.. highlightlang:: c

Byte Array Objects

.. index:: object: bytearray

.. c:type:: PyByteArrayObject

 This subtype of :c:type:`PyObject` represents a Python bytearray object.

.. c:var:: PyTypeObject PyByteArray_Type

 This instance of :c:type:`PyTypeObject` represents the Python bytearray type;
 it is the same object as :class:`bytearray` in the Python layer.

Type check macros

.. c:function:: int PyByteArray_Check(PyObject *o)

 Return true if the object *o* is a bytearray object or an instance of a
 subtype of the bytearray type.

.. c:function:: int PyByteArray_CheckExact(PyObject *o)

 Return true if the object *o* is a bytearray object, but not an instance of a
 subtype of the bytearray type.

Direct API functions

.. c:function:: PyObject* PyByteArray_FromObject(PyObject *o)

 Return a new bytearray object from any object, *o*, that implements the
 :ref:`buffer protocol <bufferobjects>`.

 .. XXX expand about the buffer protocol, at least somewhere

.. c:function:: PyObject* PyByteArray_FromStringAndSize(const char *string, Py_ssize_t len)

 Create a new bytearray object from *string* and its length, *len*. On
 failure, *NULL* is returned.

.. c:function:: PyObject* PyByteArray_Concat(PyObject *a, PyObject *b)

 Concat bytearrays *a* and *b* and return a new bytearray with the result.

.. c:function:: Py_ssize_t PyByteArray_Size(PyObject *bytearray)

 Return the size of *bytearray* after checking for a *NULL* pointer.

.. c:function:: char* PyByteArray_AsString(PyObject *bytearray)

 Return the contents of *bytearray* as a char array after checking for a
 *NULL* pointer. The returned array always has an extra
 null byte appended.

.. c:function:: int PyByteArray_Resize(PyObject *bytearray, Py_ssize_t len)

 Resize the internal buffer of *bytearray* to *len*.

Macros

These macros trade safety for speed and they don't check pointers.

.. c:function:: char* PyByteArray_AS_STRING(PyObject *bytearray)

 Macro version of :c:func:`PyByteArray_AsString`.

.. c:function:: Py_ssize_t PyByteArray_GET_SIZE(PyObject *bytearray)

 Macro version of :c:func:`PyByteArray_Size`.

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