code: def _set_new_attribute(cls, name, value):
      # Never overwrites an existing attribute.  Returns True if the
      # attribute already exists.
      if name in cls.__dict__:
          return True
      setattr(cls, name, value)
      return False
  
imports: import re
  import sys
  import copy
  import types
  import inspect
  import keyword
label_desc: Use image node_id 16 for calling a global function with example usage: _set_new_attribute(cls, name, value) and returns: False, True