a38tool: fails with "unexpected keyword argument 'required'" about python-a38

[spanezz]

This has become something not so relevant to a38's code and more relevant to assistance with local system setup. At a38 level, I cannot do much more than documenting the requirements.

I'm closing the ticket

[spanezz]

It looks like you're using an old version of Python3 that a38 is not supporting: the required argument to add_subparsers has been added in Python 3.7:

required - Whether or not a subcommand must be provided, by default False (added in 3.7)

Note that Python 3.6 is end-of-life as of 2021-12-23.

[angus73]

Many thanks, I had Python 3.6 indeed.
Now I have just installed Python 3.7 using the deadsnakes PPA (as described here, but the problem is still there. More info:

$ python --version
Python 2.7.17

$ python3.7 --version
Python 3.7.12

I can guess there is some kind of binding to do, I tried to alias "python" to "python3.7" but still doesn't work, so (obviously), as I am not an expert, I think I would need some more help. Let me know if you can kindly help me, or maybe where I can ask.

Many thanks, again
(running Ubuntu 18.04)

---edit---
I tried to setup update-alternatives according to this page, but still doesn't work, although at the moment I have

$ python --version
Python 3.7.12

[spanezz]

Hello. The only thing I can think of is to replace the first line of a38tool to point to python3.7 instead of python3

[angus73]

Thank you!
Did it, and it seems something is movin' on, but now:

$ a38tool --help
Traceback (most recent call last):
File "/home/andrea/.local/bin/a38tool", line 9, in
import a38.fattura as a38
ModuleNotFoundError: No module named 'a38'

My previous step was "pip3 install a38", was it correct or is there a better way?

Thanks again