New submission from Paul Sokolovsky <[email protected]>:
sqlite.Row class doesn't implement sequence protocol, which is rather
unfortunate, because it is described and expected to work like a tuple, with
extra mapping-like functionality.
Specific issue I hit:
Adding rows to PyGTK ListStore,
model = gtk.ListStore(*db.getSchema())
for r in listGen():
model.append(r)
I get:
TypeError: expecting a sequence
Looking at PyGTK sources, append() method uses PySequence Check() on the
argument. Looking at Python 2.6.5 abstract.c:
int
PySequence_Check(PyObject *s)
{
if (s && PyInstance_Check(s))
return PyObject_HasAttrString(s, "__getitem__");
if (PyObject_IsInstance(s, (PyObject *)&PyDict_Type))
return 0;
return s != NULL && s->ob_type->tp_as_sequence &&
s->ob_type->tp_as_sequence->sq_item != NULL;
}
And sqlite3.Row doesn't set ob_type->tp_as_sequence as of Py 2.6.5 or 2.7.
----------
components: Library (Lib)
messages: 119639
nosy: pfalcon
priority: normal
severity: normal
status: open
title: sqlite3.Row doesn't support sequence protocol
type: behavior
versions: Python 2.6
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Python tracker <[email protected]>
<http://bugs.python.org/issue10203>
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