parse_ucd, check_controlled_vocabulary=False, has_colon=False)[source]

Parse the UCD into its component parts.

ucd : str

The UCD string

check_controlled_vocabulary : bool, optional

If True, then each word in the UCD will be verified against the UCD1+ controlled vocabulary, (as required by the VOTable specification version 1.2), otherwise not.

has_colon : bool, optional

If True, the UCD may contain a colon (as defined in earlier versions of the standard).

parts : list

The result is a list of tuples of the form:

(namespace, word)

If no namespace was explicitly specified, namespace will be returned as 'ivoa' (i.e., the default namespace).

ValueError : ucd is invalid