class_docstr: Real numbers up to the given precision. 
class_docstr_tok: ["Real","numbers","up","to","the","given","precision","."]
code: def dtype(self, arg):
      # XXX: This is needed because mpmath does not recognise fmpz.
      # It might be better to add conversion routines to mpmath and if that
      # happens then this can be removed.
      if isinstance(arg, SYMPY_INTS):
          arg = int(arg)
      return self._dtype(arg)
  
imports: from sympy.external.gmpy import SYMPY_INTS
  from sympy.core.numbers import Float
  from sympy.polys.domains.field import Field
  from sympy.polys.domains.simpledomain import SimpleDomain
  from sympy.polys.domains.characteristiczero import CharacteristicZero
  from sympy.polys.domains.mpelements import MPContext
  from sympy.polys.polyerrors import CoercionFailed
  from sympy.utilities import public
label_desc: Use image node_id 7 for calling the RealField obj's underlying member method code with example usage: obj.dtype(arg) and returns: self