if ((x = PySequence_GetItem(q, i)) == 0) goto end;
xx = getmp(x); Py_DECREF(x); if (!xx) goto end;
if (MP_CMP(xx, <=, MP_ZERO)) VALERR("moduli must be positive");
if ((x = PySequence_GetItem(q, i)) == 0) goto end;
xx = getmp(x); Py_DECREF(x); if (!xx) goto end;
if (MP_CMP(xx, <=, MP_ZERO)) VALERR("moduli must be positive");