if (PyTuple_GET_SIZE(arg) == 1)
arg = PyTuple_GET_ITEM(arg, 0);
if (PyTuple_GET_SIZE(arg) == 1)
arg = PyTuple_GET_ITEM(arg, 0);
if (!PySequence_Check(arg)) TYERR("not a sequence");
n = PySequence_Size(arg); if (n < 0) goto end;
if (!n) { z = id(me); goto end; }
if (!PySequence_Check(arg)) TYERR("not a sequence");
n = PySequence_Size(arg); if (n < 0) goto end;
if (!n) { z = id(me); goto end; }