En Mon, 16 Nov 2009 07:44:34 -0300, lallous <[email protected]> escribió:
Actually, the object class is defined as:
class __object(object):
def __getitem__(self, idx):
return getattr(self, idx)
Anyway, now I check like this:
bool PyIsSequenceType(PyObject *obj)
{
if (!PySequence_Check(obj))
return false;
Py_ssize_t sz = PySequence_Size(obj);
if (sz == -1 || PyErr_Occurred() != NULL)
{
PyErr_Clear();
return false;
}
return true;
}
I don't like it, any other suggestions?
Yes: find another name for the "thing" you're checking for. It's not the
same as a "sequence" in the Python sense.
Perhaps you want to consider your type a mapping? Sequences and mappings
have a lot in common (mappings have length too.) In C you have separate
slots tp_as_sequence, tp_as_mapping; but in Python code, __getitem__ is
used for both meanings (and goes into both set of pointers.) tp_as_mapping
takes precedence over tp_as_sequence.
--
Gabriel Genellina
--
http://mail.python.org/mailman/listinfo/python-list
