Features for testing the presence of various databases¶
- class sage.features.databases.DatabaseCremona(*args, **kwds)[source]¶
Bases:
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', type='standard').is_present() FeatureTestResult('database_cremona_mini_ellcurve', True) sage: DatabaseCremona().is_present() # optional - database_cremona_ellcurve FeatureTestResult('database_cremona_ellcurve', True)
>>> from sage.all import * >>> from sage.features.databases import DatabaseCremona >>> DatabaseCremona('cremona_mini', type='standard').is_present() FeatureTestResult('database_cremona_mini_ellcurve', True) >>> DatabaseCremona().is_present() # optional - database_cremona_ellcurve FeatureTestResult('database_cremona_ellcurve', True)
- class sage.features.databases.DatabaseCubicHecke(*args, **kwds)[source]¶
Bases:
PythonModule
A
Feature
which describes the presence of the Cubic Hecke algebra database package.The home of this database is the web-page Cubic Hecke algebra on 4 strands of Ivan Marin.
EXAMPLES:
sage: from sage.features.databases import DatabaseCubicHecke sage: DatabaseCubicHecke().is_present() # optional - database_cubic_hecke FeatureTestResult('database_cubic_hecke', True)
>>> from sage.all import * >>> from sage.features.databases import DatabaseCubicHecke >>> DatabaseCubicHecke().is_present() # optional - database_cubic_hecke FeatureTestResult('database_cubic_hecke', True)
- class sage.features.databases.DatabaseEllcurves(*args, **kwds)[source]¶
Bases:
StaticFile
A
Feature
which describes the presence of William Stein’s database of interesting curves.EXAMPLES:
sage: from sage.features.databases import DatabaseEllcurves sage: bool(DatabaseEllcurves().is_present()) # optional - database_ellcurves True
>>> from sage.all import * >>> from sage.features.databases import DatabaseEllcurves >>> bool(DatabaseEllcurves().is_present()) # optional - database_ellcurves True
- class sage.features.databases.DatabaseGraphs(*args, **kwds)[source]¶
Bases:
StaticFile
A
Feature
which describes the presence of the graphs database.EXAMPLES:
sage: from sage.features.databases import DatabaseGraphs sage: bool(DatabaseGraphs().is_present()) # optional - database_graphs True
>>> from sage.all import * >>> from sage.features.databases import DatabaseGraphs >>> bool(DatabaseGraphs().is_present()) # optional - database_graphs True
- class sage.features.databases.DatabaseJones(*args, **kwds)[source]¶
Bases:
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
>>> from sage.all import * >>> from sage.features.databases import DatabaseJones >>> bool(DatabaseJones().is_present()) # optional - database_jones_numfield True
- class sage.features.databases.DatabaseKnotInfo(*args, **kwds)[source]¶
Bases:
PythonModule
A
Feature
which describes the presence of the package providing the KnotInfo and LinkInfo databases.The homes of these databases are 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)
>>> from sage.all import * >>> from sage.features.databases import DatabaseKnotInfo >>> DatabaseKnotInfo().is_present() # optional - database_knotinfo FeatureTestResult('database_knotinfo', True)
- class sage.features.databases.DatabaseMatroids(*args, **kwds)[source]¶
Bases:
PythonModule
A
Feature
which describes the presence of Yoshitake Matsumoto’s Database of Matroids.EXAMPLES:
sage: from sage.features.databases import DatabaseMatroids sage: DatabaseMatroids().is_present() # optional - matroid_database FeatureTestResult('matroid_database', True)
>>> from sage.all import * >>> from sage.features.databases import DatabaseMatroids >>> DatabaseMatroids().is_present() # optional - matroid_database FeatureTestResult('matroid_database', True)
REFERENCES:
- class sage.features.databases.DatabaseReflexivePolytopes(*args, **kwds)[source]¶
Bases:
StaticFile
A
Feature
which describes the presence of the PALP databases of reflexive three-dimensional and four-dimensional 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').is_present()) # optional - polytopes_db_4d True
>>> from sage.all import * >>> from sage.features.databases import DatabaseReflexivePolytopes >>> bool(DatabaseReflexivePolytopes().is_present()) # optional - polytopes_db True >>> bool(DatabaseReflexivePolytopes('polytopes_db_4d').is_present()) # optional - polytopes_db_4d True
- sage.features.databases.sage_data_path(data_name)[source]¶
Search path for database \(data_name\).
EXAMPLES:
sage: from sage.features.databases import sage_data_path sage: sage_data_path("cremona") ['.../cremona']
>>> from sage.all import * >>> from sage.features.databases import sage_data_path >>> sage_data_path("cremona") ['.../cremona']