py: Make showbc decode UNPACK_EX, and use correct range for unop/binop.

py/showbc.c

@@ -426,6 +426,11 @@ const byte *mp_bytecode_print_str(const byte *ip) {
             printf("UNPACK_SEQUENCE " UINT_FMT, unum);
             break;
 
+        case MP_BC_UNPACK_EX:
+            DECODE_UINT;
+            printf("UNPACK_EX " UINT_FMT, unum);
+            break;
+
         case MP_BC_MAKE_FUNCTION:
             DECODE_PTR;
             printf("MAKE_FUNCTION %p", (void*)unum);
@@ -508,9 +513,9 @@ const byte *mp_bytecode_print_str(const byte *ip) {
                 printf("LOAD_FAST " UINT_FMT, (mp_uint_t)ip[-1] - MP_BC_LOAD_FAST_MULTI);
             } else if (ip[-1] < MP_BC_STORE_FAST_MULTI + 16) {
                 printf("STORE_FAST " UINT_FMT, (mp_uint_t)ip[-1] - MP_BC_STORE_FAST_MULTI);
-            } else if (ip[-1] < MP_BC_UNARY_OP_MULTI + 5) {
+            } else if (ip[-1] < MP_BC_UNARY_OP_MULTI + 6) {
                 printf("UNARY_OP " UINT_FMT, (mp_uint_t)ip[-1] - MP_BC_UNARY_OP_MULTI);
-            } else if (ip[-1] < MP_BC_BINARY_OP_MULTI + 35) {
+            } else if (ip[-1] < MP_BC_BINARY_OP_MULTI + 36) {
                 mp_uint_t op = ip[-1] - MP_BC_BINARY_OP_MULTI;
                 printf("BINARY_OP " UINT_FMT " %s", op, qstr_str(mp_binary_op_method_name[op]));
             } else {