[Pyrex] Pyrex importing question.

[Yann Vernier]

On Mon, Nov 15, 2004 at 04:11:34PM -0500, Blake Winton wrote:
> Can anyone offer me some source code to print out a stacktrace from 
> C-land?  I've got code in there that does it, but it tries to import the 
>  format_exception module, which then gives me a SystemError.

Here's a sample from a module called "Blender". Its initializer is thus
called initBlender, but the C code that links to this calls
M_Blender_Init() so that's the function I defined. You can use
PyErr_Occurred() anywhere; PyErr_Print() will print a backtrace and the
exception, then clear the error condition so the exception won't make
it further. It may not be called if there was no error.

# * since Pyrex will already have included relevant headers
# except for initBlender() which is actually from *this* module
cdef extern from *:
  void PyErr_Print()
  void *PyErr_Occurred()
  cdef public void initBlender()  # Pyrex-generated initializer

cdef public void M_Blender_Init():
  initBlender()
  if PyErr_Occurred():
    PyErr_Print()

-- 
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