class_docstr: Generates an array with sequence of numbers.
  
  .. math::
      \mathbf x[i] = start + step * i
  
  Args:
      start (int): A start value.
      step (int): A step value.
  
  Example:
  
  .. code-block:: python
  
      import nnabla as nn
      import nnabla.initializer as I
  
      x = nn.Variable([100])
      x.d = I.RangeInitializer(0, 1)(x.shape)
code: def __init__(self, start=0, step=1):
      self.start = start
      self.step = step
  
imports: import numpy
  from .None import random
label_desc: Use image node_id 1 to create a new RangeInitializer object from inherited base classes: BaseInitializer with example: obj = RangeInitializer(start, step)