Python argparse.ArgumentError() Examples

def parse_int(self, value):
        # Support suffixes
        multiplier = 1
        m = re.search("(.*)(Mb|mb|kb|m|M|k|g|G|Gb)", value)
        if m:
            value = m.group(1)
            suffix = m.group(2).lower()
            if suffix in ("gb", "g"):
                multiplier = 1024 * 1024 * 1024
            elif suffix in ("mb", "m"):
                multiplier = 1024 * 1024
            elif suffix in ("kb", "k"):
                multiplier = 1024

        try:
            if value.startswith("0x"):
                value = int(value, 16) * multiplier
            else:
                value = int(value) * multiplier
        except ValueError:
            raise argparse.ArgumentError(self, "Invalid integer value")

        return value 

def MakeBasemapDirectory(this_dir):
    # check if a raster directory exists. If not then make it.
    basemap_directory = this_dir+'basemap_plots/'
    print("I am printing to a raster directory:")
    print(basemap_directory)
    if not os.path.isdir(basemap_directory):
        os.makedirs(basemap_directory)    

#=============================================================================
# The normal float parsing doesn't work if on of the floats is 
# negative so I need to do this malarky -- SMM 2/03/2019
# see
# https://stackoverflow.com/questions/9025204/python-argparse-issue-with-optional-arguments-which-are-negative-numbers
#=============================================================================  
#def two_floats(value):
#    values = value.split()
#    if len(values) != 2:
#        raise argparse.ArgumentError
#    values = map(float, values)
#    return values       
        
#=============================================================================
# This parses a comma separated string
#============================================================================= 

def __call__(self, parser, namespace, values, option_string=None):
        try:
            value = {
                '2m': '256KB',
                '4m': '512KB',
                '8m': '1MB',
                '16m': '2MB',
                '32m': '4MB',
                '16m-c1': '2MB-c1',
                '32m-c1': '4MB-c1',
            }[values[0]]
            print("WARNING: Flash size arguments in megabits like '%s' are deprecated." % (values[0]))
            print("Please use the equivalent size '%s'." % (value))
            print("Megabit arguments may be removed in a future release.")
        except KeyError:
            value = values[0]

        known_sizes = dict(ESP8266ROM.FLASH_SIZES)
        known_sizes.update(ESP32ROM.FLASH_SIZES)
        if self._auto_detect:
            known_sizes['detect'] = 'detect'
        if value not in known_sizes:
            raise argparse.ArgumentError(self, '%s is not a known flash size. Known sizes: %s' % (value, ", ".join(known_sizes.keys())))
        setattr(namespace, self.dest, value) 

def __call__(self, parser, namespace, value, option_string=None):
        if value.upper() == "SPI":
            value = 0
        elif value.upper() == "HSPI":
            value = 1
        elif "," in value:
            values = value.split(",")
            if len(values) != 5:
                raise argparse.ArgumentError(self, '%s is not a valid list of comma-separate pin numbers. Must be 5 numbers - CLK,Q,D,HD,CS.' % value)
            try:
                values = tuple(int(v,0) for v in values)
            except ValueError:
                raise argparse.ArgumentError(self, '%s is not a valid argument. All pins must be numeric values' % values)
            if any([v for v in values if v > 33 or v < 0]):
                raise argparse.ArgumentError(self, 'Pin numbers must be in the range 0-33.')
            # encode the pin numbers as a 32-bit integer with packed 6-bit values, the same way ESP32 ROM takes them
            # TODO: make this less ESP32 ROM specific somehow...
            clk,q,d,hd,cs = values
            value = (hd << 24) | (cs << 18) | (d << 12) | (q << 6) | clk
        else:
            raise argparse.ArgumentError(self, '%s is not a valid spi-connection value. ' +
                                         'Values are SPI, HSPI, or a sequence of 5 pin numbers CLK,Q,D,HD,CS).' % value)
        setattr(namespace, self.dest, value) 

def __call__(self, parser, namespace, values, option_string=None):
        # validate pair arguments
        pairs = []
        for i in range(0,len(values),2):
            try:
                address = int(values[i],0)
            except ValueError as e:
                raise argparse.ArgumentError(self,'Address "%s" must be a number' % values[i])
            try:
                argfile = open(values[i + 1], 'rb')
            except IOError as e:
                raise argparse.ArgumentError(self, e)
            except IndexError:
                raise argparse.ArgumentError(self,'Must be pairs of an address and the binary filename to write there')
            pairs.append((address, argfile))
        setattr(namespace, self.dest, pairs)


# This is "wrapped" stub_flasher.c, to  be loaded using run_stub. 

def cli():
    try:
        parser = get_parser(all_commands())
        unknown = None
        args, unknown = parser.parse_known_args()
        set_cmd_env(args.env)
        if args.parse_unknown:
            args.func(args, unknown)
        else:
            args = parser.parse_args()
            args.func(args)

    except (argparse.ArgumentTypeError, argparse.ArgumentError) as exc:
        if os.getenv("APPR_DEBUG", "false") == "true":
            raise
        else:
            parser.error(exc.message) 

def add_kwarg_parse(parser, kwarg, doc, namespace=None):
  """
  Logic to add a parser flag for a kwarg stored in a Parameter object
  Supports namespacing
  """
  if namespace is None:
    namespace = ""
  name = kwarg.name
  typ = _maybe(kwarg.annotation, str)
  default = _maybe(kwarg.default, None)
  try:
    parser.add_argument(f"--{name}", default=None, type=typ, help=doc)
  except argparse.ArgumentError:
    pass
  parser.add_argument(f"--{namespace}-{name}", default=None, type=typ, help=doc)
  return default 

def test_conflicting_option_should_throw(self):
        class MyApp(application.App):
            def __init__(self):
                super(MyApp, self).__init__(
                    description='testing',
                    version='0.1',
                    command_manager=commandmanager.CommandManager('tests'),
                )

            def build_option_parser(self, description, version):
                parser = super(MyApp, self).build_option_parser(description,
                                                                version)
                parser.add_argument(
                    '-h', '--help',
                    default=self,  # tricky
                    help="Show help message and exit.",
                )

        self.assertRaises(
            argparse.ArgumentError,
            MyApp,
        ) 

def __init__(self, option_strings, nargs=1, dest='vmnames', help=None,
                 **kwargs):
        if help is None:
            if nargs == argparse.OPTIONAL:
                help = 'at most one domain name'
            elif nargs == 1:
                help = 'a domain name'
            elif nargs == argparse.ZERO_OR_MORE:
                help = 'zero or more domain names'
            elif nargs == argparse.ONE_OR_MORE:
                help = 'one or more domain names'
            elif nargs > 1:
                help = '%s domain names' % nargs
            else:
                raise argparse.ArgumentError(
                    nargs, "Passed unexpected value {!s} as {!s} nargs ".format(
                        nargs, dest))

        super(VmNameAction, self).__init__(option_strings, dest=dest, help=help,
                                           nargs=nargs, **kwargs) 

def __init__(self, option_strings, nargs=1, dest='vmnames', help=None,
                 **kwargs):
        # pylint: disable=redefined-builtin
        if help is None:
            if nargs == argparse.OPTIONAL:
                help = 'at most one running domain'
            elif nargs == 1:
                help = 'running domain name'
            elif nargs == argparse.ZERO_OR_MORE:
                help = 'zero or more running domains'
            elif nargs == argparse.ONE_OR_MORE:
                help = 'one or more running domains'
            elif nargs > 1:
                help = '%s running domains' % nargs
            else:
                raise argparse.ArgumentError(
                    nargs, "Passed unexpected value {!s} as {!s} nargs ".format(
                        nargs, dest))
        super(RunningVmNameAction, self).__init__(
            option_strings, dest=dest, help=help, nargs=nargs, **kwargs) 

def __call__(self, parser, namespace, string, option_string):
        try:
            with open(string, 'r') as f:
                tree = etree.parse(f)
                xml = tree.getroot()
        except (OSError, IOError):
            xml = None
        except etree.XMLSyntaxError as e:
            if 'Document is empty' not in str(e):
                raise argparse.ArgumentError(self,
                                             "%s does not seem to be a valid xml file"
                                             % string)
            xml = None

        setattr(namespace, self.dest, string)
        setattr(namespace, 'xml', xml) 

def _match_argument(self, action, arg_strings_pattern) -> int:
        # match the pattern for this action to the arg strings
        nargs_pattern = self._get_nargs_pattern(action)
        match = _re.match(nargs_pattern, arg_strings_pattern)

        # raise an exception if we weren't able to find a match
        if match is None:
            if isinstance(action, _RangeAction) and \
                    action.nargs_min is not None and action.nargs_max is not None:
                raise ArgumentError(action,
                                    'Expected between {} and {} arguments'.format(action.nargs_min, action.nargs_max))

        return super(ACArgumentParser, self)._match_argument(action, arg_strings_pattern)

    # This is the official python implementation with a 5 year old patch applied
    # See the comment below describing the patch 

def __call__(self, parser, namespace, values, option_string=None):
        range = values.split(':')
        if len(range) == 0:
            # Nothing passed, return a zero default
            setattr(namespace, self.dest, (0, 0))
        elif len(range) == 1:
            # Only a single value is present
            setattr(namespace, self.dest, (int(range[0]), int(range[0])))
        elif len(range) == 2:
            # Range of two values
            if int(range[0]) <= int(range[1]):
                setattr(namespace, self.dest, (int(range[0]), int(range[1])))
            else:
                msg = "Invalid range, %s is not less than %s" % \
                    (range[0], range[1])
                raise argparse.ArgumentError(self, msg)
        else:
            # Too many values
            msg = "Invalid range, too many values"
            raise argparse.ArgumentError(self, msg) 

def __call__(self, parser, namespace, values, option_string=None):
        try:
            value = {
                '2m': '256KB',
                '4m': '512KB',
                '8m': '1MB',
                '16m': '2MB',
                '32m': '4MB',
                '16m-c1': '2MB-c1',
                '32m-c1': '4MB-c1',
            }[values[0]]
            print("WARNING: Flash size arguments in megabits like '%s' are deprecated." % (values[0]))
            print("Please use the equivalent size '%s'." % (value))
            print("Megabit arguments may be removed in a future release.")
        except KeyError:
            value = values[0]

        known_sizes = dict(ESP8266ROM.FLASH_SIZES)
        known_sizes.update(ESP32ROM.FLASH_SIZES)
        if self._auto_detect:
            known_sizes['detect'] = 'detect'
            known_sizes['keep'] = 'keep'
        if value not in known_sizes:
            raise argparse.ArgumentError(self, '%s is not a known flash size. Known sizes: %s' % (value, ", ".join(known_sizes.keys())))
        setattr(namespace, self.dest, value) 

def __call__(self, parser, namespace, value, option_string=None):
        if value.upper() == "SPI":
            value = 0
        elif value.upper() == "HSPI":
            value = 1
        elif "," in value:
            values = value.split(",")
            if len(values) != 5:
                raise argparse.ArgumentError(self, '%s is not a valid list of comma-separate pin numbers. Must be 5 numbers - CLK,Q,D,HD,CS.' % value)
            try:
                values = tuple(int(v,0) for v in values)
            except ValueError:
                raise argparse.ArgumentError(self, '%s is not a valid argument. All pins must be numeric values' % values)
            if any([v for v in values if v > 33 or v < 0]):
                raise argparse.ArgumentError(self, 'Pin numbers must be in the range 0-33.')
            # encode the pin numbers as a 32-bit integer with packed 6-bit values, the same way ESP32 ROM takes them
            # TODO: make this less ESP32 ROM specific somehow...
            clk,q,d,hd,cs = values
            value = (hd << 24) | (cs << 18) | (d << 12) | (q << 6) | clk
        else:
            raise argparse.ArgumentError(self, '%s is not a valid spi-connection value. ' +
                                         'Values are SPI, HSPI, or a sequence of 5 pin numbers CLK,Q,D,HD,CS).' % value)
        setattr(namespace, self.dest, value) 

def _parse(self, args):
        '''

