code: def stack(tup, axis=0, out=None, *, dtype=None, casting="same_kind"):
      """Stacks arrays along a new axis.
  
      Args:
          tup (sequence of arrays): Arrays to be stacked.
          axis (int): Axis along which the arrays are stacked.
          out (cupy.ndarray): Output array.
          dtype (str or dtype): If provided, the destination array will have this
              dtype. Cannot be provided together with ``out``.
          casting ({‘no’, ‘equiv’, ‘safe’, ‘same_kind’, ‘unsafe’}, optional):
              Controls what kind of data casting may occur. Defaults to
              ``'same_kind'``.
  
      Returns:
          cupy.ndarray: Stacked array.
  
      .. seealso:: :func:`numpy.stack`
      """
      return concatenate(
          [cupy.expand_dims(x, axis) for x in tup],
          axis,
          out,
          dtype=dtype,
          casting=casting,
      )
  
imports: import cupy
  from cupy import _core
label_desc: Use image node_id 6 for calling a global function with example usage: stack(tup, axis, out) and returns: concatenate