code: def check_no_repeated_axes(axes):
      axes_set = set(axes)
      if len(axes) != len(axes_set):
          raise NotImplementedError(
              "FFT gradient for repeated axes not implemented."
          )
  
file_path: autograd/autograd/numpy/fft.py
imports: from __future__ import absolute_import
  from builtins import zip
  import numpy.fft
  from .numpy_wrapper import wrap_namespace
  from .numpy_vjps import match_complex
  from .None import numpy_wrapper
  from autograd.extend import primitive, defvjp, vspace
label_desc: Use image node_id 5 for calling a global function with example usage: check_no_repeated_axes(axes) without return types