code: def _print_dict(self, expr):
      sep = ", "
      dict_kvs = [
          "%s: %s" % (self.doprint(key), self.doprint(value))
          for key, value in expr.items()
      ]
      return "{%s}" % sep.join(dict_kvs)
  
imports: from __future__ import annotations
  from typing import Any
  from sympy.core.function import AppliedUndef
  from sympy.core.mul import Mul
  from mpmath.libmp import repr_dps, to_str
  from .printer import Printer, print_function
label_desc: Use image node_id 24 for calling the ReprPrinter obj's underlying member method code with example usage: obj._print_dict(expr) and returns: unknown