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Top Links: >> 80. Technology >> Internet Technology Summit Program >> 9. AI with Python >> 9.1. The Python Tutorial Introduction >> 9.1.1. Python Docs, Lexicon, and Components >> 9.1.1.3. Python Internals
Current Topic: 9.1.1.3.19. Byte Array Objects
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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 value: New reference.

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






PyObject*
PyByteArray_FromStringAndSize
(const char
 *string, Py_ssize_t
 len
)



Return value: New reference.

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






PyObject*
PyByteArray_Concat
(
PyObject
 *a,
Was it clear so far?

PyObject
 *b
)



Return value: New reference.

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. The returned array always has an extra null byte appended.






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().









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