Features for testing the presence of fes

class sage.features.fes.LibFES

Bases: sage.features.join_feature.JoinFeature

A Feature which describes whether the sage.libs.fes module has been enabled for this build of Sage and is functional.

EXAMPLES:

sage: from sage.features.fes import LibFES
sage: LibFES().require()  # optional - fes
class sage.features.fes.LibFESLibrary

Bases: sage.features.CythonFeature

A Feature which describes whether the FES library is present and functional.

EXAMPLES:

sage: from sage.features.fes import LibFESLibrary
sage: LibFESLibrary().require()  # optional - fes