code: def __sympy_debug():
      # helper function from sympy/__init__.py
      # We don't just import SYMPY_DEBUG from that file because we don't want to
      # import all of SymPy just to use this module.
      import os
  
      debug_str = os.getenv("SYMPY_DEBUG", "False")
      if debug_str in ("True", "False"):
          return eval(debug_str)
      else:
          raise RuntimeError(
              "unrecognized value for SYMPY_DEBUG: %s" % debug_str
          )
  
imports: import sys
  import re
label_desc: Use image node_id 1 for calling a global function with example usage: __sympy_debug() and returns: eval