diff options
Diffstat (limited to 'Doc/c-api/gcsupport.rst')
| -rw-r--r-- | Doc/c-api/gcsupport.rst | 8 |
1 files changed, 4 insertions, 4 deletions
diff --git a/Doc/c-api/gcsupport.rst b/Doc/c-api/gcsupport.rst index b3f30b2..924a7fd 100644 --- a/Doc/c-api/gcsupport.rst +++ b/Doc/c-api/gcsupport.rst @@ -49,7 +49,7 @@ Constructors for container types must conform to two rules: .. c:function:: TYPE* PyObject_GC_Resize(TYPE, PyVarObject *op, Py_ssize_t newsize) Resize an object allocated by :c:func:`PyObject_NewVar`. Returns the - resized object or *NULL* on failure. *op* must not be tracked by the collector yet. + resized object or ``NULL`` on failure. *op* must not be tracked by the collector yet. .. c:function:: void PyObject_GC_Track(PyObject *op) @@ -110,7 +110,7 @@ The :c:member:`~PyTypeObject.tp_traverse` handler must have the following type: Traversal function for a container object. Implementations must call the *visit* function for each object directly contained by *self*, with the parameters to *visit* being the contained object and the *arg* value passed - to the handler. The *visit* function must not be called with a *NULL* + to the handler. The *visit* function must not be called with a ``NULL`` object argument. If *visit* returns a non-zero value that value should be returned immediately. @@ -121,7 +121,7 @@ must name its arguments exactly *visit* and *arg*: .. c:function:: void Py_VISIT(PyObject *o) - If *o* is not *NULL*, call the *visit* callback, with arguments *o* + If *o* is not ``NULL``, call the *visit* callback, with arguments *o* and *arg*. If *visit* returns a non-zero value, then return it. Using this macro, :c:member:`~PyTypeObject.tp_traverse` handlers look like:: @@ -134,7 +134,7 @@ must name its arguments exactly *visit* and *arg*: return 0; } -The :c:member:`~PyTypeObject.tp_clear` handler must be of the :c:type:`inquiry` type, or *NULL* +The :c:member:`~PyTypeObject.tp_clear` handler must be of the :c:type:`inquiry` type, or ``NULL`` if the object is immutable. |