FM / c-api

/usr/share/doc/python3-docs/html/_sources/c-api/

/usr/share/doc/python3-docs/html/_sources/c-api

Name	Size	Mode	Actions
abstract.rst.txt	715	0644	edit dl rm
allocation.rst.txt	2653	0644	edit dl rm
apiabiversion.rst.txt	2242	0644	edit dl rm
arg.rst.txt	30651	0644	edit dl rm
bool.rst.txt	1200	0644	edit dl rm
buffer.rst.txt	22267	0644	edit dl rm
bytearray.rst.txt	2250	0644	edit dl rm
bytes.rst.txt	9211	0644	edit dl rm
capsule.rst.txt	5741	0644	edit dl rm
cell.rst.txt	1940	0644	edit dl rm
code.rst.txt	1666	0644	edit dl rm
codec.rst.txt	4799	0644	edit dl rm
complex.rst.txt	3946	0644	edit dl rm
concrete.rst.txt	2046	0644	edit dl rm
conversion.rst.txt	5516	0644	edit dl rm
coro.rst.txt	820	0644	edit dl rm
datetime.rst.txt	6415	0644	edit dl rm
descriptor.rst.txt	1111	0644	edit dl rm
dict.rst.txt	7952	0644	edit dl rm
exceptions.rst.txt	47814	0644	edit dl rm
file.rst.txt	3248	0644	edit dl rm
float.rst.txt	2243	0644	edit dl rm
function.rst.txt	3348	0644	edit dl rm
gcsupport.rst.txt	6057	0644	edit dl rm
gen.rst.txt	1301	0644	edit dl rm
import.rst.txt	12825	0644	edit dl rm
index.rst.txt	613	0644	edit dl rm
init.rst.txt	52383	0644	edit dl rm
intro.rst.txt	28751	0644	edit dl rm
iter.rst.txt	1129	0644	edit dl rm
iterator.rst.txt	1640	0644	edit dl rm
list.rst.txt	4735	0644	edit dl rm
long.rst.txt	10436	0644	edit dl rm
mapping.rst.txt	2871	0644	edit dl rm
marshal.rst.txt	3561	0644	edit dl rm
memory.rst.txt	21369	0644	edit dl rm
memoryview.rst.txt	2348	0644	edit dl rm
method.rst.txt	2818	0644	edit dl rm
module.rst.txt	18266	0644	edit dl rm
none.rst.txt	740	0644	edit dl rm
number.rst.txt	10583	0644	edit dl rm
objbuffer.rst.txt	2198	0644	edit dl rm
object.rst.txt	17420	0644	edit dl rm
objimpl.rst.txt	304	0644	edit dl rm
refcounting.rst.txt	2909	0644	edit dl rm
reflection.rst.txt	1417	0644	edit dl rm
sequence.rst.txt	6547	0644	edit dl rm
set.rst.txt	6144	0644	edit dl rm
slice.rst.txt	2404	0644	edit dl rm
stable.rst.txt	1969	0644	edit dl rm
structures.rst.txt	13787	0644	edit dl rm
sys.rst.txt	9944	0644	edit dl rm
tuple.rst.txt	8031	0644	edit dl rm
type.rst.txt	3963	0644	edit dl rm
typeobj.rst.txt	60184	0644	edit dl rm
unicode.rst.txt	68074	0644	edit dl rm
utilities.rst.txt	414	0644	edit dl rm
veryhigh.rst.txt	16655	0644	edit dl rm
weakref.rst.txt	2635	0644	edit dl rm

Edit: /usr/share/doc/python3-docs/html/_sources/c-api/allocation.rst.txt (2653B)

.. highlightlang:: c

.. _allocating-objects:

Allocating Objects on the Heap
==============================

.. c:function:: PyObject* _PyObject_New(PyTypeObject *type)

.. c:function:: PyVarObject* _PyObject_NewVar(PyTypeObject *type, Py_ssize_t size)

.. c:function:: PyObject* PyObject_Init(PyObject *op, PyTypeObject *type)

Initialize a newly-allocated object *op* with its type and initial
   reference.  Returns the initialized object.  If *type* indicates that the
   object participates in the cyclic garbage detector, it is added to the
   detector's set of observed objects. Other fields of the object are not
   affected.

.. c:function:: PyVarObject* PyObject_InitVar(PyVarObject *op, PyTypeObject *type, Py_ssize_t size)

This does everything :c:func:`PyObject_Init` does, and also initializes the
   length information for a variable-size object.

.. c:function:: TYPE* PyObject_New(TYPE, PyTypeObject *type)

Allocate a new Python object using the C structure type *TYPE* and the
   Python type object *type*.  Fields not defined by the Python object header
   are not initialized; the object's reference count will be one.  The size of
   the memory allocation is determined from the :c:member:`~PyTypeObject.tp_basicsize` field of
   the type object.

.. c:function:: TYPE* PyObject_NewVar(TYPE, PyTypeObject *type, Py_ssize_t size)

Allocate a new Python object using the C structure type *TYPE* and the
   Python type object *type*.  Fields not defined by the Python object header
   are not initialized.  The allocated memory allows for the *TYPE* structure
   plus *size* fields of the size given by the :c:member:`~PyTypeObject.tp_itemsize` field of
   *type*.  This is useful for implementing objects like tuples, which are
   able to determine their size at construction time.  Embedding the array of
   fields into the same allocation decreases the number of allocations,
   improving the memory management efficiency.

.. c:function:: void PyObject_Del(PyObject *op)

Releases memory allocated to an object using :c:func:`PyObject_New` or
   :c:func:`PyObject_NewVar`.  This is normally called from the
   :c:member:`~PyTypeObject.tp_dealloc` handler specified in the object's type.  The fields of
   the object should not be accessed after this call as the memory is no
   longer a valid Python object.

.. c:var:: PyObject _Py_NoneStruct

Object which is visible in Python as ``None``.  This should only be accessed
   using the :c:macro:`Py_None` macro, which evaluates to a pointer to this
   object.

.. seealso::

:c:func:`PyModule_Create`
      To allocate and create extension modules.

cmd: