argparsing.py

def main():
    global shared_directory, rhel_version, rhevm_version, workspace, \
        mount_directory_name, tmp_directory_name

    parser = argparse.ArgumentParser(
        description='Retrieve the latest ova image for rhevm appliance')
    parser.add_argument('--shared-dir', nargs='?', default=shared_directory,
                        help='Shared directory where to store the image '
                             '(Default: %s)' % shared_directory)
    parser.add_argument('--rhel-version', nargs='?', default=rhel_version,
                        help='RHEL major release number '
                             '(Default: %s)' % rhel_version)
    parser.add_argument('--rhevm-version', nargs='?', default=rhevm_version,
                        help='RHEVM version '
                             '(Default: %s)' % rhevm_version)
    parser.add_argument('--workspace', nargs='?', default=workspace,
                        help='Workspace '
                             '(Default: %s)' % workspace)
    parser.add_argument('--mount-dir', nargs='?', default=mount_directory_name,
                        help='Mount directory name '
                             '(Default: %s)' % mount_directory_name)
    parser.add_argument('--tmp-dir', nargs='?', default=tmp_directory_name,
                        help='Temporary directory name '
                             '(Default: %s)' % tmp_directory_name)

    args = parser.parse_args()
    shared_directory = args.shared_dir
    rhel_version = args.rhel_version
    rhevm_version = args.rhevm_version
    workspace = args.workspace
    mount_directory_name = args.mount_dir
    tmp_directory_name = args.tmp_dir