Testing for databases at runtime¶
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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.EXAMPLES:
sage: from sage.features.databases import DatabaseCremona sage: DatabaseCremona().is_present() # optional: database_cremona_ellcurve FeatureTestResult("Cremona's database of elliptic curves", True)
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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