error in eval_model

[yoshitomo-matsubara]

Hello,
Could you please provide the exact commands to replicate the curves using the pretrained models in compressai?

Using the pretrained models in compressai, I wanted to replicate the RD curves shown in the README.md

I tried python -m compressai.utils.eval_model -h and python -m compressai.utils.eval_model --help to see how to execute, but it returned the following error.

Traceback (most recent call last):
  File "/usr/lib/python3.6/runpy.py", line 193, in _run_module_as_main
    "__main__", mod_spec)
  File "/usr/lib/python3.6/runpy.py", line 85, in _run_code
    exec(code, run_globals)
  File "/home/yoshitom/.local/share/virtualenvs/compressai-doaxpoXd/lib/python3.6/site-packages/compressai/utils/eval_model/__main__.py", line 303, in <module>
    main(sys.argv[1:])
  File "/home/yoshitom/.local/share/virtualenvs/compressai-doaxpoXd/lib/python3.6/site-packages/compressai/utils/eval_model/__main__.py", line 254, in main
    args = setup_args().parse_args(argv)
  File "/home/yoshitom/.local/share/virtualenvs/compressai-doaxpoXd/lib/python3.6/site-packages/compressai/utils/eval_model/__main__.py", line 217, in setup_args
    help="model source", dest="source", required=True
  File "/usr/lib/python3.6/argparse.py", line 1716, in add_subparsers
    action = parsers_class(option_strings=[], **kwargs)
TypeError: __init__() got an unexpected keyword argument 'required'

OS: Ubuntu 20
Python: 3.6.9
compressai: 1.1.2

Thank you!

[jbegaint]

Hi, it's probably an error with your python version and the argparse api.

[yoshitomo-matsubara]

Hi @jbegaint
Thanks for the answer. Yes, it worked with Python 3.8.5.

I thought it should work with Python 3.6.9 as the README says

CompressAI supports python 3.6+ and PyTorch 1.4+.

Can you make it compatible with Python 3.6 until compressai ends supporting Python 3.6?

[jbegaint]

Hi @yoshitomo-matsubara , this should be fixed in the latest release.

[yoshitomo-matsubara]

Hi @jbegaint,

Having updated compressai version (v1.1.3), I confirmed that it works with Python 3.6.9.
Thank you for fixing it!