class_docstr: Rational field based on GMPY's ``mpq`` type.
  
  This will be the implementation of :ref:`QQ` if ``gmpy`` or ``gmpy2`` is
  installed. Elements will be of type ``gmpy.mpq``.
code: def __init__(self):
      pass
  
imports: from sympy.polys.domains.groundtypes import GMPYRational, SymPyRational, gmpy_numer, gmpy_denom, factorial
  from sympy.polys.domains.rationalfield import RationalField
  from sympy.polys.polyerrors import CoercionFailed
  from sympy.utilities import public
label_desc: Use image node_id 1 to create a new GMPYRationalField object from inherited base classes: RationalField with example: obj = GMPYRationalField()