Traceback (most recent call last):


 "<stdin>", line 1, in <module>


 "<stdin>", line 3, in bar
AttributeError: 'Foo' object has no attribute '_barr'

Traceback (most recent call last):


 "esptool.py", line 2606, in <module>

_main()


 "esptool.py", line 2599, in _main

main()


 "esptool.py", line 2320, in main

esp = ESPLoader.detect_chip(args.port, initial_baud, args.before, args.trace)


 "esptool.py", line 223, in detect_chip

detect_port = ESPLoader(port, baud, trace_enabled=trace_enabled)


 "esptool.py", line 197, in __init__

self._slip_reader = slip_reader(self._port, self.trace)
AttributeError: 'ESPLoader' object has no attribute '_port'`
