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author | Benjamin Peterson <benjamin@python.org> | 2009-08-26 07:38:00 (GMT) |
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committer | Benjamin Peterson <benjamin@python.org> | 2009-08-26 07:38:00 (GMT) |
commit | 122caa0f27364ae2fd225417792f8c00dc4524c5 (patch) | |
tree | 79fa0c950ecee7f89873a37534ca0928b5f1ac20 /Doc/c-api/buffer.rst | |
parent | b08c3a818eb6f2fef3ce86c8ba8ae99bbe0be6c3 (diff) | |
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Merged revisions 74551 via svnmerge from
svn+ssh://pythondev@svn.python.org/python/branches/py3k
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r74551 | benjamin.peterson | 2009-08-26 09:35:45 +0200 (Wed, 26 Aug 2009) | 1 line
the old buffer object doesn't exist in Python 3 #6659
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Diffstat (limited to 'Doc/c-api/buffer.rst')
-rw-r--r-- | Doc/c-api/buffer.rst | 20 |
1 files changed, 15 insertions, 5 deletions
diff --git a/Doc/c-api/buffer.rst b/Doc/c-api/buffer.rst index 97adb07..ec44a99 100644 --- a/Doc/c-api/buffer.rst +++ b/Doc/c-api/buffer.rst @@ -10,7 +10,6 @@ Buffer Objects .. index:: - object: buffer single: buffer interface Python objects implemented in C can export a "buffer interface." These @@ -297,14 +296,25 @@ Buffer related functions length. Return 0 on success and -1 (with raising an error) on error. +.. index:: + object: memoryview + + MemoryView objects ================== -A memoryview object is an extended buffer object that could replace the buffer -object (but doesn't have to as that could be kept as a simple 1-d memoryview -object). It, unlike :ctype:`Py_buffer`, is a Python object (exposed as -:class:`memoryview` in :mod:`builtins`), so it can be used with Python code. +A memoryview object exposes the C level buffer interface to Python. + .. cfunction:: PyObject* PyMemoryView_FromObject(PyObject *obj) Return a memoryview object from an object that defines the buffer interface. + + +.. cfunction:: PyObject * PyMemoryView_GetContiguous(PyObject *obj, int buffertype, char order) + + Return a memoryview object to a contiguous chunk of memory (in either + 'C' or 'F'ortran order) from an object that defines the buffer + interface. If memory is contiguous, the memoryview object points to the + original memory. Otherwise copy is made and the memoryview points to a + new bytes object. |