Using bytes.hex instead of binascii.hexlify

[mapio]

To convert from bytes to an hex string the bytes.hex method is much faster than str(hexlify(…).decode('uft-8')).

Consider this rough test:

$ python3 -m timeit "b'\x00\x00\x00\x00\x00\x19\xd6h\x9c\x08Z\xe1e\x83\x1e\x93O\xf7c\xaeF\xa2\xa6\xc1r\xb3\xf1\xb6\n\x8c\xe2o'.hex()"
5000000 loops, best of 5: 72.3 nsec per loop
$ python3 -m timeit -s "from binascii import hexlify" "hexlify(b'\x00\x00\x00\x00\x00\x19\xd6h\x9c\x08Z\xe1e\x83\x1e\x93O\xf7c\xaeF\xa2\xa6\xc1r\xb3\xf1\xb6\n\x8c\xe2o').decode('utf-8')"
2000000 loops, best of 5: 137 nsec per loop
$ python3 -m timeit -s "from binascii import hexlify" "str(hexlify(b'\x00\x00\x00\x00\x00\x19\xd6h\x9c\x08Z\xe1e\x83\x1e\x93O\xf7c\xaeF\xa2\xa6\xc1r\xb3\xf1\xb6\n\x8c\xe2o').decode('utf-8'))"
2000000 loops, best of 5: 194 nsec per loop

The documentation also reports that bytes.hex is a convenient way of doing what you need.

[alecalve]

Nice, you can also remove the import since it's not used anymore

[mapio]

Sorry, I missed it. Now it is done.