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import collections
Spec = collections.namedtuple('Spec', 'types required item_scheme')
def expand(**kwargs):
def expand_spec(spec):
if not isinstance(spec, Spec):
types_ = spec if isinstance(spec, tuple) else (spec,)
spec = Spec(types=types_, required=False, item_scheme=None)
elif not isinstance(spec.types, tuple):
spec = Spec(types=(spec.types,), required=spec.required,
item_scheme=spec.item_scheme)
return spec
return {key: expand_spec(value) for key, value in kwargs.items()}
class Message(collections.namedtuple('Message', 'path type message')):
fmt = '{path}: {type}: {message}'
def __str__(self):
return self.fmt.format(**self._asdict())
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