Thanks, only tried -v. I guess it's then related to bytes.hex throwing an error - and I replaced it with binascii.hexlify - I can't find the documentation to bytes.hex.
To solvers: b'4f8d976e1283c0caa145b6f3fdd478e9263108ac1c5a643bdf4f8d976e128300' 9732eb5b92ca5bdbb150 b'04000000455f40ac14ec9f6bad6cc8d5de2714ea84be396203d45e710745605e01000000f963ea196bb8cb2260a2825beca315b6d1e6608d8696338e26b75f8b1a4f93da0000000000000000000000000000000000000000000000000000000000000000fc4e1c58940d041d' b'6493d02292'
From solver 0.0: banner "SILENTARMY mining mode ready"
From solver 0.0: strange: more than 1 line was read
These messages are normal & expected.
bytes.hex() is built into Python 3. If you don't have bytes.hex() it sounds like you are trying to run it under Python 2 which is not going to work (doesn't have asyncio, etc)