code: def append(arr, values, axis=None):
      # this code is basically copied from numpy/lib/function_base.py's append
      arr = array(arr)
      if axis is None:
          if ndim(arr) != 1:
              arr = ravel(arr)
          values = ravel(array(values))
          axis = ndim(arr) - 1
      return concatenate((arr, values), axis=axis)
  
imports: from __future__ import absolute_import
  import types
  import warnings
  from autograd.extend import primitive, notrace_primitive
  import numpy
  import autograd.builtins
  from numpy.core.einsumfunc import _parse_einsum_input
label_desc: Use image node_id 12 for calling a global function with example usage: append(arr, values, axis) and returns: concatenate