amplify-education / metargs

Library that allows programs to take arguments on the command line and through a configuration file and integrate them

Metargs

Metargs is a library that aims to combine the functionality of argparse for defining commandline arguments and options with that of ConfigParser for reading data from configuration files.

Usage

Example:

from metargs import ConfigBackedArgumentParser, Option

parser = ConfigBackedArgumentParser('/etc/foo.conf')
parser.extend_options(
    Option('config:only', help='Read the 'only' configuration value from the '
        'section [config]. Leave it as a string. Default to None),
    Option('config:option', '-o', '--option',
        help='Add an optional value that reads from [config] 'option', but also '
             'from the --option command line argument'),
    Option('argument', help='A command line only argument')
)

args = parser.parse_args()
print args.config_only
print args.option
print args.argument

The Option class is designed to take all of the same arguments as argparse.ArgumentParser.add_argument. It will interpret any arguments that contain ':' as <section>:<key> values to read from the configuration file.