code: def atleast_2d(*arys):
      """Converts arrays to arrays with dimensions >= 2.
  
      If an input array has dimensions less than two, then this function inserts
      new axes at the head of dimensions to make it have two dimensions.
  
      Args:
          arys (tuple of arrays): Arrays to be converted. All arguments must be
              :class:`cupy.ndarray` objects.
  
      Returns:
          If there are only one input, then it returns its converted version.
          Otherwise, it returns a list of converted arrays.
  
      .. seealso:: :func:`numpy.atleast_2d`
  
      """
      return _atleast_nd_helper(2, arys)
  
file_path: cupy/cupy/_manipulation/dims.py
imports: import cupy
  from cupy import _core
  import cupy._core._routines_manipulation
label_desc: Use image node_id 3 for calling a global function with example usage: atleast_2d() and returns: _atleast_nd_helper