        '''
        

        self.pre_parse(args)
        

        self.parser.parse_args(args[1:], self.params)
        

        try:
            self.post_parse()
        except argparse.ArgumentError, e:

            self.parser.error(str(e)) 

def add_model_subargs(self, model):
        """
        Add arguments specific to a particular model.
        """
        agent = load_agent_module(model)
        try:
            if hasattr(agent, 'add_cmdline_args'):
                agent.add_cmdline_args(self)
        except argparse.ArgumentError:
            # already added
            pass
        try:
            if hasattr(agent, 'dictionary_class'):
                s = class2str(agent.dictionary_class())
                self.set_defaults(dict_class=s)
        except argparse.ArgumentError:
            # already added
            pass 

def add_image_args(self, image_mode):
        """
        Add additional arguments for handling images.
        """
        try:
            parlai = self.add_argument_group('ParlAI Image Preprocessing Arguments')
            parlai.add_argument(
                '--image-size',
                type=int,
                default=256,
                help='resizing dimension for images',
                hidden=True,
            )
            parlai.add_argument(
                '--image-cropsize',
                type=int,
                default=224,
                help='crop dimension for images',
                hidden=True,
            )
        except argparse.ArgumentError:
            # already added
            pass 

def extant_file(x):
    if not os.path.exists(x):
        raise argparse.ArgumentError("{0} does not exist".format(x))
    return x 

def extant_file(x):
    if not os.path.exists(x):
        raise argparse.ArgumentError("{0} does not exist".format(x))
    return x 

def main():
    args = parse_arguments(sys.argv[1:])
    m2m_dir = os.path.abspath(os.path.realpath(os.path.expanduser(args.m2mpath)))
    if not os.path.isdir(m2m_dir):
        raise IOError('Could not find directory: {0}'.format(args.m2mpath))
    if args.out is not None:
        fn_out = os.path.abspath(os.path.realpath(os.path.expanduser(args.out)))
        fn_geo = os.path.splitext(fn_out)[0] + '.geo'
    else:
        fn_out = None
        fn_geo = None

    if args.coords is not None:
        coords = [float(d) for d in args.coords]

    elif args.csv is not None:
        coords = os.path.abspath(os.path.realpath(os.path.expanduser(args.csv)))
        if not os.path.isfile(coords):
            raise IOError('Could not find CSV file: {0}'.format(args.csv))
    else:
        raise argparse.ArgumentTypeError(
            'Plase use either -c or -s')

    if args.coords is not None and args.csv is not None:
        raise argparse.ArgumentError(
            'Please use only -c or -s')

    coords = transformations.warp_coordinates(
        coords, m2m_dir,
        transformation_direction='mni2subject',
        out_name=fn_out,
        transformation_type=args.t,
        out_geo=fn_geo)[1]
    if fn_out is None:
        np.set_printoptions(precision=2,
                            formatter={'float': lambda x: '{0:.2f}'.format(x)})
        print('Transformed coodinates:\n{0}'.format(coords.squeeze())) 

def main():
    args = parse_arguments(sys.argv[1:])
    m2m_dir = os.path.abspath(os.path.realpath(os.path.expanduser(args.m2mpath)))
    if not os.path.isdir(m2m_dir):
        raise IOError('Could not find directory: {0}'.format(args.m2mpath))
    if args.out is not None:
        fn_out = os.path.abspath(os.path.realpath(os.path.expanduser(args.out)))
        fn_geo = os.path.splitext(fn_out)[0] + '.geo'
    else:
        fn_out = None
        fn_geo = None

    if args.coords is not None:
        coords = np.array([float(d) for d in args.coords])

    elif args.csv is not None:
        coords = os.path.abspath(os.path.realpath(os.path.expanduser(args.csv)))
        if not os.path.isfile(coords):
            raise IOError('Could not find CSV file: {0}'.format(args.csv))
    else:
        raise argparse.ArgumentTypeError(
            'Plase use either -c or -s')

    if args.coords is not None and args.csv is not None:
        raise argparse.ArgumentError(
            'Please use only -c or -s')

    coords = transformations.warp_coordinates(
        coords, m2m_dir,
        transformation_direction='subject2mni',
        out_name=fn_out,
        transformation_type=args.t,
        out_geo=fn_geo)[1]
    if fn_out is None:
        np.set_printoptions(precision=2,
                            formatter={'float': lambda x: '{0:.2f}'.format(x)})
        print('Transformed coodinates:\n{0}'.format(coords.squeeze())) 

def parse_config(self, path: str) -> dict:
        """Loads a YAML config file, returning its dictionary format.

        Args:
            path: Path to the config file to be loaded.

        Returns:
            dict: Dictionary representation of the config file.

