class_docstr: Roll axis of an array.
class_docstr_tok: ["Roll","axis","of","an","array","."]
code: def __init__(self, axis, start):
      if not isinstance(axis, six.integer_types):
          raise TypeError("axis must be int")
      if not isinstance(start, six.integer_types):
          raise TypeError("start must be int")
  
      self.axis = axis
      self.start = start
  
file_path: chainer/chainer/functions/array/rollaxis.py
imports: import six
  from chainer import backend
  from chainer import function_node
  from chainer.utils import type_check
label_desc: Use image node_id 1 to create a new Rollaxis object from inherited base classes: function_node with example: obj = Rollaxis(axis, start)