code: def _subexpr(self, expr, dummies_dict):
      from sympy.matrices import DeferredVector
      from sympy.core.sympify import sympify
  
      expr = sympify(expr)
      xreplace = getattr(expr, "xreplace", None)
      if xreplace is not None:
          expr = xreplace(dummies_dict)
      else:
          if isinstance(expr, DeferredVector):
              pass
          elif isinstance(expr, dict):
              k = [
                  self._subexpr(sympify(a), dummies_dict)
                  for a in expr.keys()
              ]
              v = [
                  self._subexpr(sympify(a), dummies_dict)
                  for a in expr.values()
              ]
              expr = dict(zip(k, v))
          elif isinstance(expr, tuple):
              expr = tuple(
                  self._subexpr(sympify(a), dummies_dict) for a in expr
              )
          elif isinstance(expr, list):
              expr = [
                  self._subexpr(sympify(a), dummies_dict) for a in expr
              ]
      return expr
  
imports: from __future__ import annotations
  from typing import Any
  import builtins
  import inspect
  import keyword
  import textwrap
  import linecache
  from sympy.external import import_module
  from sympy.utilities.exceptions import sympy_deprecation_warning
  from sympy.utilities.decorator import doctest_depends_on
  from sympy.utilities.iterables import is_sequence, iterable, NotIterable, flatten
  from sympy.utilities.misc import filldedent
label_desc: Use image node_id 5 for calling the _EvaluatorPrinter obj's underlying member method code with example usage: obj._subexpr(expr, dummies_dict) and returns: expr