Custom Hamiltonian failure about netket HOT 1 CLOSED

def encode_complex(z):
    if isinstance(z, complex):
        return (z.real, z.imag)
    else:
        type_name = z.__class__.__name__
        raise TypeError(
            f"Object of type '{type_name}' is not JSON serializable")

json_file = "input.json"
with open(json_file, 'w') as outfile:
    json.dump(pars, outfile, default=encode_complex)