Port, board and/or hardware

Windows

MicroPython version

3.4.0; MicroPython 674a124bbe-dirty on 2026-01-01

Reproduction

from ulab import numpy as np
print(3 < np.array([1,2,3,4]))

Expected behaviour

[False False False True]

Observed behaviour

TypeError: unsupported types for lt: 'int', 'ndarray'

Additional Information

Here're the required changes for the fix:

1. Add to 'mp_binary_op_t' on runtime0.h
   MP_BINARY_OP_REVERSE_LESS,
   MP_BINARY_OP_REVERSE_MORE,
   MP_BINARY_OP_REVERSE_EQUAL,
   MP_BINARY_OP_REVERSE_LESS_EQUAL,
   MP_BINARY_OP_REVERSE_MORE_EQUAL,
   MP_BINARY_OP_REVERSE_NOT_EQUAL,

2. Add the following code:
   if (op >= MP_BINARY_OP_LESS && op <= MP_BINARY_OP_NOT_EQUAL) {
   mp_obj_t t = rhs;
   rhs = lhs;
   lhs = t;
   op += MP_BINARY_OP_REVERSE_LESS - MP_BINARY_OP_LESS;
   goto generic_binary_op;
   } else if (op >= MP_BINARY_OP_OR && op <= MP_BINARY_OP_POWER) {

instead of the line "if (op >= MP_BINARY_OP_OR && op <= MP_BINARY_OP_POWER) {"

After these two changes I get the expected result with no error

Code of Conduct

Yes, I agree