Re: wxWindow GetPosition() bug???
mardif <[EMAIL PROTECTED]> wrote: > Hi, > I've found a strange behavior in method GetPosition() of wxWindow class > > ( and derived ). > On windows, if you create a window object > > frame = wx.Frame(None, -1, "TESTING") > > and you set the position to: > frame.SetPosition( (300, 45000) ) > > If you call method GetPosition, the result will be: > frame.GetPosition() > >>> (300, 32767) > > 32767 is the integer limit. Why GetPosition() returns this value??? and > > why on Unix Platform this problem was not found?? > > thx very much! Traditionally, there was a 16(15?) bit limit for coordinates on X Window systems. Maybe the wx implementations tries to be smarter than X itself and restricts the positions artificially. Maybe Windows has sch a limit itself... I don't really know, other than 'never try to access coordinates that are 'much' bigger than what is actually visible'... Andre' -- http://mail.python.org/mailman/listinfo/python-list
Re: Loading module via full path
Gary Herron <[EMAIL PROTECTED]> wrote:
> 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(PyObject * pObject) : m_pObject(pObject) { /*Check();*/ }
~CPyObject() { Py_XDECREF(m_pObject); }
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(const char * mod, const char * path)
{
CPyObject pyImpModule ( PyImport_Import(PyString_FromString("imp")) );
CPyObject pyImpFindModuleFunc ( PyObject_GetAttrString(pyImpModule,
"find_module") );
CPyObject pyImpFindModuleArgs ( Py_BuildValue("s[s]", mod, path) );
CPyObject pyImpFindModuleRes ( PyObject_CallObject(pyImpFindModuleFunc,
pyImpFindModuleArgs) );
CPyObject pyImpLoadModuleFunc ( PyObject_GetAttrString(pyImpModule,
"load_module") );
CPyObject pyImpLoadModuleArgs ( Py_BuildValue("sOOO",
mod,
PyTuple_GetItem(pyImpFindModuleRes, 0),
PyTuple_GetItem(pyImpFindModuleRes, 1),
PyTuple_GetItem(pyImpFindModuleRes, 2)
));
return PyObject_CallObject(pyImpLoadModuleFunc, pyImpLoadModuleArgs);
}
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'
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Re: Loading module via full path
Andre Poenitz <[EMAIL PROTECTED]> wrote: > 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' -- http://mail.python.org/mailman/listinfo/python-list
Re: Stack trace in C
Just <[EMAIL PROTECTED]> wrote: > >> On Tue, 25 Jul 2006 14:20:41 +0200, Andre Poenitz wrote: >> > >> > >> >Bear with me - I am new to Python. (And redirect me to a more suitable >> >newsgroup in case this one is not appropriate.) >> > >> >I am trying to embed Python into a C++ application and want to get back >> >a backtrace in case of errors in the python code. >> >> I think you'd have more luck with the traceback module, which has such >> methods as format_exception and print_tb. > > From C, PyErr_Print() is often handy (if only for debugging). I'd like to display the backtrace i a fancy gui widget, and PyErr_Print sends everything to stderr... Andre' -- http://mail.python.org/mailman/listinfo/python-list
Re: Stack trace in C
Jean-Paul Calderone <[EMAIL PROTECTED]> wrote: > On Tue, 25 Jul 2006 14:20:41 +0200, Andre Poenitz <[EMAIL PROTECTED]> wrote: >> >> >>Bear with me - I am new to Python. (And redirect me to a more suitable >>newsgroup in case this one is not appropriate.) >> >>I am trying to embed Python into a C++ application and want to get back >>a backtrace in case of errors in the python code. > > I think you'd have more luck with the traceback module, which has such > methods as format_exception and print_tb. That's where I got my 'inspiration' from. Unfortunately my attempt to translate this into C failed, and I can't see the reason. Thanks for the hint nevertheless Andre' -- http://mail.python.org/mailman/listinfo/python-list
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' -- http://mail.python.org/mailman/listinfo/python-list
Stack trace in C
Bear with me - I am new to Python. (And redirect me to a more suitable
newsgroup in case this one is not appropriate.)
I am trying to embed Python into a C++ application and want to get back
a backtrace in case of errors in the python code.
This works well with e.g.
import sys
def u3():
xx() # raise an error
def u2():
u3()
def u1():
u2()
def f():
try:
u1()
except NameError:
type, value, tb = sys.exc_info()
#f = tb.tb_frame
#while f:
# print f.f_lineno, f.f_code.co_name
# f = f.f_back
#print "==="
while tb:
f = tb.tb_frame
print f.f_lineno, f.f_code.co_name
tb = tb.tb_next
def d1():
f()
def d2():
d1()
d2()
on the python side.
However, I want to do that on the C side.
So far I have code similar to
std::ostringstream msg;
[...]
#if 1
// Branch 1
PyObject * exc_type = 0;
PyObject * exc_value = 0;
PyObject * exc_traceback = 0;
PyErr_Fetch(&exc_type, &exc_value, &exc_traceback);
PyObject * tb_frame = PyObject_GetAttrString(exc_traceback, "tb_frame");
#else
// Branch 2
PyObject * pName = PyString_FromString("sys");
PyObject * pModule = PyImport_Import(pName);
PyObject * pFunc = PyObject_GetAttrString(pModule, "exc_info");
PyObject * pResult = PyObject_CallObject(pFunc, NULL);
PyObject * tb_frame = PySequence_GetItem(pResult, 2);
#endif
while (tb_frame != Py_None) {
PyObject * f_code = PyObject_GetAttrString(tb_frame, "f_code");
PyObject * f_lineno = PyObject_GetAttrString(tb_frame, "f_lineno");
int lineno = PyInt_AsLong(f_lineno);
msg << " in line " << lineno << "\n";
PyObject * tmp1 = PyObject_GetAttrString(tb_frame, "f_back");
PyObject * tmp2 = PyObject_GetAttrString(tb_frame, "tb_next");
// Now, neither tmp1 nor tmp2 is usable
// tb_frame = tmpX;
}
}
[Plus some reference counting/error checking code I left out]
The 'Branch 1' version works for a sinmgle frame, but then tmp1 will be
None and tmp2 0 at the end of the iteration and so no further frames
are found.
The 'Branch 2' version creates immediatly tb_frame as None and
does not even enter the loop body once.
So what am I doing wrong? How do I get the equivalent of the python
code in C?
Andre'
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