AttributeError: module 'serial' has no attribute 'VERSION'

[pacmac]

Just did. fresh install on Debian, but cannot get it to run, any ideas ??

Connecting to /dev/ttyUSB0 (buffer-size 32)...
Traceback (most recent call last):
  File "/usr/local/lib/python3.7/dist-packages/rshell/main.py", line 1282, in connect
    ip_address = socket.gethostbyname(port)
socket.gaierror: [Errno -2] Name or service not known

During handling of the above exception, another exception occurred:

Traceback (most recent call last):
  File "/usr/local/bin/rshell", line 10, in <module>
    sys.exit(main())
  File "/usr/local/lib/python3.7/dist-packages/rshell/command_line.py", line 4, in main
    rshell.main.main()
  File "/usr/local/lib/python3.7/dist-packages/rshell/main.py", line 2913, in main
    real_main()
  File "/usr/local/lib/python3.7/dist-packages/rshell/main.py", line 2875, in real_main
    connect(args.port, baud=args.baud, wait=args.wait, user=args.user, password=args.password)
  File "/usr/local/lib/python3.7/dist-packages/rshell/main.py", line 1288, in connect
    connect_serial(port, baud=baud, wait=wait)
  File "/usr/local/lib/python3.7/dist-packages/rshell/main.py", line 1312, in connect_serial
    dev = DeviceSerial(port, baud, wait)
  File "/usr/local/lib/python3.7/dist-packages/rshell/main.py", line 1554, in __init__
    pyb = Pyboard(port, baudrate=baud, wait=wait, rts=RTS, dtr=DTR)
  File "/usr/local/lib/python3.7/dist-packages/rshell/pyboard.py", line 130, in __init__
    if serial.VERSION == '3.0':
AttributeError: module 'serial' has no attribute 'VERSION'

python
Python 3.7.3 (default, Apr  3 2019, 05:39:12) 
[GCC 8.3.0] on linux
Type "help", "copyright", "credits" or "license" for more information.
>>> import serial
>>> dir(serial)
['__builtins__', '__cached__', '__doc__', '__file__', '__loader__', '__name__', '__package__', '__path__', '__spec__', 'abc', 'absolute_import', 'division', 'errors', 'generators', 'hooks', 'marshal', 'meta', 'model', 'nested_scopes', 'print_function', 'properties', 'request', 'test', 'unicode_literals', 'utilities', 'with_statement']
>>> 

[davehylands]

It sounds like you have an old version of pyserial.

I would start by trying:

python3 -m pip install --upgrade pyserial

You'll probably also need to add sudo

[electricWah]

I am getting this exact same error, with all the newest versions of everything. After running pip install --upgrade rshell:

Requirement already satisfied: rshell in ./Library/Python/3.8/lib/python/site-packages (0.0.31)
Requirement already satisfied: pyudev>=0.16 in ./Library/Python/3.8/lib/python/site-packages (from rshell) (0.23.2)
Requirement already satisfied: pyserial in ./Library/Python/3.8/lib/python/site-packages (from rshell) (3.5)
Requirement already satisfied: six in /Library/Developer/CommandLineTools/Library/Frameworks/Python3.framework/Versions/3.8/lib/python3.8/site-packages (from pyudev>=0.16->rshell) (1.15.0)

[krishnak]

sudo pip3 install --ignore-installed -U pyserial

Run this command to get it resolved