code: def _str_digits(ctx):
      return ctx._dps
  
imports: from sympy.external.gmpy import MPQ
  from sympy.polys.domains.domainelement import DomainElement
  from sympy.utilities import public
  from mpmath.ctx_mp_python import PythonMPContext, _mpf, _mpc, _constant
  from mpmath.libmp import MPZ_ONE, fzero, fone, finf, fninf, fnan, round_nearest, mpf_mul, repr_dps, int_types, from_int, from_float, from_str, to_rational
label_desc: Use image node_id 7 for calling the MPContext obj's underlying member method code with example usage: obj._str_digits(ctx) and returns: ctx