To test the Pybytes library API, connect your device to Pymakr and call the methods listed below. You can use the Pybytes library API in your MicroPython project.
Enable debugging if you are having any issues. There are multiple debug levels, the lowest is 0 which is for warnings only and 99 is the highest used and will print more debugging messages
>> import pycom; >> pycom.nvs_set('pybytes_debug', debugLevel)
>> import pycom; >> pycom.nvs_set('pybytes_debug', 99)