Features for testing the presence of sirocco

class sage.features.sirocco.Sirocco(*args, **kwds)

Bases: BuildModule

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

EXAMPLES:

Sage

sage: from sage.features.sirocco import Sirocco
sage: Sirocco().is_present()  # needs sirocco
FeatureTestResult('sirocco', True)
sage: Sirocco().is_present()  # needs !sirocco
FeatureTestResult('sirocco', False)

Python

>>> from sage.all import *
>>> from sage.features.sirocco import Sirocco
>>> Sirocco().is_present()  # needs sirocco
FeatureTestResult('sirocco', True)
>>> Sirocco().is_present()  # needs !sirocco
FeatureTestResult('sirocco', False)

Sage Live

from sage.features.sirocco import Sirocco
Sirocco().is_present()  # needs sirocco
Sirocco().is_present()  # needs !sirocco

A runtime check. We only check the “present” case because, if feature checks are _not_ deferred, the needs !sirocco can be satisfied (disabled at build time) at the same time we are able to import a module that was installed for a previous build of sage:

Sage

sage: from sage.features.sirocco import Sirocco
sage: Sirocco().is_present_at_runtime()  # needs sirocco
FeatureTestResult('sirocco', True)

Python

>>> from sage.all import *
>>> from sage.features.sirocco import Sirocco
>>> Sirocco().is_present_at_runtime()  # needs sirocco
FeatureTestResult('sirocco', True)

Sage Live

from sage.features.sirocco import Sirocco
Sirocco().is_present_at_runtime()  # needs sirocco

sage.features.sirocco.all_features()

Make live