code: def flipud(a):
      """Flip array in the up/down direction.
  
      Args:
          a (:class:`~chainer.Variable` or :ref:`ndarray`): Input variable.
  
      Returns:
          ~chainer.Variable: Output variable.
  
      """
      return FlipUD().apply((a,))[0]
  
file_path: chainer/chainer/functions/array/flipud.py
imports: from chainer import backend
  from chainer import function_node
  from chainer.utils import type_check
label_desc: Use image node_id 1 for calling a global function with example usage: flipud(a) and returns: FlipUD