Features for testing the presence of various databases¶
- class sage.features.databases.DatabaseConwayPolynomials¶
Bases:
sage.features.StaticFile
A
Feature
which describes the presence of Frank Luebeck’s database of Conway polynomials.EXAMPLES:
sage: from sage.features.databases import DatabaseConwayPolynomials sage: DatabaseConwayPolynomials().is_present() FeatureTestResult('conway_polynomials', True)
- class sage.features.databases.DatabaseCremona(name='cremona', spkg='database_cremona_ellcurve')¶
Bases:
sage.features.StaticFile
A
Feature
which describes the presence of John Cremona’s database of elliptic curves.INPUT:
name
– either'cremona'
(the default) for the full large database or'cremona_mini'
for the small database.
EXAMPLES:
sage: from sage.features.databases import DatabaseCremona sage: DatabaseCremona('cremona_mini').is_present() FeatureTestResult('database_cremona_mini_ellcurve', True) sage: DatabaseCremona().is_present() # optional - database_cremona_ellcurve FeatureTestResult('database_cremona_ellcurve', True)
- class sage.features.databases.DatabaseJones¶
Bases:
sage.features.StaticFile
A
Feature
which describes the presence of John Jones’s tables of number fields.EXAMPLES:
sage: from sage.features.databases import DatabaseJones sage: bool(DatabaseJones().is_present()) # optional - database_jones_numfield True
- class sage.features.databases.DatabaseKnotInfo¶
Bases:
sage.features.PythonModule
A
Feature
which describes the presence of the databases at the web-pages KnotInfo and LinkInfo.EXAMPLES:
sage: from sage.features.databases import DatabaseKnotInfo sage: DatabaseKnotInfo().is_present() # optional - database_knotinfo FeatureTestResult('database_knotinfo', True)
- class sage.features.databases.DatabaseReflexivePolytopes(name='polytopes_db', dirname='Full3D')¶
Bases:
sage.features.StaticFile
A
Feature
which describes the presence of the PALP database of reflexive lattice polytopes.EXAMPLES:
sage: from sage.features.databases import DatabaseReflexivePolytopes sage: bool(DatabaseReflexivePolytopes().is_present()) # optional - polytopes_db True sage: bool(DatabaseReflexivePolytopes('polytopes_db_4d', 'Hodge4d').is_present()) # optional - polytopes_db_4d True
- sage.features.databases.all_features()¶