code: def sub(pattern, repl, string, count=0, flags=0):
      """Return the string obtained by replacing the leftmost
      non-overlapping occurrences of the pattern in string by the
      replacement repl.  repl can be either a string or a callable;
      if a string, backslash escapes in it are processed.  If it is
      a callable, it's passed the Match object and must return
      a replacement string to be used."""
      return _compile(pattern, flags).sub(repl, string, count)
  
imports: import enum
  from .None import _compiler, _parser
  import functools
  import copyreg
label_desc: Use image node_id 4 for calling a global function with example usage: sub(pattern, repl, string, count, flags) and returns: _compile