How to convert command line code to simple code?

Question

So, I am trying to pass a code to main(), the original code is command line based (It takes arguments from command line interface) but I want to pass it to main() directly in program. Here is the original code.

if __name__ == '__main__':
    log_fmt = '%(asctime)s - %(name)s - %(levelname)s - %(message)s'
    logging.basicConfig(level=logging.INFO, format=log_fmt)

    parser = argparse.ArgumentParser()
    parser.add_argument('json_in')
    parser.add_argument('graph_out')
    parser.add_argument('text_out')
    parser.add_argument('spm_model')
    parser.add_argument('--sequence', action='store_true')
    parser.add_argument('--simple-preprocessing',
                        action='store_false', dest='extended_preprocessing')
    parser.add_argument('--bpe-dropout', type=float, default=None)
    parser.add_argument('--sample-factor', type=int, default=1)

    args = parser.parse_args()
    main(args)

Now I understand how to convert each line except 11th one, line including the --sequence.

I don't understand what to pass for dest in program.

I am actually working on colab and it throws as error SystemExit: 2 with argparse, thats why I dont want to use it anyway.

Cor · Accepted Answer · 2021-08-04 05:54:55Z

1

The flags with a - prefix, are accessed by removing the - prefix and making the non-prefix - underscores _, if there is no dest defined.

parser.add_argument('--sequence', action='store_true')
parser.add_argument('--simple-preprocessing',
                    action='store_false', dest='extended_preprocessing')
parser.add_argument('--bpe-dropout', type=float, default=None)
parser.add_argument('--sample-factor', type=int, default=1)

args = parser.parse_args()

args.sequence 
args.extended_preprocessing     # use dest
args.bpe_dropout
args.sample_factory

answered Aug 4, 2021 at 5:54

Cor

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2 Comments

Abdul Ahad Over a year ago

Thanks and I appreciate your quick answer, but the problem is I dont want to use arguments(args). Like I want to use pass these values in main directly!! as an example: json_in = 'link to file' I am trying to run this code on Colab actually.

Cor Over a year ago

you could make an object that works the same as the args object and use that instead, but maybe rewriting the signature to main makes more sense. ``` from dataclasses import dataclass @dataclass class Args: sequence = False extended_preprocessing = False bpe_dropout = None sample_factor = 1 args = Args(sequence=True, sample_factor = 3) main(args) ``` but maybe you want to rewrite main to take the arguments separately. ``` def main(sequence: bool, extend_preprocessing: bool, bpe_dropout: float, sample_factor: int) - > None: .... ```

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