class_docstr: Representation for a range of values. 
class_docstr_tok: ["Representation","for","a","range","of","values","."]
docstr: Set initial bound of the range object. 
docstr_tok: ["Set","initial","bound","of","the","range","object","."]
code: def __init__(self, low, high):
      """Set initial bound of the range object."""
      if isnan(low):
          low = -float("inf")
      if isnan(high):
          high = +float("inf")
      self._low = low
      self._high = high
  
imports: from math import isinf, isnan
  import itertools
  import numpy
label_desc: Use image node_id 1 to create a new Interval object from inherited base classes: object with example: obj = Interval(low, high)