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I have a little problem.
I use argparse to parse my arguments, and it's working very well.
To have the args, I do :
p_args = parser.parse_args(argv) args = dict(p_args._get_kwargs()) But the problem with p_args is that I don't know how to get these arguments ordered by their position in the command line, because it's a dict.
So is there any possibility to have the arguments in a tuple/list/ordered dict by their order in the command line?
535
First, we need the argparse package, so we go ahead and import it on Line 2. On Line 5 we instantiate the ArgumentParser object as ap . Then on Lines 6 and 7 we add our only argument, --name . We must specify both shorthand ( -n ) and longhand versions ( --name ) where either flag could be used in the command line.
The store_true option automatically creates a default value of False. Likewise, store_false will default to True when the command-line argument is not present.
The argparse module provides a convenient interface to handle command-line arguments. It displays the generic usage of the program, help, and errors. The parse_args() function of the ArgumentParser class parses arguments and adds value as an attribute dest of the object.
To keep arguments ordered, I use a custom action like this:
import argparse class CustomAction(argparse.Action): def __call__(self, parser, namespace, values, option_string=None): if not 'ordered_args' in namespace: setattr(namespace, 'ordered_args', []) previous = namespace.ordered_args previous.append((self.dest, values)) setattr(namespace, 'ordered_args', previous) parser = argparse.ArgumentParser() parser.add_argument('--test1', action=CustomAction) parser.add_argument('--test2', action=CustomAction) To use it, for example:
>>> parser.parse_args(['--test2', '2', '--test1', '1']) Namespace(ordered_args=[('test2', '2'), ('test1', '1')], test1=None, test2=None) If you love us? You can donate to us via Paypal or buy me a coffee so we can maintain and grow! Thank you!
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