[New-bugs-announce] [issue10803] ctypes: better support of bytearray objects

Markus F.X.J. Oberhumer report at bugs.python.org
Sun Jan 2 07:59:06 CET 2011


New submission from Markus F.X.J. Oberhumer <markus at oberhumer.com>:

Python 3.2b2 does not properly support accessing bytearrays from
ctypes, which makes dealing with large buffers somewhat unpleasant.

A very first fix - a simple patch for the z_set() function - is given here.


build/Python-3.2b2 $ quilt diff
Index: b/Modules/_ctypes/cfield.c
===================================================================
--- a/Modules/_ctypes/cfield.c
+++ b/Modules/_ctypes/cfield.c
@@ -1363,6 +1363,10 @@
         *(char **)ptr = PyBytes_AsString(value);
         Py_INCREF(value);
         return value;
+    } else if (PyByteArray_Check(value)) {
+        *(char **)ptr = PyByteArray_AsString(value);
+        Py_INCREF(value);
+        return value;
     } else if (PyLong_Check(value)) {
 #if SIZEOF_VOID_P == SIZEOF_LONG_LONG
         *(char **)ptr = (char *)PyLong_AsUnsignedLongLongMask(value);

----------
assignee: theller
components: ctypes
messages: 125032
nosy: mfxmfx, theller
priority: normal
severity: normal
status: open
title: ctypes: better support of bytearray objects
type: feature request
versions: Python 3.2

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Python tracker <report at bugs.python.org>
<http://bugs.python.org/issue10803>
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