__ = Base.__mylist__ + ["value3", "value4"]

def anothermethod(self):
pass


Is there a better way? Perhaps a decorator?


Thanks in advance and regards,
Fabian

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Different cache filename

[Fabian PyDEV]

Hi,

when load a module "mymodule.py" with importlib.machinery.SourceFileLoader a 
bytecode file is created as mymodule.cpython-33.pyc.

If I load a module "mymodule.ext.py" the same way the same bytecode file is 
created as mymodule.cpython-33.pyc.

Is there any way I could tell python to generate the bycode file as 
mymodule.ext.cpython-33.pyc?

Regards,
Fabian

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