Mirror
/
cpython
mirror of https://github.com/python/cpython
4
1
Fork 0
Code Issues Releases Wiki Activity

#9037: add example how to raise custom exceptions from C code.

This commit is contained in:
Georg Brandl 2010-08-02 20:21:21 +00:00
parent 1209a8f9bc
commit 9c491c9b28
1 changed files with 20 additions and 1 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

21
Doc/extending/extending.rst
View File

@ -226,9 +226,28 @@ needed to ensure that it will not be discarded, causing :cdata:`SpamError` to
become a dangling pointer. Should it become a dangling pointer, C code which
raises the exception could cause a core dump or other unintended side effects.
We discuss the use of PyMODINIT_FUNC as a function return type later in this
We discuss the use of ``PyMODINIT_FUNC`` as a function return type later in this
sample.
The :exc:`spam.error` exception can be raised in your extension module using a
call to :cfunc:`PyErr_SetString` as shown below::
static PyObject *
spam_system(PyObject *self, PyObject *args)
{
const char *command;
int sts;
if (!PyArg_ParseTuple(args, "s", &command))
return NULL;
sts = system(command);
if (sts < 0) {
PyErr_SetString(SpamError, "System command failed");
return NULL;
}
return PyLong_FromLong(sts);
}
.. _backtoexample: