code: def has_arg_scope(func):
      """Checks whether a func has been decorated with @add_arg_scope or not.
  
      Args:
        func: function to check.
  
      Returns:
        a boolean.
      """
      return arg_scope_func_key(func) in _DECORATED_OPS
  
file_path: tflearn/tflearn/vendor/arg_scope.py
imports: from __future__ import absolute_import
  from __future__ import division
  from __future__ import print_function
  from tensorflow.python.util import tf_contextlib
  from tensorflow.python.util import tf_decorator
label_desc: Use image node_id 9 for calling a global function with example usage: has_arg_scope(func) and returns: unknown