def new_inst(cls, label):
"""
Construct a new instance of the type and with parameters associated with
the given label.
:param label: the configuration label
:type label: str
:raises KeyError: The given label does not exist in the system
configuration
:return: New instance of type and parameters associated with the given
label.
:rtype: smqtk.content_description.ContentDescriptor
"""
label_sect = cls.get_config_sect()[label]
cd_cls = get_descriptors()[label_sect['type']]
return cd_cls(**label_sect['init'])
def test_get_descriptors():
m = get_descriptors()
ntools.assert_is_instance(m, dict, "Should return a dictionary of class "
"label-to-types")