        """
        try:
            with Path(path).open("r") as file:
                return yaml.safe_load(file)
        except (FileNotFoundError, ParserError) as error:
            raise argparse.ArgumentError(self, error) 

def __call__(self, parser, namespace, values, option_string=None):
        raise argparse.ArgumentError(None, 'unrecognized argument: {} {}'.format(
            option_string, values or '')) 

def set_mnist_flags():
    try:
        flags.DEFINE_integer('BATCH_SIZE', 64, 'Size of training batches')
    except argparse.ArgumentError:
        pass

    flags.DEFINE_integer('NUM_CLASSES', 10, 'Number of classification classes')
    flags.DEFINE_integer('IMAGE_ROWS', 28, 'Input row dimension')
    flags.DEFINE_integer('IMAGE_COLS', 28, 'Input column dimension')
    flags.DEFINE_integer('NUM_CHANNELS', 1, 'Input depth dimension') 

def __call__(self, string):
        match = re.match(self.regex, string)
        if not match:
            raise argparse.ArgumentError(None, self.errorMsg)
        return string 

def __call__(self, parser, namespace, values, option_string=None):
        # validate pair arguments
        pairs = []
        for i in range(0,len(values),2):
            try:
                address = int(values[i],0)
            except ValueError:
                raise argparse.ArgumentError(self,'Address "%s" must be a number' % values[i])
            try:
                argfile = open(values[i + 1], 'rb')
            except IOError as e:
                raise argparse.ArgumentError(self, e)
            except IndexError:
                raise argparse.ArgumentError(self,'Must be pairs of an address and the binary filename to write there')
            pairs.append((address, argfile))

        # Sort the addresses and check for overlapping
        end = 0
        for address, argfile in sorted(pairs):
            argfile.seek(0,2)  # seek to end
            size = argfile.tell()
            argfile.seek(0)
            sector_start = address & ~(ESPLoader.FLASH_SECTOR_SIZE - 1)
            sector_end = ((address + size + ESPLoader.FLASH_SECTOR_SIZE - 1) & ~(ESPLoader.FLASH_SECTOR_SIZE - 1)) - 1
            if sector_start < end:
                message = 'Detected overlap at address: 0x%x for file: %s' % (address, argfile.name)
                raise argparse.ArgumentError(self, message)
            end = sector_end
        setattr(namespace, self.dest, pairs)


# Binary stub code (see flasher_stub dir for source & details) 

def execute(self, args: argparse.Namespace, subsystems: typing.Sequence[object]) -> int:
        import pyuavcan.application
        node, = subsystems
        assert isinstance(node, pyuavcan.application.Node)

        with contextlib.closing(node):
            node.heartbeat_publisher.priority = args.priority
            node.heartbeat_publisher.period = \
                min(pyuavcan.application.heartbeat_publisher.Heartbeat.MAX_PUBLICATION_PERIOD, args.period)

            raw_ss = args.subject_spec
            if len(raw_ss) % 2 != 0:
                raise argparse.ArgumentError('Mismatching arguments: '
                                             'each subject specifier must be matched with its field specifier.')
            publications: typing.List[Publication] = []
            for subject_spec, field_spec in (raw_ss[i:i + 2] for i in range(0, len(raw_ss), 2)):
                publications.append(Publication(subject_spec=subject_spec,
                                                field_spec=field_spec,
                                                presentation=node.presentation,
                                                priority=args.priority,
                                                send_timeout=args.period))
            _logger.info('Publication set: %r', publications)

            try:
                asyncio.get_event_loop().run_until_complete(self._run(node=node,
                                                                      count=int(args.count),
                                                                      period=float(args.period),
                                                                      publications=publications))
            except KeyboardInterrupt:
                pass

            if _logger.isEnabledFor(logging.INFO):
                _logger.info('%s', node.presentation.transport.sample_statistics())
                for s in node.presentation.transport.output_sessions:
                    ds = s.specifier.data_specifier
                    if isinstance(ds, pyuavcan.transport.MessageDataSpecifier):
                        _logger.info('Subject %d: %s', ds.subject_id, s.sample_statistics())

        return 0 

def test_conflicting_parents(self):
        self.assertRaises(
            argparse.ArgumentError,
            argparse.ArgumentParser,
            parents=[self.w_parent, self.wxyz_parent]) 

def test_conflicting_parents_mutex(self):
        self.assertRaises(
            argparse.ArgumentError,
            argparse.ArgumentParser,
            parents=[self.abcd_parent, self.ab_mutex_parent])