Byte Array Objects - Python 2.7.18 documentation 编辑

New in version 2.6.

PyByteArrayObject

This subtype of PyObject represents a Python bytearray object.

PyTypeObject PyByteArray_Type

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

Type check macros

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.

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

PyObject* PyByteArray_FromObject(PyObject *o)

Return a new bytearray object from any object, o, that implements the buffer protocol.

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.

PyObject* PyByteArray_Concat(PyObject *a, PyObject *b)

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

Py_ssize_t PyByteArray_Size(PyObject *bytearray)

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

char* PyByteArray_AsString(PyObject *bytearray)

Return the contents of bytearray as a char array after checking for a NULL pointer.

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.

char* PyByteArray_AS_STRING(PyObject *bytearray)

Macro version of PyByteArray_AsString().

Py_ssize_t PyByteArray_GET_SIZE(PyObject *bytearray)

Macro version of PyByteArray_Size().