Abstract base class for commutative rings

sage.rings.commutative_ring.is_CommutativeRing(R)

Check to see if R is a CommutativeRing.

EXAMPLES:

sage: import sage.rings.commutative_ring
doctest:...: DeprecationWarning: the module sage.rings.commutative_ring is deprecated and will be removed
See http://trac.sagemath.org/20011 for details.
sage: sage.rings.commutative_ring.is_CommutativeRing(ZZ)
True