Features for testing the presence of bliss

class sage.features.bliss.Bliss(*args, **kwds)[source]

Bases: BuildFeature

A Feature which describes whether the sage.graphs.bliss module is available in this installation of Sage.

EXAMPLES:

sage: from sage.features.bliss import Bliss
sage: Bliss().require()  # needs bliss
is_present_at_runtime()[source]
sage.features.bliss.all_features()[source]