code: def index_update(self, tensor, indices, values):
      if not isinstance(tensor, tf.Variable):
          tensor = tf.Variable(tensor)
          to_tensor = True
      else:
          to_tensor = False
  
      if isinstance(values, int):
          values = tf.constant(
              np.ones(self.shape(tensor[indices])) * values,
              **self.context(tensor),
          )
  
      tensor = tensor[indices].assign(values)
  
      if to_tensor:
          return tf.convert_to_tensor(tensor)
      else:
          return tensor
  
file_path: tensorly/tensorly/backend/tensorflow_backend.py
imports: import numpy
  from .core import Backend, backend_types, backend_basic_math, backend_array
label_desc: Use image node_id 11 for calling the TensorflowBackend obj's underlying member method code with example usage: obj.index_update(tensor, indices, values) and returns: tf, tensor