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ActivePython 2.5 documentation
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Python/C API Reference Manual |
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6.6 Buffer Protocol
| int PyObject_AsCharBuffer( | PyObject *obj,
const char **buffer,
Py_ssize_t *buffer_len) |
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Returns a pointer to a read-only memory location useable as character-
based input. The obj argument must support the single-segment
character buffer interface. On success, returns
0, sets
buffer to the memory location and buffer_len to the buffer
length. Returns -1 and sets a TypeError on error.
New in version 1.6.
| int PyObject_AsReadBuffer( | PyObject *obj,
const void **buffer,
Py_ssize_t *buffer_len) |
-
Returns a pointer to a read-only memory location containing
arbitrary data. The obj argument must support the
single-segment readable buffer interface. On success, returns
0, sets buffer to the memory location and buffer_len
to the buffer length. Returns -1 and sets a
TypeError on error.
New in version 1.6.
| int PyObject_CheckReadBuffer( | PyObject *o) |
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Returns
1 if o supports the single-segment readable
buffer interface. Otherwise returns 0.
New in version 2.2.
| int PyObject_AsWriteBuffer( | PyObject *obj,
void **buffer,
Py_ssize_t *buffer_len) |
-
Returns a pointer to a writeable memory location. The obj
argument must support the single-segment, character buffer
interface. On success, returns
0, sets buffer to the
memory location and buffer_len to the buffer length. Returns
-1 and sets a TypeError on error.
New in version 1.6.
Release 2.5.2, documentation updated on 21th February, 2008.
See About this document... for information on suggesting changes.
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