def __call__(self, parser, namespace, flag, unused_option_string=None):
"""Sets the `self.dest` attribute in `namespace` to the parsed value of `flag`.
If `flag` parses to a boolean True value then the attribute value is 'download'.
If `flag` parses to a boolean False value then the attribute value is ``None``.
Otherwise the attribute value is the value of `flag`.
Args:
parser (str): Argument parser object this group belongs to.
namespace (object): Namespace to receive parsed value via setattr.
flag (str): Value parsed from the command line.
"""
try:
flag_as_bool = util.parse_bool(flag, additional_true=['download'])
except TypeError:
if util.is_url(flag):
value = flag
else:
value = os.path.abspath(os.path.expanduser(flag))
if not (os.path.isdir(value) or util.file_accessible(value)):
raise argparse.ArgumentError(self, "Boolean, 'download', valid path, or URL required: %s" % value)
else:
if flag_as_bool == True:
value = 'download'
elif flag_as_bool == False:
value = None
setattr(namespace, self.dest, value)
def __call__(self, parser, namespace, flag, unused_option_string=None):
"""Sets the `self.dest` attribute in `namespace` to the parsed value of `flag`.
If `flag` parses to a boolean via :any:`tau.util.parse_bool` then the
attribute value is that boolean value.
Args:
parser (str): Argument parser object this group belongs to.
namespace (object): Namespace to receive parsed value via setattr.
flag (str): Value parsed from the command line/
"""
try:
setattr(namespace, self.dest, util.parse_bool(flag))
except TypeError:
raise argparse.ArgumentError(self, 'Boolean value required')
