IBP banding data system: Internal maintenance specification

Virtually identical to Section 13.1, “BaseSpeciesSet.lookupSpec4()”.

# - - -   B a s e S p e c i e s S e t . l o o k u p S p e c 6   - - -

    def lookupSpec6 ( self, code ):
        """Look up a 6-letter code.
        """
        return self.spec6Map [ code.upper() ]