code: def debugf(string, args):
      """
      Print ``string%args`` if SYMPY_DEBUG is True, else do nothing. This is
      intended for debug messages using formatted strings.
      """
      from sympy import SYMPY_DEBUG
  
      if SYMPY_DEBUG:
          print(string % args, file=sys.stderr)
  
imports: from __future__ import annotations
  import operator
  import sys
  import os
  import re
  import struct
  from textwrap import fill, dedent
label_desc: Use image node_id 6 for calling a global function with example usage: debugf(string, args) without return types