add missing dependency: dataclasses

[fraenki]

When running the most recent version of opn-cli, the following error message is shown:

$ opn-cli openvpn download 1 1234567890 --hostname vpn.example.com --output json 
Traceback (most recent call last):
  File "/usr/local/bin/opn-cli", line 7, in <module>
    from opnsense_cli.cli import cli
  File "/usr/local/lib/python3.6/site-packages/opnsense_cli/cli.py", line 8, in <module>
    from opnsense_cli.commands.new.api import api as new_api
  File "/usr/local/lib/python3.6/site-packages/opnsense_cli/commands/new/api.py", line 4, in <module>
    from opnsense_cli.facades.code_generator.api import ApiCodeGenerator
  File "/usr/local/lib/python3.6/site-packages/opnsense_cli/facades/code_generator/api.py", line 2, in <module>
    from opnsense_cli.facades.template_engines.base import TemplateEngine
  File "/usr/local/lib/python3.6/site-packages/opnsense_cli/facades/template_engines/base.py", line 2, in <module>
    from dataclasses import dataclass
ModuleNotFoundError: No module named 'dataclasses'

It looks like opn-cli recently introduced a new dependency, that is not specified in the Python package list. After manually installing the dataclasses PIP the error was gone.

(FWIW, I'm preparing another PR, so maybe wait until my 2nd PR before issueing a new release.)

[codecov[bot]]

Codecov Report

Base: 99.92% // Head: 99.92% // No change to project coverage :thumbsup:

Coverage data is based on head (bfda0fb) compared to base (a28c4e4). Patch has no changes to coverable lines.

Additional details and impacted files

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[andreas-stuerz]

Hi Fraenki, Dataclasses are included in Python 3.7. Please Upgrade your Installation or install the dependency manually.

Min. python version for opn-cli is 3.7.

[fraenki]

Oh, that's a pity. :(

Could this requirement be documented somewhere? Maybe in the changelog, or is there a "Python way" to document this...?

[andreas-stuerz]

Good Point.

I will create an issue for that.

thx 😊