diff options
Diffstat (limited to 'Doc/extending/extending.rst')
| -rw-r--r-- | Doc/extending/extending.rst | 13 |
1 files changed, 5 insertions, 8 deletions
diff --git a/Doc/extending/extending.rst b/Doc/extending/extending.rst index af983b3..83fa520 100644 --- a/Doc/extending/extending.rst +++ b/Doc/extending/extending.rst @@ -74,7 +74,7 @@ shortly how it ends up being called):: if (!PyArg_ParseTuple(args, "s", &command)) return NULL; sts = system(command); - return Py_BuildValue("i", sts); + return PyLong_FromLong(sts); } There is a straightforward translation from the argument list in Python (for @@ -266,13 +266,10 @@ the string we just got from :cfunc:`PyArg_ParseTuple`:: sts = system(command); -Our :func:`spam.system` function must return the value of :cdata:`sts` as a -Python object. This is done using the function :cfunc:`Py_BuildValue`, which is -something like the inverse of :cfunc:`PyArg_ParseTuple`: it takes a format -string and an arbitrary number of C values, and returns a new Python object. -More info on :cfunc:`Py_BuildValue` is given later. :: +Our :func:`spam.system` function must return the value of :c:data:`sts` as a +Python object. This is done using the function :cfunc:`PyLong_FromLong`. :: - return Py_BuildValue("i", sts); + return PyLong_FromLong(sts); In this case, it will return an integer object. (Yes, even integers are objects on the heap in Python!) @@ -1193,7 +1190,7 @@ The function :cfunc:`spam_system` is modified in a trivial way:: if (!PyArg_ParseTuple(args, "s", &command)) return NULL; sts = PySpam_System(command); - return Py_BuildValue("i", sts); + return PyLong_FromLong(sts); } In the beginning of the module, right after the line :: |