py: Change MP_UNARY_OP_INT to MP_UNARY_OP_INT_MAYBE.

To be consistent with MP_UNARY_OP_INT_FLOAT and MP_UNARY_OP_INT_COMPLEX,
and allow int() to first check if a type supports __int__ before trying
other things (as per CPython).

Signed-off-by: Damien George <damien@micropython.org>

1 files changed, 2 insertions, 0 deletions

diff --git a/py/objint_mpz.c b/py/objint_mpz.c
index e9545149f..8078441d6 100644
--- a/py/objint_mpz.c
+++ b/py/objint_mpz.c
@@ -165,6 +165,8 @@ mp_obj_t mp_obj_int_unary_op(mp_unary_op_t op, mp_obj_t o_in) {
             mpz_abs_inpl(&self2->mpz, &self->mpz);
             return MP_OBJ_FROM_PTR(self2);
         }
+        case MP_UNARY_OP_INT_MAYBE:
+            return o_in;
         default:
             return MP_OBJ_NULL;      // op not supported
     }